Smelting method of antimony concentrate

Abstract

The invention discloses a smelting method of antimony concentrates. The smelting method comprises the steps of drying the antimony concentrates so as to obtain dry antimony concentrates, performing ball-milling treatment on the dry antimony concentrates so as to obtain antimony concentrate powder, and performing oxidation smelting on the antimony concentrate powder by utilizing an oxidation smelting furnace so as to obtain high liquid antimony slags, wherein the antimony concentrate powder, rich oxygen and pulverized coal are sprayed into a molten pool from the side wall of the oxidation smelting furnace, fluxes are added from the top of the oxidation smelting furnace, and reduction smelting is performed on the high liquid antimony slags in a side-blown reduction furnace so as to obtain liquid antimony and reducing slags. By adopting the method, the oxidation smelting of the antimony concentrates can be completed in one step, so that the smelting efficiency of the antimony concentrates is obviously improved, and energy consumption is reduced.

Description

technical field [0001] The invention belongs to the field of metallurgy, in particular, the invention relates to a method for smelting antimony concentrate. Background technique [0002] Antimony metallurgy is divided into pyrometallurgy and wet method. At present, the pyrometallurgical process in the production of antimony metallurgy has an absolute advantage, reaching more than 95%; and the technological process of "antimony concentrate blast furnace volatilization smelting-coarse antimony trioxide reverberatory furnace reduction smelting" It is the basic process of most antimony smelters in my country at present. The antimony blast furnace volatilization smelting process has the advantages of strong raw material adaptability, large processing capacity, and easy mechanical operation, but the special operating conditions of "low material column, thin material layer, high coke rate, high temperature furnace top" also determine the existence of this process. High energy consu...

AI Technical Summary

Problems solved by technology

The antimony blast furnace volatilization smelting process has the advantages of strong raw material adaptability, large processing capacity, and easy mechanical operation, but the special operating conditions of "low material column, thin material layer, high coke rate, high temperature furnace top" also determine the existence of this process. High energy consumption, low metal recovery rate, high return rate, low direct recovery rate and other defects

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