Antimony flotation concentrate flash oxidization primary refining production process and flash antimony metallurgical furnace

Abstract

The invention discloses an antimony flotation concentrate flash oxidization primary refining production process and an flash antimony metallurgical furnace, wherein the production process comprises the following steps: (1) spraying fuel in a hearth for combustion and heating; (2) spraying antimony flotation concentrate powder and air in the hearth after the hearth is heated; (3) causing the antimony flotation concentrate and oxygen in the air to be subjected to oxidization reaction at high temperature to produce antimony oxide; and (4) carrying out air blast and dilution on the slag at the bottom of a furnace body, and then discharging. The flash antimony metallurgical furnace suitable for the method consists of a furnace comprising the hearth and a slag hopper, wherein the furnace body is provided with spray holes used for spraying the fuel, air and antimony flotation concentrate into the hearth. The process provided by the invention is suitable for treating the low-moisture antimony powder concentrate, and ensures extremely low coal consumption under 5 percent, and high production capacity up to 50t / m<2>.d, thus having incomparable advantages in the two indexes compared with the traditional melting method, further obviously improving the production capacity and saving energy.

Description

technical field [0001] The invention relates to an antimony flotation concentrate flash oxidation roughing production process and an antimony flash metallurgical furnace. Background technique [0002] Antimony ore rough smelting mainly adopts blast furnace, roasting furnace and open hearth furnace smelting process, among which roasting furnace and open hearth furnace smelting process use coking coal or lump coal for heating, generally only suitable for treating sulfide lump ore with grade less than 20%, fine ore is only suitable for A small amount is added at high temperature, the charge is added from the top or the upper part of the side, and the slag is withdrawn from the bottom or the side. The slag is the solid slag of the charge gangue. It is basically a two-handed operation, with low mechanization, low labor productivity, and small bed capacity (4-6t) / m2.d), poor ore adaptability, low smelting recovery rate. [0003] The blast furnace volatilization smelting process ...

AI Technical Summary

Problems solved by technology

[0008] (1) High energy consumption, especially the coke rate, which generally reaches about 35% to 40% of the ore weight;

[0009] (2) The flux rate is high, resulting in high slag rate, which affects the recovery rate of antimony metal;

[0010] (3) The economic benefits of processing low-grade ore are poor due to factors such as high coke rate and low recovery rate

Images