Smelting processing method adopting oxygen-enriched molten pool for stibnite

Abstract

The invention discloses a smelting processing method adopting oxygen-enriched molten pool for stibnite. The method comprises the steps that oxygen-enriched air is blown into the oxygen-enriched moltenpool, then stibnite materials, aluminum oxide waste red mud, lime and a reducing agent are mixed and then fed into an oxygen-enriched smelting tank for oxygen-enriched reduction smelting, the antimony oxide with 86% of the antimony is obtained, and the temperature in the molten pool is controlled to be 990-1360 DEG C in the smelting process; the antimony oxide and the waste residue are recoveredand separated; and flue gas containing SO2 discharged from the top of the oxygen-enriched molten pool is collected, and the flue gas is recycled through waste heat, the flue gas is carried out purifying and dust removing, and sent into a sulfuric acid workshop for acid production, and the collected smoke dust and the waste residue are subjected to granulation and then returned to the oxygen-enriched smelting pool for the oxygen-enriched reduction. The method has the advantages that the adaptability of raw materials is high, the energy consumption is low, the direct yield of the antimony metaland the recovery rate are high, the treatment process is short, the process is stable, the production efficiency is high, the labor intensity is low, the production is clean and environment-friendly,environmental pollution and stacking management of the red mud are reduced, and the method has a good application prospect.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a smelting treatment method for stibnite in an oxygen-enriched molten pool. Background technique [0002] Antimony in antimony ore mainly exists in the form of antimony sulfide. For the treatment of antimony sulfide ore, there are mainly two treatment processes: wet method and fire method. Among them, the wet process of treating stibnite has the disadvantages of large amount of wastewater and high treatment costs. Pyrotechnological treatment of antimony ore, the process commonly used in China is blast furnace volatilization smelting-reverberatory furnace reduction, in the smelting process, antimony sulfide is volatilized and oxidized, at the same time gangue slag is released from the hearth, and the antimony oxide powder obtained by flue gas dust collection Enter the reverberatory furnace for reduction to produce crude antimony. Although the blast furnace volatilization smeltin...

AI Technical Summary

Problems solved by technology

A large amount of red mud cannot be fully and effectively utilized, so it can only be piled up in large-scale storage yards, which takes up a lot of land, and also causes serious pollution to the environment, causing many direct and indirect impacts on human production and life. Therefore, it is imminent to reduce the output and harm of red mud to the greatest extent, and realize multi-channel and large-scale resource utilization.