Cheap Carborundum Grit Manufacturers Philippines

Generally, hard clay is used as a raw material, the mature material is calcined in advance(brown fused alumina), and then the soft clay is mixed, and the product is molded by a semi-dry method or a plastic method at a temperature of 1300 to 1400 ° C. It is a refractory material commonly used in blast furnaces, hot blast stoves, heating furnaces, power boilers, lime kiln, rotary kiln, glass kiln, ceramics and refractory kiln(80 grit aluminum oxide). Avoid contact with alkaline slag as much as possible.

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The mineral composition of high-aluminum refractory is corundum, mullite and glass phase(garnet suppliers). The content depends on the dry Al2O3 / SiO2 ratio and the type and amount of impurities. It can be classified according to the Al2O3 content. The raw materials are natural bauxite of high bauxite and sillimanite(fine grit aluminum oxide). There are also fused alumina, sintered alumina, synthetic mullite, and clinker calcined with alumina and clay in different proportions.

1 high-aluminum bricks containing higher Al2O3 are such products(brown aluminum oxide). Sillimanite brick is a high-alumina refractory made of sillimanite group minerals. Mullite brick is a high alumina refractory with mullite as the main crystal phase. The content of Al2O3 is generally 65% ~ 75%. Silicon brick is mainly used in coke ovens, glass melting furnaces, acid steelmaking furnaces and other thermal equipment(70 grit aluminum oxide blast media). High temperature volume stability.

The Al2O3 / SiO2 ratio in this kind of product is close to 1, and the main minerals are mullite and a certain amount of glass phase and cristobalite(glass bead blasting media suppliers). The sillimanite and andalusite in the sillimanite family of raw materials have good volume stability during the calcination process and can be used for making bricks without pre-burning(180 grit aluminum oxide). You can also add a small amount of water glass, cement and other binders to make unfired products and amorphous materials.

Kyanite has a volume expansion of about 1% when mullite and cristobalite are formed at about 1300 ° C(brown aluminium oxide). Mineral composition In addition to mullite, those with lower aluminum content also contain a small amount of glass phase and cristobalite(240 grit aluminum oxide); those with higher Al4O also contain a small amount of corundum, mostly using high alumina bauxite clinker as the main raw material, plus a small amount of clay or Raw bauxite is used as a binding agent, which is obtained by molding and firing.

Coke oven silicon brick is used to build the heat storage chamber walls, ramps, combustion chambers, carbonization chambers and furnace roofs of coke ovens(steel grid). Because the coke oven needs to periodically load coal and coke out, the temperature of the silicon bricks on both sides of the combustion chamber wall changes drastically, so it is required that the coke oven silicon bricks have good thermal shock resistance(120 grit aluminum oxide harbor freight). It is mostly produced by sintering.

The chemical composition of Al2O3 and SiO2 in this high-aluminum product is evenly distributed, and various mineral crystals are intertwined with a uniform structure(garnet abrasive). It is made by fused casting according to mullite ingredients and is called fused mullite product. When the silicon brick is calcined again, irreversible volume expansion will occur due to the continued conversion of the quartz remaining in the brick(220 grit aluminum oxide blast media). Good thermal shock resistance.