Sillimanite brick

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Refractory brick made of sillimanite minerals.Sillimanite into after high temperature calcination mullite and free silica.Commonly used high

temperature burning method and mud casting method.The physical and chemical performance is better than high alumina brick, 1770 ~ 1830 ℃,

refractoriness under load softening the starting point of 1500 ~ 1650 ℃.It is mainly used for glass tank furnace discharge hole forming,

blast furnace lining, furnace throat and ceramic industry kiln furniture.

Crystalline silicon steel gray, amorphous silicon is black, 2.4 g/cm3 density, melting point 1414 ℃, boiling point 2355 ℃, crystalline silicon atomic

crystal, hard and glossy, semiconductor properties.Silicon structure are similar to diamond, is a regular tetrahedron structure.Silicon chemistry

more lively, can at high temperature and oxygen etc. Various elements combined, insoluble in water, hydrochloric acid and nitric acid, soluble in

hydrofluoric acid and alkali, used to build alloy such as ferrosilicon, silicon steel, silicon single crystal is a kind of important semiconductor materials,

used in the manufacture of high power transistor, rectifier, solar cells, etc.Silicon is widespread in nature, containing about 27.6% of the earth's crust,

mainly exists in the form of silica and silicates.In the crust, the content of silicon in all elements content is second only to oxygen, second.Its shape is divided into crystalline form and network form

Q:What kind of refractory material will be used in the glass kiln?: 1. compact chromium oxide brickIt has the best resistance to high temperature E glass corrosion, its erosion basically does not cause pollution to the glass liquid, so it has become the first choice of E glass unit refractory bricks.Dense chromium oxide is formed by isostatic pressing. Its density is very high. The main technical indexes include Cr2O3 content >94%, porosity <15%, volume density >4.24g/cm3, and erosion loss only 1/10 of compact zirconia brick. Used in the E glass furnace unit kiln, directly contact high temperature molten glass melt, wall, melting parts, high temperature parts, pool bottom, main channel, pool wall and pool bottom, transition channel, pool wall, etc..

Q:What refractory materials are adopted in each part of the blast furnace?: The furnace throat is a part of the direct impact and friction when the burden drops, and the high density and high alumina brick is usually adopted. The upper and middle shaft temperature is only 400~800 degrees, the parts with high alumina brick and sillimanite brick. The lower part of the shaft due to high temperature and dust by scouring and alkali metal vapor erosion, so the requirements for the slag resistance, alkali resistance and high temperature resistance, wear resistance of high quality clay brick, high alumina brick, carborundum brick or corundum brick. Belly temperature reaches 1400~1600, and slag, steam erosion, erosion and corrosion is strong, therefore, the silicon carbide reaction bonded silicon carbide brick.

Q:Is it good for your cupola to use that kind of refractory, high aluminum brick, clay brick or red silica?: I suggest you go back to learn Chinese at primary school, and then ask questions again.Don't consider the cost, andalusite sillimanite brick well. But I don't have a cupola. It's too expensive to buy.

Q:I am a student of refractory materials. I would like to know the general rank of national refractory materials company: GL-60, high temperature daub, rock wool pipe shell, high quality magnesia brick, high alumina castable explosion-proof, high strength steel fiber steel fiber reinforced corundum castable, refractory castable, alkali brick, sillimanite brick, high alumina brick insulation level, wear-resistant castable, refractory castables for large power plant, silicon mullite brick, alkali resistant castable, blast furnace iron trough castable, super high alumina brick, magnesia spinel brick, castable, magnesia chrome brick, high alumina low cement castable, rock wool board, aluminum corundum brick, magnesia brick etc..

Q:Sillimanite brick: 1 、 high temperature resistant abrasion resistant coating;2, sillimanite refractory fireball;3, styrene kaolin - sillimanite insulation refractory products;4. High strength unshaped refractory material is used for building high temperature kiln;5 、 rare earth composite silicon carbide material;6, a composite insulation high-temperature refractory coating;7 、 refractory castable with high temperature self strengthening effect.

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