A method for smelting brown corundum by using dust removal powder

Abstract

A method for smelting brown corundum by using dedusting powder, which relates to the field of smelting brown corundum. The method uses adding dedusting powder into hot water, stirring evenly with alumina powder to produce granular materials, and then dehydrating the dehydrated granular materials Send it to the mixing bin to mix evenly with coke and iron filings, and finally pass through the electric arc smelting furnace for layer-by-layer feeding reaction smelting and refining, and after inspection, cooling, grading, crushing and screening, the finished product of brown corundum is obtained; The above method can effectively use dust removal powder to produce smelted brown corundum, which not only reduces the production cost of the enterprise, but also solves the environmental protection problem of corundum correspondingly.

Description

[0001] 【Technical field】 [0002] The invention relates to the field of brown corundum smelting, in particular to a method for smelting brown corundum by using discarded brown corundum dedusting powder. [0003] 【Background technique】 [0004] As we all know, brown corundum is a brown artificial corundum made of bauxite, iron filings and coke as the main raw materials, and is smelted at high temperature in an electric arc furnace. Because of its good toughness, high melting point, corrosion resistance and linear expansion Because of its low coefficient and good grinding performance, brown corundum is often selected to be crushed, screened and prepared, and then made into metals suitable for processing and grinding with high tensile strength, such as various general steels, malleable cast irons, carbon steels and hardened At the same time, brown corundum can also be used to manufacture high-grade refractory materials; on the other hand, brown corundum dust removal powder, common...

AI Technical Summary

Problems solved by technology

[0004] As we all know, brown corundum is a brown artificial corundum made of bauxite, iron filings and coke as the main raw materials, and is smelted at high temperature in an electric arc furnace. Because of its good toughness, high melting point, corrosion resistance and linear expansion Because of its low coefficient and good grinding performance, brown corundum is often selected to be crushed, screened and prepared, and then made into metals suitable for processing and grinding with high tensile strength, such as various general steels, malleable cast irons, carbon steels and hardened At the same time, brown corundum can also be used to manufacture high-grade refractory materials; on the other hand, brown corundum dust removal powder, commonly known as dust collection powder, refers to the ultrafine dust collected during the brown corundum crushing process. This substance is quite different from the finished products of brown corundum smelting, so it is often piled up as waste by brown corundum processing enterprises; Powder will not only affect environmental protection, but also cause serious waste of resources, and correspondingly increase the production cost of the enterprise. Therefore, how to reduce the fine particle size and large impurities. The application of dedusting powder of titanium dioxide and coke powder in the production of brown corundum has become one of the important research topics in brown corundum smelting.