Top-blown bath antimony smelting method and bath smelting furnace

Abstract

The invention discloses a top-blown bath smelting antimony method which is characterized by comprising the following steps of: preparing materials, dosing the materials, smelting, collecting dust and discharging dregs. The bath smelting furnace adopting the method is characterized in that the depth of a bath (1) of a furnace body (6) is 1500mm to 2000mm; the upper part of the furnace body (6), namely a furnace top is provided with a feeding hole (2) and a spray gun (3) for feeding fuel and oxygen-enriched air; a flue (4) is arranged at the top of the furnace body (6); and the bottom of the furnace body (6) is provided with a dregs discharge hole (7). In the invention, the production can be continuously stable, the smelting process is strengthened, the production efficiency is high, the quality of antimony oxide powder is good, fuel can be used for preparing industrial concentrated sulfuric acid so as to thoroughly solve the environment protection problems, coke is replaced by bituminous coal and lump coal so as to reduce the production cost, the adaptability to raw materials is wide, antimony ore of original agents with lower grade can be processed, and the lead antimony ore can be processed.

Description

Technical field: [0001] The invention relates to a metal antimony smelting method, in particular to a method for smelting antimony in a top blowing molten pool and a molten pool melting furnace thereof. Background technique: [0002] At present, the large and medium-sized antimony smelting plants in my country basically adopt blast furnace volatilization smelting, reverberatory furnace reduction smelting and refining technologies, all of which have insurmountable shortcomings such as high energy consumption, serious environmental pollution and low labor productivity. As far as smelting antimony is concerned, the blast furnace process is a more advanced process at this stage. The main disadvantages of the blast furnace process are: simple process, outdated equipment, difficult flue gas treatment, and serious pollution. In particular, higher concentrations of oxygen-enriched smelting cannot be used, and flue gas SO 2 The concentration is only 1%-2%, and it cannot be used for...

AI Technical Summary

Problems solved by technology

The main disadvantages of the blast furnace process are: simple process, backward equipment, difficult flue gas treatment, and serious pollution

Due to the use of side blowing, part of the melt in the molten pool is blown into the smoke and mixed with the antimony oxygen powder, resulting in poor quality of the produced antimony oxygen powder, which cannot be further processed in the subsequent process, so this method cannot be used. Industrial production, ultimately unsuccessful

On the other hand, the smelting method is still a periodic production rather than a stable continuous production. The concentration of sulfur dioxide in the flue gas fluctuates greatly and the average concentration is low. It is difficult to control the production of sulfuric acid from the flue gas, and the cost of flue gas treatment is high.

Due to the large investment of the molten pool smelting method, and the small production scale of antimony industry enterprises, etc., the molten pool smelting of antimony has not been used industrially at home and abroad until now.

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