Refractory Raw Material Sintered Spinel Made in China

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China main port
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Min Order Qty:
25 m.t.
Supply Capability:
5000 m.t./month

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Packaging & Delivery

Packaging Details:In 25kg blastic woven bags; In 1000kg jumbo bags.
Delivery Detail:according to the order quantity


SIMAS65 is a kind of sintered spinel made of high purity alumina powder and high quality active

magnesia, sintered at super-high temperature. It has low creep rate, small thermal expansion

coefficient, the strong ability of anti-chemical corrosion.



SIMAS65 is used for making high quality castables for ladle and for con-casting slide plates, SIMAS65 is also widely used for making blast furnace hearth, stove and ceramic kiln.


Typical Chemical Analysis:












0.2% max

0.3% max

0.4% max


0.2% max

0.5% max

0.5% max


0.4% max

0.6% max

0.6% max






0.3% max

0.3% max

0.3% max

BD.- g/cm3

3.3 min

3.25 min

3.2 min

 Typical Physical Properties:

Magnetic material                          0.02%max.

Apparent porosity                           3.0%max.

Water absorption                           1.0%max.

Density of volume (g/cm3)                   3.25min.


Split Sizes Available :

5-3mm, 3-1mm, 1-0mm, 0-200mesh

Other size available upon request.



Refractory Raw Material Sintered Spinel Made in China

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Q:What are the specific steps of stirring the steel ladle castable?
Steps are as follows. 1 Compulsory mixer is used to stir the castable and bags, rope and other debris can not mix in the castable when stirred. 2, Castable should be unpacked on the scene. Stirred volume depends on the capacity of the mixer. Castable should be accurately measured and put into a blender. 3 The process of first dry mixing and then wet mixing is adopted. After the castable is added to the mixer, it is dryly mixed for 2 minutes, add about 5.2 to 5.5 percent of water and continue to add water while stirring. Water that is 80% of the total should be added, and then decide whether to continue to add or not depending on the consistence (noting that the water must be clean water and sewage can not be used). Then it is wetly mixed for 4 minutes and stirred for not less than 6 minutes at one time, until castable is even. In general, the bottom is slightly dry and the wall of the ladle is slightly dilute (the amount of water is only for reference). 4, The amount of water and mixing time should be controlled strictly when stirred to ensure that the needs of the consistency are met. If castable is too thin, it will seriously affect the quality of the material. The stirred volume, stirring time and water that is added should be consistent and they can not suddenly be thick or suddenly be thin. If the consistency does not meet the requirements, the castable should be put back to the mixer and stirred with appropriate water or dry materials. 5, It should be stirred evenly and casting should finish in 20 minutes, in order to avoid sclerosis, affecting structural strength of ladle lining 6, After each completion of construction, varieties of castable should be changed and the mixer should be cleaned 7, Stirring can stop in halfway. If the mixer breaks down and it can be repaired in a short time, some of the materials have to be removed before the machine is opened. If the machine can be repaired on time, castable refractory should all be removed.
Q:What is the best refractory company?
Recently, many of the activities of palladium ah, find a few big beauty shoot videos, but also to send jewelry, and draw, seems to be the need to vigorously develop the market China.
Q:What's the definition of fire endurance of the fire-resistant coating for steel structure?
1. Fire endurance. Conduct fire resistance test of any building component according to the standard time-temperature curve, and the time when it is subjected to the fire to the time when it loses support capability or fire insulation function or its integrality is destroyed is referred to fire endurance. 2. Steel has relatively low fire endurance which is usually 0.25h only, namely 15 minutes; 3. Of steel structure buildings, steel can be used as beams, pillars, etc. but its fire endurance is not enough (usually these components have higher requirement on fire endurance, and take pillar as an example, it is usually demanded that the fire endurance should be 2-3h), and under this condition, it needs to brush fire retardant coating so as to raise the fire endurance. As to the specific quantity or types of the fire retardant coating, it is decided upon the actual conditions. In short, the building material needs to meet the required fire endurance of the buildings.
Q:What kind of fireproof material is used for steel structure?
Fireproof material means the coating is with thickness 3 mm (including 3 mm) or less, good decorative effect, capable of expanding foam, fire endurance of generally within 2 h of steel structure fire at high temperatures. fire-resistant coating for steel structure is generally solvent-based systems, with strong bond strength, water resistance, weatherproof, good flowing property, decorative; it slowly expanded at high temperature to a dense layer of fire insulation, which has a strong refractory shock, delaying the rise of steel, protecting steel components. ultra-thin intumescent fireproof coatings for steel structure can be used by spraying, brushing or rolling, generally using construction steel with fire endurance within 2 h. new type of ultra-thin fireproof coatings for steel structure has a fire endurance of 2 hours or more, mainly using binding agents of polymethacrylate or epoxy resin and amino resin and chlorinated paraffin, which are of special structure, added with fire retardant system such as high degrees of polymerization, phosphoric acid, dipentaerythritol, adding titanium dioxide, wollastonite and other inorganic refractory materials, solvent oil 200 # solvent composite. All kinds of light steel structure, grid and other use of this type of fire-resistant coating conduct fire protection. As such the fire retardant paint coating is ultra-thin, greatly reducing the amount of thin steel structure fire retardant coating, thereby decreasing the total cost of the project. The steel is protected and the fire is prevented.
Q:What kind of material is refractory fiber?
Refractory fiber, also known as ceramic fiber, is fibrous thermal insulation refractory. It has the characteristics of ordinary fibers, such as softness, flexibility, having a certain tensile strength. And it can be further processed into a variety of products such as paper, wire, rope, tape, blankets and felts.
Q:What are the meanings of azs, 34% and ec in fused brick?
The fused brick, also called zircon corundum brick, is shorted as AZS for three chemical components in Al2O3-ZrO2-SiO2 ternary diagram. I don't know the meaning of EC.
Q:What are the requirements when producing fireproof materials by kaolin?
. Kaolin are kaolinite crowded mineral composed of tiny flakes tubulose, lamellar smaller than 2 microns. it is composed of kaolinite, dickite, pearl stone, halloysite etc. I chemical formula of which is AL2O3-2SiO2-2H2O, the main mineral component is kaolinite and halloysite. Except kaolinite and halloysite there are other minerals montmorillonite, illite, pyrophyllite, quartz and feldspar associated. kaolin contains large amounts of the chemical composition AL2O3, SiO2, and a small amount of Fe2O3, TiO2, and small amounts of K2O, Na2O, CaO and MgO, etc. white pottery is made of kaolin and is now internationally accepted scientific name --Kaolin, derived from the eastern suburb of Jingdezhen high-Village side of the mountain kaolinite. kaolin plasticity, cohesiveness, certain dry strength, sinterability and whiteness after burning, making it the main raw material for ceramic production;. white, soft, highly dispersed, adsorption and chemical resistance with other excellent process performance, it has been widely used in the paper industry as well as industrial sectors such as agriculture and defense cutting-edge technology in the field of rubber, plastics, refractories, petroleum refining . according to the purpose and need, it can be processed, treated and purified, they can be used to produce activated clay.
Q:What kinds of refractory will be used in kiln of sintering ceramics?
If it is ordinary ceramic, you can use ordinary clay bricks and high alumina brick, adding calcium silicate board, the insulating brick and cotton fiber.
Q:Are fire materials poisonous after burning?
Neutral refractory is mainly composed of alumina, chromium oxide or carbon. Corundum products containing more than 95% of alumina are a kind of high quality refractory materials with a wide range of uses. Chrome brick with chromium oxide as its main component has good corrosion resistance, but its thermal shock resistance is poor, and its deformation temperature is lower at high temperature. Carbon refractories with carbon bricks, graphite and silicon carbide products, low coefficient of thermal expansion, high thermal conductivity, good thermal shock resistance, high strength, resistance to acid and salt corrosion, especially weak acid has good resistance, without wetting of the metal and slag, light. It is widely used as lining material of high temperature, and also used as lining of autoclave in petroleum and chemical industry.
Q:What are the new refractories? What are the features? How about their application and development?
In metallurgy, in what position should it be used, in order to make the best. Answers are as following. In iron, steelmaking or converter. When questioning, pay attention to the ways. Answers: Try to use synthetic refractory materials.

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