Advanced insulation material ceramic fiber blanket that used for industrial furnace

Advanced insulation material ceramic fiber blanket that used for industrial furnace

Ceramic fiber blanket, also known as aluminum silicate fiber blanket. Because one of the main components is alumina, and alumina is the main component of ceramic, so it is called ceramic fiber blanket. Ceramic fiber blanket is made by special aluminum silicate ceramic fiber filament with a special double-sided acupuncture process. Double-sided acupuncture process greatly improved the degree of fiber interwoven, tensile strength and surface roughness. Fiber blanket does not contain any organic binder, that is to make sure the ceramic fiber blanket have good stability at high temperature or low temperature.

Ceramic fiber blanket, with white color, regular size, does not contain any binding agent, and the refractory temperature is 950-1400 Degrees Celsius. It has low thermal conductivity, low heat capacity, excellent chemical stability, thermal shock resistance, tensile strength, and sound absorption. In neutral, oxidizing atmosphere, ceramic fiber blanket still could maintain good tensile strength, toughness and refractory fiber board structure after long-term use, is an excellent Insulating material.

Ceramic fiber blanket can be used in aerospace, steel, petrochemical high temperature insulation; military equipment fire insulation; industrial kiln, heating device wall lining insulation; high temperature equipment insulation; high temperature pipe insulation; electrical components thermal resistance; raw material of gasket; module, folding block.

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High Temperature Refractory for Furnace - Ceramic Fiber Paper

product manual:

With ceramic fiber as the main raw material, made by wet forming process, with high temperature resistance, chemical corrosion, thermal shock, low thermal conductivity, high electrical Insulating Bricks strength and high elastic modulus and other properties. It is characterized by no asbestos, fiber length, less slag balls, small bulk density, good elasticity, Easy to punching, winding and other construction operations. It is suitable for high temperature insulation, heat insulation, sealing, electric insulation, sound absorption and filtering fiber distribution, color white, no delamination, less slag ball (four centrifugal slag), bulk density according to the use of flexible adjustment, increase Strong fiber), mechanical processing and strong, can replace asbestos products, is a high-grade lightweight refractories. Non-brittle material, good toughness, high compressive strength, good flatness, size regularity, excellent mechanical properties and easy construction of any shear bending. Is the kiln And other thermal equipment wall lining, the ideal backing material.

Ceramic Fiber Paper Application:

Industrial kiln wall lining, masonry insulation layer High temperature ceramic kiln kiln lining, kiln car, furnace door baffle, kiln furnace temperature partition board high temperature high heat equipment thermal insulation Aerospace, shipbuilding industry insulation, fire protection, Insulation, insulation - Technical features: low thermal conductivity, low heat capacity, excellent Thermal stability and thermal shock resistance high compressive strength, and has good toughness!

⊙ Typical Applications:

● a variety of industrial furnaces and ladle, casting barrels, immersion nozzle of the high-temperature insulation materials;
● electric insulation and insulation materials for industrial furnaces;
● door and furnace expansion joint sealing material;
● cast aluminum model lining;
● stripping of glass-ceramic and hot-melt (curved) glass;
● high temperature gasket materials;
● muffler insulation muffler materials, exhaust pipe insulation materials, anti-sintering isolation materials.

Refractory company Henan Xinmi Changxing Refractory Material Co., Ltd. Located in Henan Province,China.ChangXing's product portfolio covers shaped products such as refractory materials,refractory brick, refractory castable,refractory nozzle, ceramic fiber, slide gate, etc; unshaped products including repair, construction and casting mixes and mortars.exported to more than 20 countries, such as Thailand, Indonesia, Pakistan, Saudi Arabia, South Africa, Turkey, Iran, Iraq and so on.

The Development of Fused Cast refractories

In 1927, Corhart was founded. It is a refractory company producing fused cast refractories. Raw materials are melted in an electric arc furnace and then casted in a mold, just like metal casting. The lining of the electric arc furnace is made of the same materials. The temperature is up to the requirements of refractory products, generally 1800-2500℃.

The first fused cast refractory is fused cast mullite refractory. It has been widely used in the sidewall of glass furnaces. Later zircon is added to the raw materials. The melting temperature is reduced and the slag resistance of the products is improved.

In 1952, fused cast magnesia carbon bricks manufacturers, a new fused cast product, was developed by Corhart. It is mainly used in the steel industry.

When producing fused cast refractories, the melt is casted into a mold with a large cap. The wall of the mold is made of refractory materials. When casting is finished, the mold wall is removed. Then the mold is put into insulation materials to reduce thermal shock to obtain crystals with uniform sizes and minimum gaps.

Fused cast refractory is larger than the standard bricks, so it is difficult to cast. Currently, fused cast products for sale are always cut from big blocks.

Henan Xinmi Changxing Refractory Material Co., Ltd. Located in Henan Province,China.ChangXing's product portfolio covers shaped products such as refractory materials,refractory brick,high insulating brick , refractory castable,refractory nozzle, ceramic fiber, slide gate, etc; unshaped products including repair, construction and casting mixes and mortars.exported to more than 20 countries, such as Thailand, Indonesia, Pakistan, Saudi Arabia, South Africa, Turkey, Iran, Iraq and so on.

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Refractory Application in the Walls of Glass Furnace Regenerators

Good abrasion resistance, good thermal shock stability, high temperature strength, good erosion resistance.

Application

It is widely used in Blast furnace tuyere, the circumference of the tube outlet, mixed air entrance, flue gas pipeline, turning tube etc..

Chemical corrosion is not as strong as in the checkers because refractory brick for sale are protected by the masonry and only one side is exposed to the chemical attack. Load is higher than on the overhung zones, but temperature is lower. Periclase based refractories, mullite and sillimanite bricks are suitable for this application.
Characteristics of this area are: high load, low temperature and a reduced chemical attack. Basic materials with 90-92 percent MgO, mullite, sillimanite and 44 per cent Al2O3 “super duty” are suitable for this application.
The internal separation walls are insulating castable fully immersed in the high temperature environment and therefore the operating conditions are severe. They must resist loading at high temperature, and thus they must have high values of refractoriness under load and therefore high creep resistance.
Basic materials are suitable within the temperature limits indicated in the top zone (1,460-1,480°C), while different grades of mullite according to the different zones of the separation wall can be used.

In the glass furnace, walls of the regenerators are used to limit thermal losses. The main operating factors to be considered are temperature, repeated temperature cycling, airborne particulates, volatiles and load. Fuel and glass composition must also be considered when deriving the refractory specifications.
The walls in four zones as with checkers are subjected to different conditions:
1) Top zone: from the crown skewbacks to one meter under first row of checkers;
2) Mid zone: from the end of the top zone to 1,000°C;
3) Condensation zone: from 1,000°C to 700°C;
4) Lower zone: from 700°C to the Bottom.
The operating conditions are the same as for the crown but with minor load. Low iron basic refractories with a high periclase content and high grade mullite (95-97 percent mullite) are suitable for this area. As far as basic refractories are concerned the operating temperature must be under 1,500°C (1,460-1,480°C) to avoid creep.
Provided the target wall is exposed to the same conditions as the other top zone walls, then the refractory material will be as for the rest of the top zone. However, in the event the target wall is subject to excessive waste gas impingement then fused cast AZS block is recommended.
Checkers protect the mid zone wall. Temperature and load are lower compared to the top area, thus basic ladle refractory refractories with 95 per cent MgO or a good mullite are suitable for this area.

refractory company Henan Xinmi Changxing Refractory Material Co., Ltd. Located in Henan Province,China.ChangXing's product portfolio covers shaped products such as refractory materials,refractory brick, refractory castable,refractory nozzle, ceramic fiber, slide gate, etc; unshaped products including repair, construction and casting mixes and mortars.exported to more than 20 countries, such as Thailand, Indonesia, Pakistan, Saudi Arabia, South Africa, Turkey, Iran, Iraq and so on.

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The Economy of Fused Cast Bricks in Glass Furnaces

Al2O3-SiC-C brick, with corundum, bauxite, silicon carbide and graphite as raw materials, phonetic resin as binder, added with expansive agent and modifying agent, is characterized by good thermal shock resistance, good erosion resistance, and non-sticking slag. It is used for torpedo car and hot metal ladle, and can meet request of customers.

The limit temperature of silica brick crown is 1600℃, while the fused cast AZS block can be used refractories safely in the 1680℃. AZS also has excellent corrosion resistance to fly ash and vapor firebrick refractory sale of volatile components. Therefore, the temperature of the furnace can be increased to 100℃. Ina addition, there is a low risk of burning of materials. The crown is low, which increases the heat radiation and improve the melting rate and reduce the energy consumption.
Since 1965, the fused cast AZS crown high insulating brick has been used. The crown was initially built with common silica brick, mainly used in the glass fiber and borosilicate glass melting furnace. The fused cast AZS crown as well as the insulation method began to be actually used and its application was even expanded to large soda lime glass melting furnaces. In 1974, the structure was used in large cross-fired furnaces with a span of 11m. Besides, it is also used in the container glass furnace in castable refractory material France and can reduce 130 liters heavy oil per ton.

Fused cast AZS block has been used in the checker work of the regenerator and the crown in the glass furnace.
Fused cast AZS block has excellent resistance to the erosion by fly ash to the checker brick in the regenerator, which is confirmed by its application in the burner. Fused cast AZS is durable refractory fiber board than other bricks even it is only used in the upper layer of the checker work.
The performance of fused cast AZS block in the crown has been confirmed in the furnace with a small span. It shows excellent resistance. The new fused cast AZS crown structure as well as the insulation method developed by R.E.R from France has been used in the glass furnaces with a span of 11m and large furnaces. It is characterized by the use of light and firm magnetic structure and complete insulation with a 500mm insulation layer.


Henan Xinmi Changxing Refractory Material Co., Ltd. Located in Henan Province,China.ChangXing's product portfolio covers shaped products such as refractory materials,refractory brick, refractory castable,refractory nozzle, ceramic fiber, slide gate, etc; unshaped products including repair, construction and casting mixes and mortars.exported to more than 20 countries, such as Thailand, Indonesia, Pakistan, Saudi Arabia, South Africa, Turkey, Iran, Iraq and so on.

The Matrix Of Refractory Materials

Bottom Frame &Skid Platform Brick for Heating Furnace

The matrix of firebrick refractory refers to the substances present in the gaps of large crystals or aggregates.

Matrix has a decisive impact insulating castable on the properties of refractory products. During the use, the samage of refractories always starts from the matrix. Changing the matrix of refractories is an effective way to improve the properties of products.

Most refractory materials, refractory material according to the main crystal phase and matrix, can be divided into two types: refractories containing crystal phases and glass phase and refractories only containing crystals. The former includes fireclay brick, alumina brick silica brick, etc.. The latter includes magnesia brick, magnesia chrome brick, etc..

These products are fired at high temperature and contain a certain amount of liquid phase. refractory brick The liquid will not form glass phase when cooled but the crystalline matrix which is bonded together with the main crystal phase. The matrix crystal phases are different from the main crystal phase.

Henan Xinmi Changxing Refractory Material Co., Ltd. Located in Henan Province,China.ChangXing's product portfolio covers shaped products such as refractory materials,refractory brick, refractory castable,refractory nozzle, ceramic fiber, slide gate, etc; unshaped products including repair, construction and casting mixes and mortars.exported to more than 20 countries, such as Thailand, Indonesia, Pakistan, Saudi Arabia, South Africa, Turkey, Iran, Iraq and so on.

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What is Magnesium Silicate Insulation Board

The shell temperature of test ladle that takes Magnesium Silicon Thermal Insulation Board as liner is insulating castable much lower than that of common ladle, which averagely reduces 75℃, while the maximum temperature reduction will be about 120℃. Therefore, the board application will facilitate to eliminate the deformation of ladle refractory brick shell materials, and greatly improve operation environment of ladle. The temperature drop rate of molten steel is smaller than that of common ladle, namely average 0.3~0.5℃/min. It indicates that the heat preservation of molten steel is quite great, which can not only save energy and heat losses, but also is beneficial for the constant temperature and rate during steel casting process to ensure the smooth continuous casting.

Magnesium Silicate Insulation refractory brick for sale Board is mainly used for metallurgy, building materials, furnace heat preservation, fireproof materials, etc. compared to other insulation materials, it is easy to install and cut and has no pollution to the environment, no irritation to skin and no loss during the construction.


Magnesium Silicate Insulation ladle refractory Board is a new lightweight insulation material with low thermal conductivity, good insulation properties and heat resistance.

The Magnesium Silicate Insulation board is made of sepiolite matrix material (mainly magnesium silicate) by pulping, molding, forming and drying. Within the operating temperature range, it can be used for a long term without aging and deterioration. It is non-toxic and odorless.

The Magnesium Silicate Insulation board features with high structural strength, low deformation after sintering, fine heat-conducting property and damp-proof. Especially its physical performance is quite stable under high-temperature operation. The application of this board can promote the volume stability of the whole liner, reduce furnace surface temperature, eliminate operating force among bricks, so as to ensure furnace’s safety performance and effectively save the energy.


Henan Xinmi Changxing Refractory Material Co., Ltd. Located in Henan Province,China.ChangXing's product portfolio covers shaped products such as refractory materials,refractories brick, refractory castable,refractory nozzle, ceramic fiber, slide gate, etc; unshaped products including repair, construction and casting mixes and mortars.exported to more than 20 countries, such as Thailand, Indonesia, Pakistan, Saudi Arabia, South Africa, Turkey, Iran, Iraq and so on.


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Application of monolithic refractories on industrial furnaces

This product enjoys performances of purifying liquid steel, prevent liquid steel oxidation, with good liquid steel washing resistance and erosion resistance.

Unshaped refractory material is a supporting material for building furnace, which can be divided into two categories: ramming material and casting material. They are widely applied on industrial furnace, mainly used in the furnace bottom portion, inconvenient construction part and masonry part of cooling element.

There are varieties of monolithic refractories, but the specific application on the flash furnace can be divided into four broad categories according to the chemical composition, such as magnesium chrome material, magnesium material, high alumina and clay. Structure of Flash Furnace is more complex, which need moremonolithic refractories, the selection of material is based on using position, such as magnesium chromium castables is used on H-beam part, the connecting part can be built with magnesium chromium castable, magnesia castable or high purity alumina castable; in general part of the furnace, the magnesium chrome castables or magnesia castables are available according to the wall structure, in these areas, it requires better mobility. At the bottom of the furnace, magnesium chromium ramming mass is available to be used under the magnesium-chrome brick layer, clay ramming mass is to be used under clay bricks layer.

Article resourse:

Application of monolithic refractories on industrial furnaces

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Introduction of Changxing Refractory self-flow castable

The Economy of Fused Cast Bricks in Glass Furnaces

Low carbon magnesia carbon brick using with crystal magnesite, fused corundum, fused spinel, high purity and ultrafine graphite and nano composite antioxidant as raw materials, which are used for ladle slag line. Low carbon and carbon-free corundum spinel bricks are used for ladle lining and bottom.

The performance of fused cast refractory material AZS block in the crown has been confirmed in the furnace with a small span. It shows excellent resistance. The new fused cast AZS crown structure as well as the insulation method developed by R.E.R from France has been used in the glass furnaces with a span of 11m and large furnaces. It is characterized by the use of light and firm magnetic structure and complete insulation with a 500mm insulation layer.

The limit temperature of silica brick crown is 1600℃, while the fused cast AZS block can be used safely in the 1680℃. AZS also has excellent corrosion resistance to fly ash and vapor of volatile components. Therefore, the temperature of the furnace can alumina brick be increased to 100℃. Ina addition, there is a low risk of burning of materials. The crown is low, which increases the heat radiation and improve the melting rate and reduce the energy consumption.

Fused cast AZS block has been used in the checker work of the regenerator and the crown in the glass furnace.

Fused cast AZS block has excellent insulating castable resistance to the erosion by fly ash to the checker brick in the regenerator, which is confirmed by its application in the burner. Fused cast AZS is durable than other bricks even it is only used in the upper layer of the checker work.

Since 1965, the fused cast AZS refractory fiber board crown has been used. The crown was initially built with common silica brick, mainly used in the glass fiber and borosilicate glass melting furnace. The fused cast AZS crown as well as the insulation method began to be actually used and its application was even expanded to large soda lime glass melting furnaces. In 1974, the structure was used in large cross-fired furnaces with a span of 11m. Besides, it is also used in the container glass furnace in refractory brick France and can reduce 130 liters heavy oil per ton.

Henan Xinmi Changxing Refractory Material Co., Ltd. Located in Henan Province,China.ChangXing's product portfolio covers shaped products such as refractory materials,refractory brick, refractory castable,refractory nozzle, ceramic fiber, slide gate, etc; unshaped products including repair, construction and casting mixes and mortars.exported to more than 20 countries, such as Thailand, Indonesia, Pakistan, Saudi Arabia, South Africa, Turkey, Iran, Iraq and so on.

Related Article:
Advantages of Building Ladle with Magnesia Carbon Brick

The advantages of Changxing lightweight insulation brick

Light Weight Mullite Insulation Brick can be widely used as lining or insulation layers of various industrial furnaces and kilns in metallurgical industry, machine building industry, ceramic industry, chemical industry.

These products can directly contact with fire, characterized with high temperature resistance, lightweight, low thermal conductivity and good energy saving effect. nozzle refractory Compared to the traditional "galvanized plate+ insulation cotton" duct, Changxing lightweight insulation brick has the following advantages.
Changxing lightweight insulation brick, using high pure mullite as raw material, is made by adding alumina dry vibration mix powder according to different type and then sintering in high temperature.

1. The energy-saving effects of lightweight insulation brick can be increased by 10% to 15%, having more advantages than the traditional products on energy-saving and insulation aspects
2. Compared to traditional covering agent products, the new lightweight insulation brick’s service life extends three times.
3. When contacting burning fire, lightweight insulation brick is non-smoking and non-toxic gases being released.
4. When lightweight insulation brick used in construction, no condensation water produced, sealing effect is much better.
5. At the same time lightweight insulation brick can reduce 5 to 10 decibels noise.
6. Lightweight firebrick refractory sale insulation brick can shorten project duration 3 to 5 times, reduce 20% project cost
7. Lightweight insulation brick’s output up to 120,000 pieces / day, assure prompt delivery.
8. Manufactured as per ASTM standard

Above all, compared with traditional products, Changxing lightweight insulation brick from insulation effect and environmental protection aspects is more advantageous and it has low cost and strong seal . Applied in smelting furnace, firing kiln, flue, refining apparatus, heating apparatus, reproducing apparatus, gas stoves and pipes, soaking furnace, annealing furnace, reaction chambers, and other similar industrial heat treat equipment.

ceramic fiber module has more technology advantages

(1) low density. Ceramic fiber fold module furnace lining is lighter as 70% than light-weight insulation brick lining, high insulating brick as 75_80% than mortar lining, so that it will reduce the stress on the steel structure of furnace, extend furnace’s operated time.

     (2) low heat capacity .castable refractory material  The heat capacity of furnace lining material is direct proportion to the weight of furnace lining, low heat capacity means that furnace absorb less heat during operated, and temperature rise fast. Heat capacity of ceramic fiber is just as 1/7 as light weight clay ceramic brick, it reduces energy consumed heavily, especially it makes a great effect for heating clay insulating bricks furnace’s energy saving.

     (3)Low thermal conductivity. When Ceramic fiber module is in 400C temperature, thermal refractory fiber board conductivity is less than 0.11, in 600, is 0.22, in 1000, is less than 0.28. Is about 1/8 as light clay brick,

     Great thermal shock resistance and mechanical shock resistance. Ceramic fiber module is pliable, it has a great resistance to heavy mechanical shock and thermal shock.

     (5)Simple construction. insulating castable Its special anchor type solves the problem that constructed slowly by traditional module, folded module will be inflated and extrude each other after untied. Furnace lining can be used at first time after construction without drying and protect.

     Till now, energy-saving, environmental protection and voiding glob warming has became the focal refractory material point in the whole world, material costs will become a bottleneck in the development of the steel industry. So that people care the heat loss in industry furnace more and more.According to the statistics, continuous system furnaces with Changxing ceramic fiber module, saving rate is 3% to 10%;batch furnaces and thermal equipment energy-saving rate is 10% to 30%, or even higher.

     Modular ceramic fiber alumina brick can extend the use of the kiln lining life and reduce the furnace heat loss, a new generation of applications crystalline ceramic fiber composite module can not only improve the cleanliness of the furnace, to improve product quality, but also can play a good energy saving effect. Therefore, industrial furnaces, especially in the steel industry furnace should be designed to maximize the use Changxing ceramic fiber modules as furnace linings, should make full use of the old furnace repair time, will lay bricks or layers to the ceramic fiber blanket lining modular structure, which is also an important measure to iron and steel industry to achieve sustainable development.

How to Identify High-Quality Polycrystalline Mullite Fiber

Pretend pretend to user to user the user the information sent back by the close paragraph of time, refractory company according to our sales department, with the high temperature refractories fiber industry boom will continue to improve, the market began to have some production capacity, quality assurance, no after-sales service "three noes" manufacturers or companies, through some of the heat treatment of high temperature refractory ceramic fiber knowledge understanding is not very comprehensive, through some of the heat treatment of high temperature refractory ceramic fiber application of risk, safety awareness is relatively low, through the network propaganda means low price induced heat treatment, the tolerance to low temperature resistant to high temperature, the poor quality of the products high quality, sold to heat treatment of users. High temperature fiber (polycrystalline mullite fiber, alumina fiber production process control requirements are relatively high, which glue: sol gel, and fiber: hot air temperature, pressure, speed, drying, heat treatment, hot processing temperature and time process data must control precision, or after use will appear fiber lined with severe refractory brick for sale contraction, powder, cracks and peeling off, resulting in the fire channelling. It not only damages the industrial furnace equipment, also caused the safety problems in industrial furnace, to heat treatment user brought no small loss.
Refractory fibre is a kind of a white fibrous lightweight refractory material, if not a professional general visual it is difficult not the quality of the material and high temperature levels, part of the "three noes" of the manufacturers or companies violate integrity management

Ceramic Rope

Ceramic Fiber Paper

Introduction

1.Building material industry,kiln,heating equipment and the inwall of high-temperature pipe line2.Chemical industrial high temperature of reaction equipment inwall3.Power plant ,gas turbine engine and heat insulation of unclear power4.The fire proof of high-rise building5.Used to make gasket6.High-temperature filter material

Being one of the reputed organizations in the market, we are engaged in offering an exclusive range of Ceramic Fiber Braided Rope. Popular for their abrasion resistance feature, offered braided ropes are manufactured by our capable vendors using unequaled quality material and cutting edge tools. Provided range is obtainable in various specifications and modified options as per clients’ diversified necessities.

Features:
Perfectly finished
Maximum strength
Surpassed quality

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The application of different kinds of refractory materials

Ceramic Fiber Paper

Introduction

1.Building material industry,kiln,heating equipment and the inwall of high-temperature pipe line2.Chemical industrial high temperature of reaction equipment inwall3.Power plant ,gas turbine engine and heat insulation of unclear power4.The fire proof of high-rise building5.Used to make gasket6.High-temperature filter material

Acidic refractories
A larger ladle refractory amount of silica brick and clay. Brick containing more than 93% SiO2 siliceous products, raw materials used are silica, silica brick and other waste. Brick acid-resistant slag erosion ability, but are vulnerable to erosion of basic slag, its high load softening temperature, close to its refractoriness, the volume does not shrink after repeated firing, and even a slight expansion, but anti-refractory abrasive
Poor thermal shock resistance. Mainly used for coke oven silica brick, glass melting furnaces, steel furnaces and other acidic thermal equipment. Bricks containing 30% to 46% alumina, refractory castable refractory clay it as the main raw material, refractoriness 1580 ~ 1770 ℃, thermal shock resistance, weak acid belongs refractory to acid slag have corrosion resistance, widely used, The current production capacity is the largest category of refractories.

Neutral refractory
High aluminum products in the main crystal phase is mullite and corundum, corundum content increases with increasing alumina content and containing more than 95% of refractory company alumina corundum products is a wider use of high-quality refractory materials. Chrome brick mainly chrome ore as raw material, the main phase is chromite. It slag corrosion resistance, but poor thermal shock resistance, high temperature load deformation temperature is low. Chrome ore and magnesite in different proportions of chrome magnesia brick made good thermal shock resistance, mainly used for basic flat roof tiles. Carbonaceous products are another neutral refractories, according to the carbonaceous feedstock composition and mineral products, divided into carbon bricks, graphite products and silicon carbide products categories. Carbon brick with high-grade petroleum coke as feedstock, plus tar, bitumen as a binder, at 1300 ℃ firing isolation under atmospheric conditions. Graphite products (except natural graphite outside) by 2500 ~ 2800 ℃ graphitized carbonaceous material obtained in an electric furnace. Places carbide silicon carbide products as raw materials, plus clays, binders such as silica calcined at 1350 ~ 1400 ℃. Silicon carbide can also be added to the silicon powder in an electric furnace under a nitrogen atmosphere castable is made of silicon nitride - silicon carbide products. Refractory Abrasives coefficient of thermal expansion of the low carbon products, high thermal conductivity, good thermal shock resistance, high temperature strength. fire bricks Long-term use at high temperatures do not soften, without any acid-base erosion, good salt tolerance, but also from metal and slag wetting, lightweight, high-quality refractory materials. The disadvantage is easily oxidized at high temperatures, it should not be used in an oxidizing atmosphere. Carbonaceous products are widely used in high temperature furnace lining (hearth, hearth, the lower part of the furnace body, etc.), non-ferrous metal smelting furnace lining. Graphite products can do the reaction vessel and petrochemical lined autoclave. Silicon carbide and graphite products can also be made with gold and copper smelting crucible with light alloy.

Basic Refractories
With magnesium products as a representative. It contains magnesium more than 80% to 85%, based on periclase main crystal phase. The main raw materials to produce magnesia brick of magnesite, seawater magnesia extracted from the sea by high temperature calcination of magnesium hydroxide) and the like. Alkaline slag and iron slag has good resistance. Polycrystalline mullite fiber melting point of pure magnesium oxide up 2800 ℃, therefore, magnesia brick refractoriness than the clay bricks and brick are high. Since the mid-1950s, the use of open hearth furnace and basic oxygen converter steel roof, basic refractories production increasing adoption, clay and silica brick production is declining. Basic Refractories mainly used open hearth, oxygen converter, electric furnace, non-ferrous metal smelting as well as some high-temperature thermal equipment.

Refractory Material-Silica Brick

Silica brick belongs to refractory material, with acid erosion ability, its thermal conductivity, high refractoriness under load, generally less than 1620 DEG C, only the ratio of its low refractoriness 70~80 C. The thermal conductivity of silicon increases with the increase of the working temperature, no residual shrinkage, in the baking process, the silica volume increases with temperature. So, brick is the ideal of Clay, High Alumina insulating bricks the coke oven refractory products, an important part of the large and medium (such as coke oven combustion chamber, ramps and regenerator) with brick masonry.

High strength, abrasion resistance, low resistance to carbon deposition of iron oxide, strong ability.

In the drying process, magnesia carbon brick brick maximum expansion occurs in 100~300 DEG C, 300 expansion before the total amount of expansion is about 70%~75%. The reason is that SiO2 appears in the baking process in 117 C, 163 C and 180~270 degrees and 573 degrees four points between the crystal transformation, 180~270 C, caused by the volume expansion of the largest square quartz.

Key to determine the thermal stability of ladle gunning mix silica brick quality is true density, true density size is one of the important signs of the transformation of quartz. The true density of silicon is smaller, the lime into more completely and the residual in the oven in the process of expansion is small.

In the brick, the scales of quartz crystal true density, linear expansion rate, thermal stability such as quartz and quartz, slag resistance, good thermal conductivity, high refractoriness under load, the volume is the most stable in the form of quartz. Good brick firing, tridymite content is the highest, accounting for 50%~80% times; cristobalite, accounted for only 10%~30%; and quartz and glass phase content in the range of 5%~15%.

What is the organizational structure of the high alumina brick

High alumina brick have very good ability of anti-acidity, anti-metal fluid corrode and anti-oxidation.

Generally speaking, the structure of high alumina brick is composed of solid material and gaseous hole. Porosity is an important factor to affect the properties of high alumina brick at room temperature and high temperature, especially at high temperature, the resistance to corrosion of the refractory brick is greatly reduced. The original is trapped:

pore forming high alumina brick molding Clay, High Alumina insulating bricks material in the air is not completely excluded; material removal of water left after space; calcining is not sufficient, some decomposition salts were not decomposed completely, should not completely burning burning ingredients; material composition is not uniform, high temperature sintering shrinkage uneven.

But in some light magnesia carbon brick high alumina refractory brick and fire brick production, it also introduced some specific holes evenly distributed. The existence of the air hole ladle gunning mix has a direct influence on the porosity, water absorption, bulk density and air permeability of high alumina brick.

The difference between ceramic fiber paper and ceramic fiber cloth

Ceramic fiber paper and ceramic fiber cloth are refractory insulation materials, can be used to heat insulation, how to better distinguish between ceramic fiber paper and

1.Building material industry,kiln,heating equipment and the inwall of high-temperature pipe line2.Chemical industrial high temperature of reaction equipment inwall3.Power plant ,gas turbine engine and heat insulation of unclear power4.The fire proof of high-rise building5.Used to make gasket6.High-temperature filter material

ceramic fiber cloth, according to the accumulation and experience, can be in several aspects to distinguish:

1 appearance. ceramic fiber felt cloth has a clear grid like, ceramic fiber paper is very little, and even no grid.
2 density. Ceramic fiber paper is greater than the density of ceramic fiber cloth.
3 thickness. Ceramic fiber paper high insulating brick is the most thin can be done 0.5mm, ceramic fiber paper can not do so thin, generally the most thin also has 2mm.
4 stand. Ceramic fiber paper can be like in our life that can be placed on the A4 paper, mold, stand up. refractory company Ceramic fiber cloth is like our life with cloth, very soft, does not

have to stand.
5 tear resistance. The toughness of ceramic fiber paper is not good with ceramic fiber cloth.

Whycic fiber module is widely applied in furnace

Ceramic fiber module is lighter than light weight insulation brick and can reduce the load of the furnace. It has lower heat capacity which means less heat absorbed by the

The construction is convenient, high strength, low thermal conductivity, good thermal insulation effect.

furnace in the reciprocal Clay, High Alumina insulating bricks operation and faster heating. It has white color and regular size and can be fixed directly to the industrial furnace.

Ceramic fiber magnesia carbon brick module has excellent chemical stability, thermal stability and flexibility. It is in pre-compressed state. After masonry is completed and the banding is lifted,

the expansion of ladle gunning mix ceramic fiber module can make the lining seamless and compensate the shrinkage of the lining, which can improve the thermal insulation and the integrity of the

furnace. The lining requires no drying and maintenance and can be used directly.

Using requirements of refractory materials for boiler

Using requirements of refractory materials for boiler

High-temperature micro expansion refractory plastic and super 3000 water clay refractory performance fairly, has shown some advantages in the application to the wall pipe and boiler furnace top. But this kind of material in its solidification time is long, easy to dry shrinkage crack, thus for the construction and maintenance of a great deal of trouble. 

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Modulation principle of slurry used for refractory brick

Modulation principle of slurry used for refractory brick

Brickwork with refractory slurry should follow the following principles:
    (1) to deal with all kinds of refractory slurry pre experiment and pre laying brick front, confirm the bonding time, different mud initial setting time, consistency and water;
    (2) Modulation of different mud to use different instruments, and timely cleaning;
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