Key Factors For The Casting Process Of Fused Cast AZS

The casting speed determines the casting time. Every casting products has its best casting time. Improper insulating castable casting time will cause many defects. If the casting speed is too fast, the stream will be coarse and the flowing speed will be too fast, which will produce big impact force on the mold. The force may destroy or melt the refractory brick mold and cause protrusions. Additionally, gas will be brought into the mold and produce a thin shell filled with gas and bubbles in the casting. Besides gas, raw materials in the furnace mouth may be brought into the melt and cause defects. Conversely, if the casting speed is too slow, it will produce defects such as loose corners, knots, sand and pouring shortage.
Back pour refers to the process of repouring some melt into the shrinkage cavities after the casting is completed. Generally, refractory brick for sale small bricks are solidified quickly and do not require back pour. Medium bricks can be repoured. Large bricks require back pour and it takes a long time. Back pour is one of the effective ways to reduce the shrinkage cavities and improve the bulk density.

Casting is an important step of the manufacturing process that has great influence on the quality of the fused cast AZS block. Key factors that affect the casting process of fused cast refractories AZS include the casting temperature, casting speed, the casting time and back pour.
The casting temperature is the temperature of the melt when it is poured into the mold. The casting temperature of fused cast AZS can be as high as 1820-1840℃. The viscosity of the melt is up to the chemical composition and temperature of the melt. The chemical composition is up to the formulation. The casting temperature is crucial since the higher the temperature, the lower the viscosity, the better the flow-ability. However, if the temperature is too high, the temperature difference between the casting and the mold is small, which will increase the shrinkage stress and cause cracks.

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.

What is Spun Ceramic Fiber Blanket

Ceramic Fiber Blanket

Spun ceramic fiber blanket has low thermal conductivity, low thermal capacity, excellent thermal stability and thermal shock resistance, excellent tensile strength, excellent thermal insulation, good fire protection and sound absorption. It can be used in industrial furnaces, heating devices,high temperature pipe lining, industrial high-temperature reaction equipment, heating equipment lining, power boilers, gas turbine, furnace door, and high-temperature filter materials.

The heat capacity of spun ceramic fiber blanket is only 1/10 of that of lightweight refractories lining and light castable refractory material lining. The heat capacity of the lining material is is proportional to its weight. Low heat capacity means less heat absorption of the furnace in the reciprocating operation and higher heating rate. It can greatly reduce energy consumption of the temperature operation control, refractory company especially the start and shutedown of the heating furnace.

Spun ceramic fiber blanket is made of spun ceramic fiber cotton by needling, heat setting, vertically and horizontally cutting and rolling. Ceramic fiber blankets with different thickness and density provide a wide range of choice of materials to obtain the best insulation and energy efficiency.
Spun ceramic fiber blanket has uniform diameter, long fiber and low content of slag balls. Its interleaving degree, delamination, properties, erosion ressitance, flexibility and tensile strength are all improved, which improves the application performance of spun blanket and reduces the material loss. Spun blanket does not contain any binding agent to ensure that products have good reliability and stability in various environments.

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.

Properties and applications of fused cast AZS

The products are produced by corundum and chromium oxide as main materials, formed from casting, after being treated under high temperature, it has high hot strength and good wear resistance, suitable for making the slide rail part of heating furnace.

Fused cast AZS block is tundish well block the most widely used fused cast refractory brick. According to the ZrO2 content, it can be divided into 33#, 36# and 41#AZS.
Fused cast AZS magnesia carbon brick containing 33% ZrO2 is called 33# fused cast AZS; fused cast AZS containing 36% ZrO2 is called 36# fused cast AZS; fused cast AZS containing 41% ZrO2 is called 41# fused cast AZS.
Fused cast AZS is mainly composed of baddeleyite and corundum and their eutectic crystals. High viscosity glass phase is filled in the gaps of crystals. The crystals is directly precipitated monoblock stopper from the molten liquid and well developed. So, it has large crystal particles and stable crystal phase. Except the voids, it has compact structure and better density than the common sintered bricks. The pores are mainly closed pores and the crystals are intertwined each other, so it ladle slide gate has good mechanical properties and wear resistance. The impurities are difficult to invade the bricks. Therefore, this refractory brick has good corrosion resistance. besides, the transformation of ZrO2 at 900~1150℃ when heating or cooling may cause irregular deformation.
Fused cast AZS block can be used in areas in direct contact with molten metals and molten slags. It is the essential material used in the key areas that suffer from severe corrosion.

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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Introduction of Changxing Refractory self-flow castable

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.

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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.

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EAF roof damage mechanism and applicated refractory materials

Reasons of why tundish dry vibration mix takes the place of tundish insulation board

FiberFrax Duraboard products are rigid, high temperature ceramic fiber boards manufactured in a wet forming process using Fiberfrax alumina-silica fibers and binders. They offer low thermal conductivity, high temperature stability, uniform density and excellent resistance to thermal shock and chemical attack.

Following the clay and high alumina brick, tundish insulation board, tundish coating, Dry vibration mix is the fourth working lining materials for tundish. Following compare shows why dry vibration mix could replace the insulation board successfully.
    Insulation board, which is mainly used in cold tundish (one without baking before being used), it devotes much for us in energy saving and heat insulation. But, due to its fatal disadvantage, it is being eliminated quickly. 
1. Bonded with many agent, insulation board add silica and hydrogen under high temperature in steel liquid, reduce its purity, produce harmful gas to hurt workers health. VS: Dry vibration mix is bonded without carbon, produce no sharp aroma, and greatly reduce avoid the pollution for steel liquid and environment. 
2. Short using life (for common steel, only 8 Hrs, For Mn-alloy steel, only 4hrs). VS: dry vibration mix usual using life: min 24 hrs, when worked with the fast exchange nozzle, it could reach average using life 45hrs.
3. Easy to be broken during transportation, once one piece is broken, the whole set will can not be work. VS: dry vibration is premixed and packaged in waterproof jumbo, applicable for ship, truck, train, air, etc long way transportation. 4. Low corrosion resistance, easy to make tundish become leakage. VS: dry vibration mix is made by ramming, dense and stable, after sintering, form a protect layer with tundish backing layer, could improve tundish using life and reduce spare tundish number.
    Therefore, should you want to improve your tundish life, please do not hesitate to try Changxing Refractory dry vibration mix, 24 hrs using life is waiting for you.



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Reasons of why tundish dry vibration mix takes the place of tundish insulation board

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The Chinese New Year has passed and Changxing Refractory is back

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.

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Application of monolithic refractories on industrial furnaces

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Introduction of Changxing Refractory self-flow castable

Fire clay bricks manufacturing process

Generality High Alumina Brick &Clay Brick

The fire clay bricks manufacturing process includes seven steps.

1)Obtain raw materials. tundish well block The clay for manufacturing bricks is obtained from the ancient soil deep under the earth’s surface. The soil in this layer is slightly deeper in color

than the topsoil and was formed about 80,000 to 120,000 years ago. At that time, the climate is warm and humid and plants are diverse and lush , which mades the soil in this

period soft and sticky and a Clay, High Alumina insulating bricks good raw material for fireclay bricks.

2)The clay is stacked in the open air for up to six months to make its inner structure loose. Then it is zirconium sizing nozzle crushed and screened to get the pure fine clay.

3)Add water to the clay and then repeat kneading to make it into thick mud. This step is very important for the finished products.

4)Puur the mud into the mold. tundish coating Compact it and then remove the remaining mud with a wire bow.

5)Release the green body from the mold and dry it in the shadow to avoid cracks and deformation caused by exposure to the sun.

6)After drying, fire bricks in the kiln. This process is the most important part of the brick-manufacturing process.

7)After ten days of firing, the green body is basically sintered. if stopping heating at this time, the outside air may come into the kiln and make the bricks oxidized into red

bricks. in order to prevent oxidazing, seal the kiln roof with clay.

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.

your company should need energy-saving building materials green low carbon development---Ceramic fiber cloth

1. Lightweight and low thermal conductivity2. Excellent insulation at high temperature3. Strong and abrasive, and can b used in tough environment4. Good tensile strength 5. No inflammability

Ceramic fiber cloth with good performance, not only can be used for lining the inner wall of the heat preservation heat insulation materials in high temperature apparatus sealing material, refractory fiber board refrigerator insulation materials, building materials, heat insulation, sound insulation, fire prevention materials, insulating castable metallurgy, chemical industry, oil insulation thermal insulation materials such as, can also be used for aviation, aerospace insulation, thermal insulation material, the prospect is very broad

Due to its combination of inorganic fiber, so often need to use adhesive. Organic binder with acrylic refractory material resin, polyurethane emulsion, poly (vinyl esters and acrylonitrile and butyl acrylate polymer, polyvinyl alcohol and used, but these organic material under the high temperature, malodorous produce harmful gases, reduce paper quality etc., so also uses the colloidal silica and sodium silicate and aluminium phosphate inorganic binder .


In order to analyze different kinds of inorganic adhesive effect on the properties of ceramic fiber paper, the chosen alumina silicate sodium aluminum sulfate and ammonia three inorganic adhesive, and on them were pairwise experiments: liquid alumina brick alumina and sodium silicate, colloidal alumina and water glass and colloidal alumina and aluminum sulfate - ammonia. The ceramic fiber paper physical properties for the determination of loss on ignition, to investigate the different effects of various adhesive systems with different kinds of adhesive and different adhesive composite papermaking ceramic fiber paper.

Building energy-saving firebrick refractory energy-saving emission reduction effective way of building energy consumption accounted for than 28%, the high energy consumption, low standard of building energy conservation in our country, poor enforcement, the future energy-saving potential; building energy consumption is the main source of building energy consumption, decided to use the energy consumption of the main factors is the wall material; and developed countries ratio, our country currently used the proportion of new wall materials is very low, led to the huge difference between our country and the developed countries, building energy consumption.

Energy saving refractory brick for sale building materials industry life cycle of the development of building materials industry in China is in a similar background, and the development of low-carbon economy in China is in Copenhagen. The development of LOW-E glass, gypsum board, ceramic fiber and PVC is the four sub sectors in the future, and the future development of China is in the future.


Industry leading companies will get considerable development we think production capacity and market share in absolutely dominant position, have a certain monopoly advantage and management ability in the industry leading level of the industry leader, will enjoy growth, both in industry and the company.

To give energy saving building materials industry, good rating as the two aspects of the energy saving and emission reduction and open source, energy saving building materials and new energy future growth space is huge, but the valuation of building materials industry is far lower than the new energy industry.

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 refractory material resistance feature, offered braided ropes are manufactured by our capable vendors using unequaled quality material and cutting edge tools. alumina brick Provided range is obtainable in various specifications refractory brick and modified options as per clients’ diversified necessities.

Features:
Perfectly finished
Maximum strength
Surpassed quality

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Silicon nitride is a chemical compound of silicon and nitrogen

In addition to Si3N4, refractory material several other silicon nitride phases (with chemical formulas corresponding to varying degrees of nitridation/Si oxidation state) have been reported in the literature, for example, the gaseous disilicon mononitride (Si2N); silicon mononitride (SiN), and silicon sesquinitride (Si2N3), each of which are stoichiometric phases. As with other refractories, the products obtained in these high-temperature syntheses depends on the reaction conditions (e.g. time, temperature, and starting materials including the reactants and container materials), as well as the mode of purification. However, the refractory fiber board existence of the sesquinitride has since come into question.

Silicon Nitride Product : Silicon nitride is a chemical compound of silicon and nitrogen. If powdered silicon is heated between 1300 °C and 1400 °C in an atmosphere of nitrogen, trisilicon tetranitride, Si3N4 is formed. The silicon sample weight increases progressively due to the chemical combination of silicon and nitrogen. Without clay insulating bricks an iron catalyst, the reaction is complete after several hours (~7), when no further weight increase due to nitrogen absorption (per gram of silicon) is detected.

The Si3N4 phase is the most chemically inert (being decomposed by dilute HF and hot H2SO4). It is also the most thermodynamically stable of the silicon nitrides. Hence, Si3N4 is the most commercially important of the silicon nitrides and is generally castable refractory material understood as what is being referred to where the term "silicon nitride" is used. Silicon Nitride Product

Silicon Nitride Product : Silicon nitride (i.e. Si3N4) is a hard ceramic having high strength over a broad temperature range, moderate thermal conductivity, low coefficient of thermal expansion, moderately high elastic modulus, and unusually high fracture toughness for a ceramic. This combination of properties leads to excellent thermal shock resistance, ability to withstand high structural loads to high temperature, and superior wear resistance. Silicon nitride is mostly used in high-endurance and high-temperature applications, such as gas turbines, car engine parts, bearings and metal working and cutting tools. Silicon nitride bearings are used in the main engines of the NASA's Space shuttles. Thin silicon nitride films are a popular insulating layer in silicon-based electronics and silicon nitride cantilevers are the sensing parts of atomic force microscopes.

The manufacture of refractories involve the following steps

1. Grinding
Raw materials crushed and refractory castable ground to fine powder using crushers, pulveriser, ball mills.

2. Mixing
In order to alter the chemical properties of the refractories, two or more powdered raw materials are thoroughly mixed with a suitable binding material, which makes moulding easier.

3. Moulding
Moulding can ladle refractory be done either manually or mechanically by application of high pressure.
Hand-moulding produces refractories of low strength and low density. Mechanical-moulding produces refractory brick for sale of high strength and high density

4. Drying
Drying is carried out slowly to the moisture from refractories.

5. Firing
It is done at a temperature as high as or higher than their use temperature . Firing is generally carried out in kilns.

The refractory company refractories are fired,
(i) to stabilize and strengthen their structures.
(ii) to remove water of dration.
(iii) to facilitate development of stable mineral to form the finished products.

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.


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Introduction and advantages of Chromite Sand

Chromite ore is also called chromite sand which is a kind of special sand for casting. Some natural spinel based mainly on chromite ore, then be crushed, grinded and filtered, thus filter the specified size chromite sand out which can be used as modeling sand.

The main content of chromite sand is Cr2O3. It is characterized with stable heating area, ......

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What is the Performance Analysis of insulation bricks

Acid-resistant ceramics can resist most media except hydrogen-arc acid, thermal alkali and thick alkali, and has better anti-corrosion effect in moist chlorasalt,hydrochloric acid etc. and any alkali under normal temperature.

1, the use of high temperature:
Up to 1750 degrees, good thermal stability. Reheating line rate of change is small, the use of more long-term.
2, optimizing the structure, reducing the weight of the furnace:
Now with a high-temperature materials are all heavy brick bulk density of 2.6-3.0g/cm, and insulation Magnesia Carbon Brick only 1.1 ~ 1.5g/cm, the same volume of one cubic meter, alumina hollow ball brick can reduce the weight of 1.1-1.9 tons .
3, saving materials:
Achieve the same temperature, such as the use of heavy bricks and insulation bricks price its price is quite, but also need considerable insulation China refractory material. If insulation Taphole Brick, saving per cubic meter of 1.1-1.9 tons of heavy usage brick, it can save 80% of the fire-resistant insulation materials.
4, save energy:
Thermal insulation characteristics of a good Ladle Magnesia Carbon Brick, low thermal conductivity, can play a very good insulation effect, reduce heat dissipation, improve thermal efficiency and thus serve the purpose of saving energy. Energy savings up to 30%.

Fire Clay Bricks can be used to make high temperature insulation, ultra-high temperature insulation filler, high temperature refractory lightweight aggregate concrete, high temperature castable. To reduce the weight of the furnace, the transformation of the structure, saving material, energy savings will be achieved remarkable results.

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;

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;

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

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.

Introduction to the making craft of high alumina brick

Alumina bricks can be divided refractory fiber felt 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 zirconium sizing nozzle 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 ladle gunning mix 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

refractory 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;

The market analysis of silica brick industry by Henan Xinmi Changxing

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.

On the other hand, these industries in the fierce market competition to lower prices and China refractory material raised consumption, maintain and improve the life of the requirements,refractory brick for sale resulting in refractory enterprises not only to reduce raw material and production costs, but also to greater investment to accelerate development and application of new technologies and new products. Refractory species is closely around the requirements of the development of the user industry, long life, energy saving, environmental protection and multifunctional.

In recent years, the China refractory material industry is facing a serious oversupply situation, showing lower production, corporate restructuring, increased competition, innovation and research and development efforts to enhance services to enhance user awareness and capacity trends. On the one hand, the main user industries such as refractory technology and management advances in steel, cement, glass, nonferrous metals and other industrial refractories consumption leads to decrease, while the use of refractory performance refractories proposed new stringent requirements.

Like other industries, the refractory industry in recent years, the world has experienced significant structural changes mergers and acquisitions, and mergers and acquisitions swept the globe. Some of the weak competitiveness of small businesses on the verge of bankruptcy, the collapse of competitive enterprises are powerful combination, continue to grow, and some existing monopoly situation.

refractory company 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;