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Method for hydrogen-based smelting of lead-containing concentrate and treatment of lead-based solid waste

A hydrogen-based and concentrate technology, applied in the fields of hydrogen-based smelting of lead-containing concentrates and treatment of lead-based solid waste, can solve the problems of high energy consumption, low thermal efficiency, and large carbon emissions, and achieve high energy density and high thermal efficiency. , the effect of reducing carbon emissions

Pending Publication Date: 2022-08-05
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In view of the problems of large carbon emissions, high energy consumption, and low thermal efficiency in the existing lead-containing concentrate treatment technology and lead-based solid waste treatment technology, it is necessary to provide a low-carbon solution for lead-containing concentrate and lead-based solid waste. Disposal methods for emissions and low energy consumption

Method used

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  • Method for hydrogen-based smelting of lead-containing concentrate and treatment of lead-based solid waste
  • Method for hydrogen-based smelting of lead-containing concentrate and treatment of lead-based solid waste
  • Method for hydrogen-based smelting of lead-containing concentrate and treatment of lead-based solid waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Lead concentrates (including PB: 50 %) and fuse (Feo, SIO 2 After CAO), according to the quality ratio 7: 1 ingredients, add the melting furnace of the hydrogen base side 1 to add the melting furnace 1, and the oxygen -rich air is sprayed into the melting pond from the side of the hydrogen base side. The oxygen -rich air is oxidized and melted to obtain coarse lead, flue gas and lead scum. Hydrogen base side blow melting refining furnace flue gas SO 2 The concentration is greater than 20 %. After the heat -heat boiler cools down, the dust collection system is obtained after the dust collection system is obtained. The dregs containing lead-containing dregs is PBO-Feo-SIO 2 Type, PBO-Feo-SIO 2 -CAO type, PBO-Feo-SIO2 -Cao-Zno type. The oxygen concentration in the oxygen -rich air is 80 %, and the melting temperature of the hydrogen base is 1100 ° C.

[0074] The above -mentioned melting lead slag is sent to the hydrogen base side to be returned to the original furnace to be r...

Embodiment 2

[0077] The difference from the embodiment 1 is that the operating temperature of the hydrogen -based restoration of the hair stove is 1350 ° C.

Embodiment 3

[0079] The difference from the embodiment 1 is that the operating temperature of the hydrogen -based restoration of the hair stove is 1500 ° C. The hydrogen -based volatile furnace produces flue gas, stab, coarse lead, and raw iron.

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Abstract

According to the method for hydrogen-based smelting of the lead-containing concentrate and treatment of the lead-based solid waste, lead smelting or treatment of the lead-based solid waste is conducted through the method, and carbon emission is avoided. Hydrogen is high in energy density and heat efficiency, and low energy consumption and high heat efficiency in the lead-based solid waste smelting or treatment process can be achieved; hydrogen serves as a reducing agent to replace a carbonaceous reducing agent, and carbon emission in the reduction smelting process is greatly reduced. By adopting the process, zero emission of greenhouse gas carbon dioxide can be realized; the treatment capacity can be improved, the lead recovery rate is increased, and the lead content of tailings is reduced. Meanwhile, valuable metals such as iron, zinc, tin, indium, germanium and the like are recovered, and a relatively high recovery rate is ensured; water vapor in the produced flue gas can be used for producing hydrogen and oxygen by an industrial hydrogen production system after being washed and purified, so that cyclic utilization is realized; the existing pyrogenic process lead smelting process and equipment can be utilized for simple transformation, so that the investment cost is low; the equipment is easy to operate and high in metal recovery rate, and the single-series productivity adapts to various scales.

Description

Technical field [0001] This application involves the field of metal smelting technology, especially a method for hydrogen -based smelting of lead ore and processing lead -based solid waste. Background technique [0002] Lead is one of the earliest metals used by humans. Metal lead has good ductility, corrosion resistance, and is easy to make alloys with excellent performance with other metals. Metal lead, lead alloys and their compounds are widely used in batteries, cable shestages, machinery manufacturing, ship manufacturing, light industry, lead oxide, and radio protection. With the increase of environmental pressure and the latest release of the "Standardous Conditions of the Lead -Zinc Industry" for further improvement of the energy consumption requirements of the lead smelting industry, my country needs to continuously improve the existing production process, reduce environmental pollution and production energy consumption, increase lead production of lead production Essence...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B13/02C22B5/12C22B5/16C22B19/20C22B19/30C22B19/34C22B25/02C22B25/06C22B58/00C22B41/00C22B7/02C22B7/00C21B13/14F27D17/00F27D7/06
CPCC22B13/02C22B13/025C22B5/12C22B5/16C22B19/20C22B19/30C22B19/34C22B25/02C22B25/06C22B58/00C22B41/00C22B7/02C22B7/001C21B13/0073C21B13/0006C21B13/14F27D17/008F27D7/06C21B2100/66C21B2100/80C21B2100/00F27D2007/063Y02P10/20
Inventor 吴卫国宋言李东波黎敏许良辛鹏飞崔大韡张阁彭思尧周宝
Owner CHINA ENFI ENGINEERING CORPORATION
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