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

Abstract

The invention discloses a flash antimony metallurgical furnace adapted in an antimony flotation concentrate flash oxidization primary refining production process, which comprises a furnace body (1). The furnace body is provided with an injection hole (2), so that fuels, air and antimony flotation concentrate powders can be injected into the hearth of the furnace body through the injection hole. The upper part of the hearth of the furnace body is served as a reaction zone (3), while the lower part thereof is served as a slag zone (4). The part of the furnace body positioned within the slag zone comprises an internal air flow distribution plate (5) and a housing (6). The housing (6) is provided with an air inlet pipe (8). An air chamber (7) is provided between the air flow distribution plate and the housing. Air in the air inlet pipe flows through the air chamber and the air flow distribution plate and then enters into the slag zone. The invention is suitable for treating the low-moisture antimony powder concentrate and enables the coal consumption to be less than 5 percents. The flash antimony metallurgical furnace is extremely low in energy consumption and high in production capacity, wherein the production capacity is up to 50t / m<2>.d. Comparing the above two indexes with those of the traditional melting method, the invention has incomparable advantages. The invention further obviously improves the production capacity and saves 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amount is added at high temperature, the charge is added from the top or the upper part of the side, and the slag is withdrawn from the bottom or the side.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

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