Proportioning method for recycling waste residues of valuable metal through sulphur fixation treatment

A valuable metal and sulfur treatment technology, applied in the field of proportioning, can solve the problems of reducing product output, environmental pollution, consumption of mineral resources, etc., to save electricity costs and equipment maintenance costs, high purity and extraction rate, huge The effect of economic benefits

Active Publication Date: 2012-12-05
HUNAN ZHONGLIAO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for efficient recovery of useful metal from wastes such as spent cinder by treating them with sulfidizing agents like hydrogen fluorosilicone or other chemicals before being melted down together. By mixing these starting material evenly throughout it, this results in pure extractable metallics without requiring expensive processes like conventional methods. Additionally, when burning off residual ash during production, there'll only leave behind some small amount of harmful gases containing no more than 5 atomic percent elemental mercury (Hg). These technical effect include improved efficiency, cost savings, reduced emissions, lower energy consumption, better environment impactiveness, and potential applications where pollution control measures may have negative health consequences due to exposure thereto.

Problems solved by technology

This patented technical problem addressed by this patents relates to efficiently recycling or reusing used lead- containing waste products like industrial scraps (leads) that have been discarded from industry due to environmental concerns associated with their use. Current methods involve burning them away at different locations around the world without effective ways to reuse these valuable metals back on purpose.

Method used

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Embodiment Construction

[0014] The technical scheme of the present invention will be further described below through specific embodiments:

[0015] The present invention provides a method for mixing waste slag of valuable metals by using sulfur fixation treatment. The steps include material preparation, compaction, sulfur fixation treatment and purification. mixed, and the ratio of the lead-containing waste residue, iron material and fuel is 60-80:15-35:3-5.

[0016] Wherein, the lead grade in the lead-containing waste residue is greater than 20%; the iron content in the iron material is greater than 50%; the fixed carbon in the fuel is greater than 70%.

[0017] The briquetting step is intended to briquette the mixture with a coal press;

[0018] In the sulfur-fixing smelting step, the purpose is to put the compressed coal agglomerates and coke into the side-blown smelting furnace to carry out the sulfur-fixing reduction reaction;

[0019] After the sulfur-fixing smelting step, lead alloy, iron sulfi

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Abstract

The invention discloses a proportioning method for recycling waste residues of valuable metal through sulphur fixation treatment. The method comprises the following steps of: preparing materials, briquetting, performing sulphur fixation treatment and purifying. The step of preparing the materials comprises the following substeps of: uniformly mixing lead-containing waste residues, iron materials and fuel, wherein the ratio of the lead-containing waste residues to the iron materials to the fuel is (60-80):(15-35):(3-5). The initial raw materials are uniformly mixed according to a set proportion, so that the purity and the extraction rate of the extracted valuable metal are high; coal briquettes and coke are directly fed into a side-blown smelting furnace, sulphur fixation reduction reaction is performed, the conventional sintering process is not needed, and labor is greatly saved; desulphurization equipment and a desulphurization fan in a sintering process stop, so that labor is saved, and the electric power cost, and maintenance cost and other cost are greatly saved; high-dust fume which is obtained after sulphur fixation treatment is desulfurized and then can be directly discharged at high attitude, and the discharge of low-attitude amorphous sulfur dioxide and fume can be reduced; and the method has great economic benefit and good environmental benefit.

Description

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Claims

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Application Information

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Owner HUNAN ZHONGLIAO TECH
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