Preparation method of high-performance black corundum abrasive

Abstract

The invention discloses a preparation method of a high-performance black corundum abrasive. The preparation method comprises the following steps: (1) proportioning of raw materials: selecting 43-51 parts of high-alumina bauxite, 48-56 parts of high-iron bauxite and 1-2 parts of magnesium oxide as raw materials, respectively crushing the selected raw materials, and then mixing the raw materials through an automatic batching system to enable the mixed raw materials to meet a proportion requirement; (2) electric melting: adding the raw materials mixed in the step (1) into an electric arc furnace for electric melting to prepare liquid black corundum, and then cooling the liquid black corundum to obtain a semi-finished blocky black corundum product; and (3) preparation of a finished product: subjecting the semi-finished blocky black corundum product obtained after electric smelting in the step (2) to crushing, impurity removal, cleaning and sorting through a jaw crusher and a ball mill so as to obtain a finished black corundum abrasive product. According to the invention, the technical problem of increasing the performance of the common-grade black corundum abrasive within limited cost is solved, a traditional technical concept in the field is broken through, and the inherent performance of a common-grade black corundum product is greatly improved.

Description

technical field [0001] The invention relates to the technical field of black corundum production, in particular to a preparation method of high-performance black corundum abrasive. Background technique [0002] Black corundum is a gray-black crystal obtained from bauxite as raw material after smelting in an electric arc furnace. Black corundum abrasive has the advantages of strong cutting force, high toughness, combination of rigidity and flexibility, and good wear resistance. It is mainly used for sandblasting of stainless steel, metal products, optical glass, bamboo and wood products, and is also used for manufacturing resin grinding wheels, cutting discs, and emery cloths. New type of abrasive. [0003] At present, the grade and performance of black corundum abrasives: ordinary grade (such as ZZ65 type), which is the main product in the market, has a large demand, a wide range of applications, and low production cost; high-quality grade (such as TS series), which has hig...

AI Technical Summary

Problems solved by technology

[0005] In some fields, the use of black corundum abrasives requires high toughness, but its production cost cannot afford high-quality black corundum products, so only ordinary grades of black corundum products can be used. Therefore, how to improve the performance of ordinary grades of black corundum abrasive products, At the same time, it will not greatly increase the production cost of black corundum products, which is a difficult technical problem in this field.