Method for electrolyzing high-content low-grade lead bullion

An electrolysis method and low-grade technology, applied in the improvement of process efficiency, photography technology, instruments, etc., can solve the problems affecting industrial production, the grade of precipitated lead cannot meet the requirements of the national standard, and the crude lead cannot meet the production needs. The effect of improving the grade of metal content

Inactive Publication Date: 2013-09-11
湖南省桂阳银星有色冶炼有限公司
View PDF4 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The electrode potentials of bismuth and lead in crude lead are relatively close. When the bismuth content in the anode plate is high, the grade of the precipitated lead Bi obtained by electrolysis exceeds the requirements of the national standard 1# lead ingot, and it is necessary to match a part of the precipitated lead with low-grade Bi content. Melting and casting in a lead melting pot can me...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for electrolyzing high-content low-grade lead bullion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Contain copper, antimony, bismuth and other high-rich and low-grade crude lead, melt and stir in a pot to remove copper, remove copper-containing scum, add alkali to make slag to remove arsenic and tin, measure the temperature of the lead liquid, and control At 420 ℃ ~ 450 ℃, the lead liquid is poured into the anode plate casting machine through the lead pump to cast the anode plate. The metal grades of the anode plate are: Pb: 88.05%, Ag: 2653g / t, Au: 2g / t, Cu : 0.11%, Bi: 5.93%, Sn: 0.14%, Sb: 4.66%, As: 0.83%; put the anode plate into the electrolytic cell for 72h electrolysis, the cathode lead is taken out of the water, and the precipitated lead and lead metals are precipitated The grades are: Pb: 99.96258%, Ag: 0.00008%, Cu: 0.00022%, Bi: 0.00274%, Sn: 0.00574%, Sb: 0.02826%, As: 0.00021%, Fe: 0.00011%; At this time, the grades of each metal in the anode slime are: Pb: 17.49%, Ag: 27514g / t, Cu: 1.01%, Bi: 15.83%, Sb: 41.43%, As: 6.73%, Au: 24.54g / t, Te ...

Embodiment 2

[0025] Example 2: Use high-rich and low-grade crude lead containing copper, antimony, bismuth, etc., to melt and stir in a pot to remove copper, remove copper-containing scum, add alkali to make slag to remove arsenic and tin, measure the temperature of molten lead, and control At 420 ℃ ~ 450 ℃, the lead liquid is poured into the anode plate casting machine through the lead pump to cast the anode plate. The metal grades of the anode plate are: Pb: 88.05%, Ag: 2750g / t, Au: 2g / t, Cu : 0.08%, Bi: 4.85%, Sn: 0.05%, Sb: 5.66%, As: 1.02%; put the anode plate into the electrolytic cell for 72h electrolysis, the cathode lead is taken out of the water, and the precipitated lead and lead metals are precipitated The grades are: Pb: 99.97738%, Ag: 0.00004%, Cu: 0.00022%, Bi: 0.00119%, Sn: 0.00451%, Sb: 0.01636%, As: 0.00015%, Fe: 0.00012%; At this time, the grades of each metal in the anode slime are: Pb: 18.07%, Ag: 27684g / t, Cu: 1.08%, Bi: 16.06%, Sb: 41.89%, As: 7.1%, Au: 24.68g / t, Te ...

Embodiment 3

[0026]Example 3: Contain copper, antimony, bismuth and other high-rich and low-grade crude lead, melt and stir in a pot to remove copper, remove copper-containing scum, add alkali to make slag to remove arsenic and tin, measure the temperature of molten lead, and control At 420 ℃ ~ 450 ℃, the lead liquid is poured into the anode plate casting machine through the lead pump to cast the anode plate. The metal grades of the anode plate are: Pb: 88.8%, Ag: 2785g / t, Au: 2g / t, Cu : 0.07%, Bi: 5.12%, Sn: 0.21%, Sb: 4.65%, As: 0.86%; put the anode plate in the electrolytic cell for 72h electrolysis, the cathode lead is taken out of the water, and the precipitated lead and lead metals are precipitated The grades are: Pb: 99.96525%, Ag: 0.00003%, Cu: 0.00012%, Bi: 0.00391%, Sn: 0.00522%, Sb: 0.02514%, As: 0.00018%, Fe: 0.00012%; At this time, the grades of each metal in the anode slime are: Pb: 17.16%, Ag: 27172g / t, Cu: 0.92%, Bi: 16.56%, Sb: 41.85%, As: 7.37%, Au: 23.78g / t, Te : 0.13%....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method for electrolyzing high-content low-grade lead bullion. The method comprises the following steps of melting the high-content low-grade lead bullion containing copper, antimony and bismuth into a pot to be stirred for removing the copper, thoroughly removing the copper-containing floating slag, adding alkali to remove arsenic and tin, pumping the lead liquid into an anode plate casting machine to be cast into an anode plate, reasonably matching the use amount of the combined additives to electrolyze the anode plate and the electrolyte according to the chemical components of the anode plate and the chemical components of the electrolyte, extracting cathode lead, washing the cathode lead with water to remove the electrolyte on the surface of the lead and thus obtaining the precipitated lead, casting the refined precipitated lead to obtain lead pig with the quality reaching the No.1 national standard, gathering the antimony, bismuth, copper, gold and silver onto the anode plate to form anode paste, and further comprehensively recovering the antimony, bismuth, copper, gold and silver in balance. By adopting the method, the lead bullion with high contents of copper, antimony and bismuth can be electrolyzed into the qualified precipitated lead in one step, so that the secondary electrolysis cost can be reduced, and the enriched metal grade in the anode paste can be improved.

Description

technical field [0001] The invention relates to a method for smelting nonferrous metals, in particular to an electrolysis method for high-enrichment and low-grade crude lead. Background technique [0002] The purity of crude lead produced by crude lead smelting is in the range of 96%-99%, and the remaining 1%-4% is precious metals such as gold, silver, selenium, tellurium and other rare metals and impurities such as copper, nickel, selenium, antimony and bismuth. The value of precious metals sometimes exceeds the value of lead and must be extracted, while the impurity components have a harmful effect on the ductility and corrosion resistance of lead and must be removed, so crude lead must be refined. [0003] There are two types of crude lead refining: fire refining and electrolytic refining. Lead smelters in China and Japan generally use electrolytic refining, while other countries in the world use fire refining. The fire refining equipment and process are simple, the const...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C25C1/18C22B13/06C22B7/00
CPCY02P10/20
Inventor 谢志刚尹升周彪
Owner 湖南省桂阳银星有色冶炼有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap