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Black corundum, also known as black silicon carbide, has good hardness, wear resistance, high temperature resistance, and is very similar to brown corundum, but its scope of application is very different. Black corundum can be used for surface polishing of steel, hardware, aluminum and other components. It can also process materials. Brown corundum has high hardness, good wear resistance, good flexibility and high density.

Brown corundum can be used in the production and running in of abrasives. The addition of brown corundum can produce high-grade refractory materials, as well as sandpaper visible in daily life, which is also made by the processing of brown corundum. The wear resistance of white corundum is similar to that of black corundum and brown corundum. Its different characteristics are small volume, high density and high corrosion resistance.

When we buy, we should first check the purity of white corundum, because the purity of high-quality white corundum is very high. If the purity of white corundum is not good, then the quality of white corundum will be directly denied. This white corundum must be not good. This is the advantage of white corundum over brown corundum. These are the important places to distinguish the quality of white corundum. As long as we pay attention to these places when we buy it, there must be no problem.

Chrome corundum is a derivative of white corundum. Its appearance is rose. Its hardness is similar to that of white corundum. Its toughness is slightly higher than that of white corundum with high strength, good grinding performance and high grinding accuracy. The abrasives made of this kind of abrasives have good shape retention and similar application range with white corundum, especially suitable for fine grinding and forming grinding of various cutting tools, measuring tools and instrument parts. Generally, chrome corundum has better grinding performance than white corundum.

In fact, sub white corundum, bauxite corundum or high alumina corundum is a kind of dense fused alumina based on bauxite. It is produced by electrofusion of special grade or first grade bauxite in reducing atmosphere and controlled conditions. Reducing agent (carbon), settling agent (iron filings) and decarbonizing agent (iron scale) are added during melting. In the smelting process, the excessive deoxidizer is used to reduce the TiO2 in the early stage, and the decarburizer or blowing oxygen is added to remove the excessive carbon in the later stage, so as to obtain the sub white fused corundum.

Generally, each woven bag should be packed with 25kg brown corundum sand. The storage of high-purity brown corundum sand shall be separated from other ordinary brown corundum sand to avoid the invasion of impurities. The above are some storage methods of brown corundum sand for your sharing. Of course, some corundum sand should be stored according to the specifications. I hope you can pay more attention to the storage of corundum sand in the future. Please read the above storage methods carefully. The above contents are for reference only.