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The main raw material of black corundum is aluminum oxide (AI2O3) with a content of 70% to 80%, containing more impurities such as silicon oxide and titanium oxide, and it is a black corundum. It is a new type of environmentally friendly material.

Silicon carbide abrasive, also known as moissanite, can also be called emery or refractory sand. It is a man-made substance. It is made by high-temperature smelting of raw materials such as quartz sand, petroleum coke (or coal coke), and wood chips in a resistance furnace.

Garnet abrasive, also known as natural emery, is a silicate mineral. Generally brown powdery particles. After grinding, it can be used as the friction surface of grinding powder, polishing paper, grinding wheel and whetstone. It has a long history of production and use.

Walnut shell filter material is a water treatment filter material that uses high-quality pecan shells as raw materials, which is crushed, polished, steamed, washed, and treated with medicines, and then screened and processed twice.

Aluminum sulfate(CAS No.11143-01-3 ) is an inorganic substance with a chemical formula of Al2(SO4)3, a molecular weight of 342.15, and a white crystalline powder)or flaky. In the paper industry, it is used as a precipitation agent for rosin gum, wax emulsion and other rubber materials, as a flocculant in water treatment, as a retention agent for foam fire extinguishers, as a raw material for the manufacture of alum and aluminum white, as a raw material for petroleum decolorization, deodorant, and pharmaceuticals. Raw materials, etc., can also manufacture artificial gems and high-grade ammonium alum.

The fiber ball filter material is a spherical filter material made of polyester, polypropylene or acrylic fibers, which has good elasticity. Advantages such as small head loss. It uses a large number of biological masses attached to its own surface to repeatedly contact with oxygenation and sewage to degrade the suspended solids and organic matter in the wastewater to achieve the purpose of treatment. It is widely used in various water treatment industries with a density of 1.38g/cm. The fiber ball filter material is made of fiber filaments. Compared with the traditional steel particle filter material, it has the advantages of good elasticity, no floating on the water surface, large gap, long working cycle and small head loss. During the filtration process, the voids of the filter layer gradually become smaller along the direction of the water flow, which is more in line with the ideal filter material. , Regenerable, backwash with gas and water, the amount of flushing water is 1-2% of the amount of filtered water, suitable for filtration of various water quality. The filling height of the fiber ball filter material is 120cm, and the fiber ball filter material will naturally decrease by about 30cm after entering...