What is the difference between clay refractory brick and high alumina refractory brick

First, there is a difference in the material, one is clay, one is high aluminum.

Clay tiles, also known as sintered refractory brick, are man-made small blocks for construction. The fireclay refractories are made of clay (including shale, coal gangue and other powder) as the main raw material. They are processed, formed, dried and roasted. Solid and hollow respectively.

alumina brick is a kind of refractory, the main component of this refractory brick is AL2O3.
Alumina content of 48% or more of a neutral Refractory company refractory material. From bauxite or other alumina content of the higher raw materials formed and calcined. High thermal stability, refractoriness above 1770 ℃. Slag resistance is good for masonry electric furnace, glass melting furnace, cement rotary furnace lining.
High load and soft creep high alumina brick [1] is a high grade refractory made of superfine bauxite, fused corundum and fused mullite as the main raw material. The product has high-temperature creep, corrosion resistance, thermal shock stability, etc., suitable for large and medium-sized hot stove.

Basic information on fire - resistant aluminum silicate cotton for industrial furnaces

First, the industrial furnace fire-resistant high insulating brick with fire-resistant cotton is the corresponding fire-resistant material 20mm thick needle-punched blankets made by finishing, size neat, in full compliance with national standards, strict control of the plastic tube in the middle, acupuncture blanket thickness Uniform, all for the fine acupuncture blanket, unlike some enterprises in the middle of the module doping dross blankets, blankets, acupuncture blanket alumina brick slag ball content is low, low degree of hand, used to do all the pre-acupuncture blanket blanket, And there are loading tools to ensure the arrival of the module when the flatness of the company can also provide module installation CD-ROM and supporting the installation of the module tools can cash delivery, I feel dissatisfied may not. Jinan Shengyang fire-resistant ladle slide gate cotton has a good effect of fire-resistant insulation and insulation to improve the overall fire-resistant insulation kiln, and promote the progress of the furnace masonry technology. Classification temperature 1050-1400 ℃.
Note: a variety of fire-resistant cotton, is the corresponding material acupuncture blanket, according to the fiber component structure, size, made in the special machinery. In the processing process, are to maintain a certain percentage of compression to ensure that fire-resistant cotton lining lining is completed, the fire-resistant cotton in different directions of expansion, so that between the fire-resistant cotton into a seamless seamless with each other, Various forms of anchors clay insulating bricks are directly attached to the steel plate anchor bolts of the industrial furnace shell.
Second, the product features: excellent chemical stability; excellent thermal stability; excellent flexibility, the module in the pre-pressure state, in the lining after the completion of the expansion of the module so that the lining seamless and can compensate for fiber lining shrink, Improve the thermal insulation properties of fiber lining, the overall performance is good; excellent thermal stability and thermal shock resistance; ceramic fiber module installed quickly, and anchors set in the cold wall lining, can reduce the anchor material requirements. According to the customer for different furnace insulation design and construction training.
Third, the industrial furnace fire-resistant cotton insulation advantages:
1, cost-effective, construction costs flat or even lower than the brick structure.
2, long life, material composition is extremely stable, stable service life can reach 5 - 10 years, effectively saving maintenance costs and enhance the use of the cycle.
3, energy-saving effect is obvious, a conventional tunnel kiln, a year can save 100-200 tons of coal, reduce costs, increase profits and competitiveness.
4, low density: light insulation than brick lining more than 75% lighter than light weight castable lining 90% to 95%. Such as the use of fiber lining can greatly reduce the furnace load of steel, to extend the furnace life.
5, anti-quench cold hot, will not be damaged due to open shutdown.
6, the construction is simple: the construction process without leaving the expansion joints, construction workers after basic training can be posts, construction technology on the insulation effect of the lining of small.
7, no oven: lining construction can be put into use, no oven program.

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,firebrick refractory,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.

Influence of continuous casting refractories on pure steel and its development

In recent years, the performance requirements of steel is getting higher and higher. The higher the cleanliness of steel, alumina brick the better the performance. Steel impurity content reaches a certain level, the performance of steel will be a qualitative change. Steel oxygen, sulfur, phosphorus, hydrogen, nitrogen content of the five elements should be as low as possible. At present, the sum of the harmful elements coil grout [C, S, P, N, H, TO] in clean steel (IF steel and pipeline steel, etc.) produced at home and abroad advanced process can be controlled below 100 × 10-6, Some scholars have proposed the concept of ultra-clean steel, and defined as inclusions [C, S, P, N, H, TO] and the sum of 40 × 10-6 the following. Clean steel production is inseparable from the hot metal pretreatment, converter decarburization, refining and other secondary refining process optimization and control, and is also closely related to the use of refractory material, refined molten steel is likely to be continuous casting refractory pollution, Oxygen, nitrogen, hydrogen and other elements, so in the production of clean steel, refractory used in the study and reasonable choice is very important.
Continuous casting refractories Ladle Permeable Brick in clean steel production of molten steel in the carbon, nitrogen has a significant impact, the correct selection can be adsorbed molten steel sulfur, phosphorus inclusions, the purification of molten steel. In the production of clean steel should be selected alkaline, especially calcium refractories ladle slide gate, should adopt carbon-free, silicon-free or low-carbon low-silicon material. Metallurgical workers and the future direction of research refractories, refractories are continuous casting with functional, longevity and environmental protection.

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.

http://www.yilongrefractory.com/AllProductServlet?id=1&number=20

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.

Bonded Again Fused Cast Alumina Block

Bonded again fused cast alumina block is a type of bonded again sintered refractories brick made of fused corundum clinker as the granular material and fused corundum or sintered

corundum powder as the matrix.

The batching of granular materials should be according to the principles of tightly packing, multilevel ratio, refractory company less intermediate particles and more fine powder. This can improve

the density and sintering of the products. The additives include aluminum phosphate, phosphoric acid, aluminum chromium phosphate, cellulose and pulp waste solution. Among them,

he most promising is active phosphate. Recently, ammonium phosphate is on the trial and achieves good magnesia carbon brick results. The mud should be mixed evenly with a moisture content of 3-4%.

After high pressure molding, high dense bricks are obtained.

There are a few harmful ingredients in the corundum which will cause poor sintering or cracking, firebrick refractory sale so corundum should be pre-calcined before use. The residual ferro-silicon alloy

is oxidized and decomposed into Fe2O3 and SiO2 at 500-1000℃ and Ti in the minerals can be oxidized into TiO2 (rutile), which can cause large volume expansion. After pre-

calcining, the stress caused by those decomposition reactions and oxidation reactions can be eliminated during the pre-calcining process and cracks caused by the volume

expansion of those impurities can be avoided during the sintering process.
Fused corundum block has large volume, so it should be smashed with drop hammers and other ways and then high insulating brick pulverized. The pulverized fused corundum is stored by size after

screened. Fused corundum is hard and difficult to grind. Therefore it is wet ground by ball mills or vibration ball mills. The grain size can be less than 40μm or even 10μm.

The iron in the granular material can be removed with electromagnets and the iron in the fine powder can be washed with acids.


When using fused brown corundum or white corundum as raw materials, the frits should be smashed and then processed by removing the ferro-silicon alloy and other impurities.

White corundum should be processed by removing the flaky sodium aluminate crystals and other low-melting substances. The impurities are easy to be identified since they have low

density and float in the surface of corundum frits.

The fused cast alumina block has high purity. It is difficult to sintere and should be sintered at 1800℃. The type of the kilns used depends on the production scale. For small

batch production, high-temperature batch kiln is better. For batch stable production, the small high-temperature tunnel kiln is used.

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.

Chemical composition of fire clay bricks

The use of the bricks can reduce the heat capacity of kiln walls and promote the heat efficiency of kilns. The product is applicable for constructing industrial kilns and inner lining of kilns.

Fire clay brick is the refractory brick containing 30-46% SiO2. It is made of clinkers calcined from refractory clays as the oxidant and bond clay as a binder agent.
The main raw material is firebrick refractory clay. Clay is an earthy mineral. It can form plastic mud pie when mixed with water and maintain the shape after drying. It has rock-like hardness after fired at high temperature.
Additionally, the clay contains a certain amount of impurities such as quartz, mica, pyrite, feldspar and organic substances. The impurities, especially iron, can reduce the quality of clay refractory brick for sale and are harmful to the fire clay bricks.
Alkalis such as Na2O and K2O exist as mica. It can improve the sintering properties of clay and form dense products after sintered. It should be fewer than 2%.
The content of CaO is generally ladle refractory under 11.5% and distributed evenly. So, it will not affect the refractory properties of raw materials.
There is a certain amount of TiO2 in the bond clay. It exists as diamond. When it is less than 1%, it has no big effect on the quality of bond clay. In the chemical analysis, its content is not tested alone but counted in the content of A1203 + TiO2.
When the impurities in the clay exceed 6%, the refractories of clay will decease and cannot be used as the raw materials. The content of organic substances in the clay is fluctuated greatly, up to 5%.

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.

Nest article:

Application of monolithic refractories on industrial furnaces

The Composition and Properties of Magnesia Brick

Alumina Magnesia Carbon Bricks is made from high quality bauxite, corundum and fused magnesia. It is formulated with very high purity alumina and magnesia.

Magnesia refractory brick is a basic refractory product with periclase as its main mineral phase. It contains not less than 91% MgO and not less than 3.0% CaO.
Magnesia brick is composed of 80-90% periclase and 8%-20% other mineral phase including magnesium ferrite (MgO·Fe2O3), forsterite (2MgO · SiO2) and Calcium and magnesium refractory brick for sale olive stone (CaO·MgO·SiO2).Silicate glass contains about 3-5% magnesium, calcium and iron. These silicates may contain tricalcium silicate (3CaO · SiO2), magnesium rhodonite (3CaO · MgO · 2SiO2), calcium and magnesium olivine and forsterite, dicalcium silicate (2CaO · SiO2).
Magnesia brick has good thermal conductivity, good thermal expansion, good corrosion resistance to alkali molten slags and bad corrosion resistance to acid molten slags. Due to the low-melting silicate cements surrounded periclase, the beginning point of the softening temperature under load is not too high, but the collapse temperature is close to the beginning point. Its refractoriness is over 2000℃, but it does not make sense in the actual refractory castable use. Bad thermal shock stability is one of the main reasons for the destruction.
In the storage and transport, special attention should be paid to moisture-proof to avoid burst after affected with damp.

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,refractories 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.

Nest article:

Formation of smelting furnace slag layer

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.

related articles：
EAF roof damage mechanism and applicated refractory materials

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.

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Advantages of Building Ladle with Magnesia Carbon Brick

Improvement of structure and refractories in annealing furnace

Mainly composed of special level bauxite chamotte as starting material and assisted with special additives, the brick are processed by moulding under high pressure and sintering under high temperature, with features like large heat accumulating capacity and small creep rate. 

Annealing furnace of conventional construction will cause oil waste, air pollution, thus the furnace will ladle refractory be damaged, affecting the normal production. The main reasons are as following:
(1) structure is not reasonable. The lining adopts heavy high alumina refractories brick, and hanging off the roof of the structure, and the car door seal is not good, it will cause long time heating, refractory castable poor insulation, bad heat storage. When the workpiece is heated, much of the heat from the furnace inhaling energy increases, leading to severe heat loss.
(2) poor sealing. The old equipment’s oven door must be open in order to work properly if the furnace is heated to 600 ℃, causing the flame to break the door and severe heat loss.
(3) poor combustion conditions. Due to incomplete combustion, when the door closed, it will be easy to plug, so that the furnace increased fuel consumption.

2 rehabilitation programs
Since the annealing furnace structure can not be changed to a great extent, the choice of high-temperature Changxing alumino silicate refractory ceramic fiber feltfolded block and a new fuel spray combustion technology for system transformation are adopted.

2.1 removed the original panel and furnace burners on both sides of the shell plate, using A3, S = 30mm, S = 8mm steel, and L100 × L100 × angle iron welded reinforcement.

2.2 removed the original high alumina refractory brick for sale lining and use the new energy-saving Changxing alumino silicate refractory ceramic fiber folded block, which is fixed to the furnace wall plus welding folding fibers collapse block with stainless steel fasteners for installation, its performance has anti-oxidation, heat storage, good insulation, heat loss, easy maintenance, energy saving compared with the refractory lining in the 20-30%.

2.3 Removed the original top heavy high alumina bricks and demolition angle, instead of new energy-saving high-temperature ceramic fiber folding block.

2.5 reinforced door. Surround the door by L100 × L100 × 10 angle steel reinforcement, installed new energy-efficient furnace door Changxing alumino silicate refractory ceramic fiber collapse block.

Magnesia Alumina Carbon Brick, Alumina Magnesia Carbon Brick

Introduction

Alumina Magnesia Carbon Bricks is made from high quality bauxite, corundum and fused magnesia. It is formulated with very high purity alumina and magnesia.

Advantages

It has low thermal conductivity, good isolation ability, and appropriate residual expansion

Application

Alumina Magnesia Carbon Bricks are used in Ladle Sidewall and Bottom impact areas.

End of magnesia bricks mainly used in steel-making silica mortar, electric furnace and the furnace walls, permanent oxygen converter lining, non-ferrous metal smelting furnaces, high temperature tunnel kilns, calcined magnesia brick and cement kiln liner, bottom of heating furnace and the furnace walls, glass furnace regenerator checkers.

Our company magnesia brick by sinter magnesite as raw material, the reasonable gradation, high pressure forming, high temperature sintering. This product is relatively slag corrosion resistance.


http://www.yilongrefractory.com/ProductServletOne?id1=1&id=4

color classification about Sillimanite bricks

Mainly used for coke oven, hot blast stove, acid steelmaking furnace and glass melting furnace. The products can be manufactured according to customers' different requirements.

Refractoriness of mobility than 1830 degrees increments the mobility combines with the Al content.

Sillimanite bricks has more items color, important has three species color variants: Golden, Maroon and basket color, which Golden and Maroon variants distribution more wide, and basket color variants is is mineral learn of curios, according to discussion, Cast Big Sillimanite Block in the of iron, chrome and titanium is decided its refractory fiber felt color diversity of important reason, while and its generated of schist environment phase relationship.
1, variant of schist, golden yellow is the thickness and symbiotic pegmatite has not altered the characteristics of sillimanite crystals. Golden is due to ferric iron or in individual situations are as a result of trivalent chromium. Golden sillimanite combines firebrick refractory sale with iron and 0.3 1.8% combination of chromium.
2, Maroon sillimanite variant is also in the thickness variation in symbiotic pegmatite schist schist and composition. Maroon sillimanite combination Fe content greater than 1%.
3, blue silicone line stone and iron levels are low, the combination of iron is less than 1%, the combination of titanium to trace, spar with basket, color is very, very likely is the result of valence electrons between softened.
4, with a strong acid treatment concentrate, due to removal of sillimanite surface impurities, such as iron mask and red and Brown specularite, Brown golden color white or gray.
Henan Xinmi Changxing Refractory material Co., Ltd. our product portfolio covers shaped products such as refractory material, refractory brick, refractory castable, nozzle refractory, ceramic fiber,slide gate, etc;

Technological characteristics of mullite brick

High strength, high temperature stability is good, the creep rate is small.

Plasticity of fireclay bricks and concluded by its split decisions, and plasticity in close relationship with the conclusion. In most situations, strong plasticity, which are also strong.

So produced are usually entered into as malleable to arbitrate its functional strength, plasticity and in accordance with the established ratio of injection molding process and the conclusion of agent, executive producer of all kinds of refractory products. Sintering of the refractory magnesia carbon brick is the calcination of fireclay bricks can be function of the density and intensity, regardless of the conclusion of clay bricks on burning clinker using rigid High-alumina clay bricks and clay tiles, is a key process attributes.

Technological characteristics of mullite brick important apart, plasticity, conclusion and sintering. These properties directly influence its function as a refractory. Fireclay bricks apart is its amount of micro-particle content so soft clay brick is a kind of broken up objects, while other fireclay bricks apart by grinding after crushing degree.
Henan Xinmi Changxing Refractory material Co., Ltd. our product portfolio covers shaped products such as refractory material, firebrick refractory sale, refractory castable, refractory nozzle, ceramic fiber,slide gate, etc;

important characteristics of refractory materials

The coil grout has coil inter-turn that can be used for insulation. ※It can be used as the new coil size layer for the coating or the coil size layer for repair.

We have noticed that several characteristics of refractory: 

1. refractory material usually belong to the heterogeneous, different linear expansion coefficient between the phases is often different, it can cause stress and cause micro-cracks. At the same time, refractory (brick) from the firing temperature cools for stress but also alumina brick a source of micro-cracks. In addition, during formation of stress can cause high stress and micro-cracks on the surface, but do not lead to the final break.
2. refractories usually ingredients firebrick refractory multistage, coarse granule, granule and powder in a broad size range, thus there are many pore, pore tends to become the starting point of fracture.
3. refractory materials at the time of refractory brick for sale manufacture due to forming the remaining pore and cause micro-cracks cannot be cleared during firing and use.
4. refractory materials used in the process thermal stress due to thermal shock and mechanical stress will significantly exceed their mechanical strength.

Henan Xinmi Changxing Refractory material Co., Ltd. our product portfolio covers shaped products such as refractory material, refractory brick, refractory castable, refractory nozzle, ceramic fiber,slide gate, etc;

high aluminum bricks and unshaped refractory materials

Mainly composed of special level bauxite chamotte as starting material and assisted with special additives, the brick are processed by moulding under high pressure and sintering under high temperature, with features like large heat accumulating capacity and small creep rate. They are avail able for blast hot stove matched of middle and small blast furnace.

High aluminum brick construction technology and equipment, coupled with gravity, innovation pumping and injection casting material, more simple, more reliable construction technology has slide gate fire clay provided favorable conditions. In order to realize the full automation of the construction process control computer and construction process, to promote "the research and development of gradient or multilayer castable". "Gradient castables" refers to the uncertainty from the hot side Ladle Permeable Brick to cold is lining castables gradually by the change of structure and thermal properties of matrix components, consisting of several layers. This will more adapt to the lining of actual conditions of use, may go to better use of results.

The unshaped refractory materials in monoblock stopper Chinese accounted for only about 15%, is expected in recent years can be increased to 30%-40%. should be committed to the development of a better high temperature properties of AL2O3 based and MgO based no cement castable. Selective binding system more suitable; the introduction of non oxide; from the angle of economy and technology feasibility study into the nano powder on the quality of unshaped refractory materials.

Henan Xinmi Changxing Refractory material Co., Ltd. our product portfolio covers shaped products such as refractory material, refractory brick, refractory castable, refractory nozzle, ceramic fiber,slide gate, etc;

various of performance analysis of Alumina bricks

Produced with unique advanced technology, the clay and high alumina heat insulating bricks possess the characteristics of high intensity for pressure and good thermal shock stability. The use of the bricks can reduce the heat capacity of kiln walls and promote the heat efficiency of kilns. The product is applicable for constructing industrial kilns and inner lining of kilns.

Introduction to the making craft of high alumina brick

Alumina bricks can be divided according to the different attributes are many ways to apply as a manufacturer for the appropriate distribution of our product quality and technology and other high alumina bricks, first alumina brick porosity What have porosity?
All percentage of the total volume of pore volume alumina brick station is porosity. Meanwhile alumina bricks have permeability, air permeability per unit time is the amount of gas by the size of the China refractory material refractory bricks.

Production technology of high alumina brick and clinker clay brick more similar, the difference is that the ingredients in the clinker ratio is higher, can be as high as 90 ~ 95%, before breaking the clinker grading sorting and screening in addition to iron, firing temperature is higher, such as Ⅰ, Ⅱhigh alumina refractory brick with tunnel kiln firing when the general is 1500 ~ 1600 ℃.

Chinese production practice has proved that high alumina clinker strictly choose grading, and hierarchical storage before crushing, bauxite clinker and clay together fine grinding method, to improve the quality of products.


Tips manufacturers, high alumina brick thermal expansion and contraction with temperature changes due to expansion and contraction of the reverse. Anti rapid thermal quench performance is alumina brick thermal shock resistance and chipping resistance. Alumina bricks in long-term use due to impurities affect tissue invasive exfoliation.China refractories material atmosphere and other factors. Therefore, high alumina brick refractoriness with stability.

Henan Xinmi Changxing Refractory Material Co., Ltd.'s product portfolio covers shaped products such as refractory materials,refractory brick, refractory castable,refractory nozzle, ceramic fiber, slide gate, etc;