Bottom-blowing smelting equipment

Abstract

The invention discloses bottom-blowing smelting equipment, which comprises a furnace body. A material inlet and a flue gas outlet are arranged at the upper part of the furnace body. A product outlet and a slag outlet are arranged on the side part of the furnace body. A vulcanizing agent steam passage and a reaction gas passage are arranged at the bottom of the furnace body to respectively feed vulcanizing agent and reaction gas into the furnace body. The bottom-blowing smelting equipment provided by the embodiment of the invention has the advantages that since the reaction materials are added into the furnace body from the top of the furnace body and the reaction gas and the vulcanizing agent are fed into the furnace body from the bottom of the furnace body, the reaction materials can be agitated, the smelting reaction is enabled to be more full and the consumption of energy for reaction is reduced.

Description

technical field

[0001] The invention relates to the technical field of metal smelting, and more specifically, the invention relates to a bottom blowing smelting equipment. Background technique

[0002] Nickel has the characteristics of anti-oxidation, anti-corrosion, high temperature resistance, high strength, good ductility, etc. It has a wide range of uses, especially in the iron and steel and non-ferrous metal smelting industry. The proportion of consumption is the largest, followed by light industry, machinery manufacturing, chemical industry , petroleum and electric power industries, and the demand for nickel in high-tech fields is also very strong.

[0003] The world's land-based nickel reserves are about 41.7 billion tons, 39.14% of which exist in the form of sulfide ores, while about 70% of the world's nickel is extracted from sulfide ores, and nickel in oxide deposits accounts for 60.16% of nickel reserves. With the depletion of economically available nickel sulfid...

Examples

Embodiment 1

[0041] Add dry laterite, reduced coal and sulfur into the smelting furnace through the material inlet 11, and the mixed gas composed of reducing gas and protective gas is sprayed into the molten pool from the bottom blowing lance; gasified sulfur steam and protective gas are also sprayed into the melting pool through the bottom blowing lance molten pool. Molten laterite undergoes reduction reaction and nickel and iron sulfidation reaction under the action of reducing gas and sulfur vapor respectively. The reducing gas, sulfur vapor and protective gas injected by the bottom blowing lance can stir the melt violently, and the bubbling device 18 can accelerate the stirring effect. The low-nickel matte produced by reduction vulcanization is discharged from the product outlet 13, and the molten slag is discharged from the waste slag outlet 14.

technical field

[0001] The invention relates to the technical field of metal smelting, and more specifically, the invention relates to a bottom blowing smelting equipment. Background technique

[0002] Nickel has the characteristics of anti-oxidation, anti-corrosion, high temperature resistance, high strength, good ductility, etc. It has a wide range of uses, especially in the iron and steel and non-ferrous metal smelting industry. The proportion of consumption is the largest, followed by light industry, machinery manufacturing, chemical industry , petroleum and electric power industries, and the demand for nickel in high-tech fields is also very strong.

[0003] The world's land-based nickel reserves are about 41.7 billion tons, 39.14% of which exist in the form of sulfide ores, while about 70% of the world's nickel is extracted from sulfide ores, and nickel in oxide deposits accounts for 60.16% of nickel reserves. With the depletion of economically available nickel sulfid...

Examples

Embodiment 1

[0041] Add dry laterite, reduced coal and sulfur into the smelting furnace through the material inlet 11, and the mixed gas composed of reducing gas and protective gas is sprayed into the molten pool from the bottom blowing lance; gasified sulfur steam and protective gas are also sprayed into the melting pool through the bottom blowing lance molten pool. Molten laterite undergoes reduction reaction and nickel and iron sulfidation reaction under the action of reducing gas and sulfur vapor respectively. The reducing gas, sulfur vapor and protective gas injected by the bottom blowing lance can stir the melt violently, and the bubbling device 18 can accelerate the stirring effect. The low-nickel matte produced by reduction vulcanization is discharged from the product outlet 13, and the molten slag is discharged from the waste slag outlet 14.

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