Do you know the smelting method of brown corundum

Brown corundum smelting belongs to submerged arc furnace smelting method.silicon carbide There are three smelting methods: fixed furnace melting method, dumping furnace smelting method and flow smelting method

(1) the brown corundum produced by dumping furnace (method) has many crystal aggregates, small crystal size, high glass phase and distribution on the grain boundary, so it has poor toughness, high brittleness, easy falling off of abrasive particles, good self sharpening property and good compactness, which is more suitable for consolidated abrasives and refractories.

(2) the brown corundum produced by frit furnace (method) has less crystal aggregate, large crystal size and less glassiness, so it has poor brittleness, high toughness and good wear resistance. Because of its large crystal, good toughness and brittleness, the brown corundum produced by this smelting method is more suitable for the manufacture of coated abrasives. So it is still the largest abrasive used in abrasive belt production.

In recent years, due to the problem of bauxite resources, the quality of bauxite used for smelting brown corundum has been seriously reduced, especially the quality of commercial corundum blocks is difficult to meet the quality requirements of downstream products. https://www.hslabrasive.com/ Therefore, the production, processing and subsequent treatment of brown corundum abrasives are becoming more and more important.