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Method for comprehensively recovering lead and silver from lead slag

A lead slag, lead-silver technology, applied in solid separation, flotation and other directions, can solve problems such as lead slag flotation for lead that have not yet been found, and achieve the effects of improving comprehensive recovery capacity, reducing resource waste and high recovery rate

Active Publication Date: 2012-10-24
YUNNAN LUOPING ZINC & ELECTRICITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The well-known publication of Zeng Maohua, Xi Changsheng, Peng Cuihong and others "Research on the Enrichment of Lead in Flotation Lead-containing Waste Residue" is aimed at lead waste residues containing more than 5 wt% lead Using the process of "one-time roughing, one-time selection, one-time sweeping", the recovery rate of lead is 95%, and the product containing more than 30wt% lead is obtained by flotation, and the research on tailings is finally produced in the report, but it has not been found that lead slag Research report on flotation of lead and recovery of silver at the same time

Method used

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  • Method for comprehensively recovering lead and silver from lead slag
  • Method for comprehensively recovering lead and silver from lead slag
  • Method for comprehensively recovering lead and silver from lead slag

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Embodiment 1

[0022] Produced by Yunnan Luoping Zinc Electric Co., Ltd. Electric Zinc Factory, the weight percentage of its main components is lead 14.98wt%, silver 0.0128wt%, zinc 8.45wt%, moisture 27.12wt% lead slag 5000g, water slurry , control the liquid-solid ratio to 1.8:1, add sodium carbonate solid at the same time, control the pH=5.0-5.4 of the solution, stir for 25min; add 66.00g of sodium sulfide and make sodium sulfide into a 10wt% aqueous solution, stir for 15min, then add 6.50 g zinc sulfate and prepare zinc sulfate as 10wt% aqueous solution to inhibit zinc, stir for 5min, add 1.50g butylxanthate and prepare butylxanthate as 10wt% aqueous solution, stir for 2min, add 1.50g butylamine black medicine And prepare the butylamine black medicine as a 10wt% aqueous solution, stir for 2 minutes, then add 1.50g of ethyl thiazolin and prepare a 10wt% aqueous solution of butylamine, stir for 2 minutes, open the inflation valve, scrape and bubble for 8 minutes, and carry out rough separati...

Embodiment 2

[0031] Produced by Yunnan Luoping Zinc Electric Co., Ltd. Electric Zinc Factory, the weight percentage of its main components is lead 15.02wt%, silver 0.013wt%, zinc 8.65wt%, moisture 27.42wt% lead slag 7000g, water slurry , control the liquid-solid ratio to 2.5:1, add solid sodium carbonate at the same time, control the pH of the solution to 5.0-5.4, and stir for 30 minutes. Add 180.00g sodium sulfide and prepare sodium sulfide as a 10wt% aqueous solution, stir for 20min, then add 27.00g zinc sulfate and prepare zinc sulfate as a 10wt% aqueous solution to inhibit zinc, stir for 6min, add 5.50g butyl xanthate and Butyl xanthate is prepared as a 10wt% aqueous solution, stirred for 3min, 5.50g butylamine black medicine is added and the butylamine black medicine is prepared as a 10wt% aqueous solution, stirred for 3min, then 5.50g ethyl thiamine is added and ethyl sulfide is added. Nitrogen was prepared as a 10wt% aqueous solution, stirred for 3 minutes, opened the inflation valv...

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Abstract

The invention relates to a method for comprehensively recovering lead and silver from lead slag. The lead slag produced in an electric zinc factory serves as the raw material and mainly contains 10-18wt% of lead, 7-10wt% of zinc and 0.01-0.02wt% of silver. The flotation process of one roughing, three times of scavenging and one cleaning is adopted, lead in the lead slag is selected in flotation mode, silver enters lead concentrate, tailings enter a rotary kiln for volatilizing, and further the remained valuable metals in the lead slag are recovered. During flotation, sodium carbonate serves as regulators, sodium sulfide serves as vulcanizers, zinc sulfate serves as inhibitors, and butyl amine aerofloat, butyl xanthate and diethyldithiocarbamate serve as collecting agents. Lead recovery rate can reach 95-97%, and silver recovery rate can reach 90-95%.

Description

technical field [0001] The invention relates to a method for comprehensively recovering lead and silver from lead slag, in particular to a method for comprehensively recovering lead and silver from lead slag produced in the zinc hydrometallurgy production process. It belongs to the technical field of nonferrous metallurgy. Background technique [0002] The lead slag produced by Yunnan Luoping Zinc Electric Co., Ltd. Electric Zinc Factory has the main components of 10-18wt% lead, 7-10wt% zinc, and 0.01-0.02wt% silver. In order to increase the added value of the product, relevant The technicians carried out the flotation of lead slag, and finally made the product quality meet the requirements of the national standard for lead concentrate while increasing the lead and silver content of the product. In this way, the secondary mineral resources of the enterprise are fully utilized, and the recovery rate of valuable metals in the enterprise is improved. It meets the requirements ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03B1/04
Inventor 吴慧赵德军穆志芹赵兵伍陈长浩罗娟
Owner YUNNAN LUOPING ZINC & ELECTRICITY
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