A method for smelting lead-containing plaster of waste lead storage battery

A waste lead storage battery and paste mud technology, applied in the direction of improving process efficiency, can solve the problems of small production capacity, high metal recovery rate, high production cost, etc., and achieve the effects of short processing time, large processing capacity and low reagent cost

Active Publication Date: 2016-02-10
YONGZHOU FUJIA NON FERROUS METALS
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The method is environmentally friendly and has a high metal recovery rate, but the main disadvantages are small production capacity and high production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The main components of lead-containing plaster for waste lead-acid batteries are: S4.82%, Pb78.19%; the main components of iron ore are Fe32.55%, SiO 2 8.98%, CaO10.15%, Al 2 o 3 4.02%; industrial oxygen, of which O 2 Content ≥ 99%; quartz sand its SiO 2 The CaO content of limestone is 96%; the CaO content of limestone is 53.26%; the main component of pulverized coal is C76.08%; the copper converter slag contains Cu36.20%, FeO8.40%, SiO 2 6.50%.

[0027] The above-mentioned waste lead storage battery lead-containing paste slurry is mixed with pulverized coal, converter blowing slag, iron ore, limestone and quartz sand, and the addition amount of powder coal and converter blowing slag is 15.2% of the weight of the waste lead storage battery paste slurry and 26.8%, the total weight of iron ore, limestone, and quartz sand added is 30% of the weight of lead-containing plaster for waste lead-acid batteries, and the smelting slag type after batching is FeO and SiO 2 The ...

Embodiment 2

[0030] The main components of lead-containing plaster for waste lead-acid batteries are: S4.08%, Pb74.60%; the main components of iron ore are Fe36.12%, SiO 2 7.09%, CaO11.06%, Al 2 o 3 5.04%; industrial oxygen, of which O 2 Content ≥ 99%; crude lead composition: Pb98.2%; quartz sand its SiO 2 content of 96%; the CaO content of limestone is 53.26%; the main component of coke is C78.05%; copper refining slag contains Cu30.20%, FeO6.90%, SiO 2 16.50%.

[0031] The above-mentioned waste lead storage battery lead-containing plaster is mixed with coke, copper refining slag, iron ore, limestone and quartz sand, and the additions of coke and copper refining slag are respectively 17.4% and 28.0% of the waste lead storage battery paste weight, The total weight of iron ore, limestone, and quartz sand added is 38% of the weight of lead-containing plaster for waste lead storage batteries, and the smelting slag type after batching is FeO and SiO 2 The weight ratio is 1.43:1, CaO and S...

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PUM

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Abstract

The invention discloses a method for smelting lead paste of a waste lead storage battery. The method comprises the following steps: mixing the lead paste of the waste lead storage battery with a reducer-coke or powdered coal, copper residues, iron ores, quartz sand and limestone, wherein the additive amount of the coke or the powdered coal is 10%-25% by weight of the lead paste of the waste lead storage battery, the weight of the copper residues is 5-10 times that of sulfur in the lead paste of the waste lead storage battery, the added limestone, quartz sand and iron ores meet the smelting slag requirements that the weight ratio of FeO to SiO2 is 1.2 to 1.75 and the weight ratio of CaO to SiO2 is (0.4-0.9) to 1; adding a mixture into a cylinder or a disk granulator for granulating; conveying granulated materials into a smelting furnace; filling the smelting furnace with oxygen-rich air for reduction smelting. According to the method, a reducing atmosphere is controlled, so that copper-sulfur concentrates are obtained by reacting the copper residues with sulfur in the waste lead storage battery while crude copper is produced, and lead, copper and sulfur are directly recovered; the recovery rate of crude copper is more than 98% and the comprehensive recovery rate of copper and sulfur is more than 95%.

Description

technical field [0001] The invention relates to a pyrometallurgical process in the field of metallurgy, in particular to a new method for smelting lead-containing paste sludge of waste lead storage batteries. Background technique [0002] Waste lead-acid batteries are the main raw materials for secondary lead. After the recovered waste lead-acid batteries are crushed to a certain particle size, a hydraulic or medium sorting system is used to produce hard rubber, plastic, lead-antimony alloy particles and lead-containing paste sludge, of which the lead-containing paste sludge mainly contains PbSO 4 , PbO 2 , PbO and Pb, etc. At present, there are two treatment processes for metal lead recovery from lead-containing plaster sludge: fire method and wet method. [0003] The pyrometallurgy of lead-containing paste mud generally adopts the method of reduction smelting. The reducing agent used in reduction smelting is coke powder, coal powder or iron filings. After the lead-conta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B13/00C22B15/00
CPCY02P10/20
Inventor 张杜超叶凌翔叶立生邓盘军周红星罗璇
Owner YONGZHOU FUJIA NON FERROUS METALS
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