Supercharge Your Innovation With Domain-Expert AI Agents!

Method for utilizing waste cathode carbon block in aluminum electrolytic bath to extract copper cobalt in copper converter slag

A technology of waste cathode carbon blocks and copper converter slag, which is applied in the direction of improving process efficiency, can solve the problems of green resource utilization without waste cathode carbon blocks, high cost, and non-recyclable utilization, etc., to achieve the elimination of leaching toxicity, effective Good for separation and improved recovery

Inactive Publication Date: 2019-04-12
平罗县中兴碳素有限公司 +1
View PDF12 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the carbon products and electrolytes obtained by flotation contain a large amount of impurities, and the wastewater pollution in the treatment process is serious
[0008] None of the above technologies has truly realized the comprehensive utilization of waste cathode carbon blocks for green resources, and some technologies still have problems such as poor treatment effect, pollution, non-recyclability, and high cost during the treatment process, and have not been applied in industrial production. Therefore, it is urgently needed Development of a green resource utilization technology for aluminum electrolysis waste cathode carbon blocks

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] After the waste cathode carbon block, copper converter slag, sulfide and lime are broken into 10-50mm particle size materials, take 200g of copper converter slag, 80g of sulfide agent, 16g of waste cathode carbon block and 10g of limestone, and fully mix them into a corundum crucible Put it in a muffle furnace for heating, firstly heat the raw material from room temperature to 1200°C at a heating rate of 5°C / min, then heat it to 1400°C at a heating rate of 3°C / min, and keep it warm for two hours after reaching 1400°C. The depleted slag is separated from the cobalt matte to recover copper and cobalt. The recovery rate of copper is 95.52%, and the recovery rate of cobalt is 91.40%.

Embodiment 2

[0027] After the waste cathode carbon block, copper converter slag, vulcanizing agent and limestone are crushed into 10-50mm particle size materials, take 200g of copper converter slag, 80g of vulcanizing agent, 24g of spent cathode carbon block and 15g of limestone, and fully mix them into a corundum crucible Put it in a muffle furnace for heating, firstly heat the raw material from room temperature to 1200°C at a heating rate of 5°C / min, then heat it to 1400°C at a heating rate of 3°C / min, and keep it warm for two hours after reaching 1400°C. The depleted slag is separated from the cobalt matte to recover copper and cobalt. The recovery rate of copper is 98.26%, and the recovery rate of cobalt is 97.88%.

Embodiment 3

[0029] After the waste cathode carbon block, copper converter slag, vulcanizing agent and limestone are crushed into 10-50mm particle size materials, take 200g of copper converter slag, 80g of vulcanizing agent, 32g of waste cathode carbon block and 15g of limestone, and fully mix them into a corundum crucible Put it in a muffle furnace for heating, firstly heat the raw material from room temperature to 1200°C at a heating rate of 5°C / min, then heat it to 1400°C at a heating rate of 3°C / min, and keep it warm for two hours after reaching 1400°C. The depleted slag is separated from the cobalt matte to recover copper and cobalt. The recovery rate of copper is 99.45%, and the recovery rate of cobalt is 99.74%.

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 provides a method for utilizing a waste cathode carbon block in an aluminum electrolytic bath to extract copper cobalt in copper converter slag and relates to an aluminum industry solidwaste resource utilizing and smelting method for utilizing aluminum electrolytic industry solid waste cathode carbon block to extract the copper cobalt in the copper converter slag. The method is characterized in that according to the extraction process, the waste cathode carbon block serves as a reducing agent, high-sulfur high-iron copper concentrate serves as a vulcanizing agent, and the copperconverter slag is reduced, vulcanized and smelted to recover the copper cobalt. According to the method, the aluminum electrolytic waste cathode carbon block replaces reducing agents such as coke andlump coal in a traditional reduction vulcanization method, the carbon in the waste cathode carbon block is utilized as the reducing agent, meanwhile, fluoride salt contained in the waste cathode carbon block improves mobility of the high-temperature copper converter slag, separation of copper cobalt is benefitted, and the recovery rate of the copper cobalt is improved. Cyanide in the waste cathode carbon block is decomposed at a high temperature and reacts with limestone to generate furnace slag, the problem of pollution of cyanide and fluoride is solved, and the method has good economic environment benefits.

Description

technical field [0001] A method for extracting copper and cobalt in copper converter slag by using aluminum electrolytic cell waste cathode carbon block, which relates to an aluminum industry solid waste resource for extracting copper and cobalt in copper converter slag by using aluminum electrolysis industrial solid waste aluminum electrolytic cell waste cathode carbon block Chemical utilization and smelting methods. technical background [0002] In the past 20 years, my country's aluminum industry has developed rapidly. In 2017, my country's electrolytic aluminum production has reached 36 million tons, accounting for about 55.96% of the world's electrolytic aluminum production. With the substantial increase in the production of primary aluminum, the amount of waste cathode carbon blocks discharged after the overhaul of the electrolytic cell is also increasing year by year. The production of one ton of aluminum produces about 10-20Kg of waste cathode carbon blocks. In 2017,...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C22B1/00C22B15/00C22B23/02C25C3/08
CPCC22B1/005C22B7/001C22B7/04C22B15/0052C22B23/025C25C3/08Y02P10/20
Inventor 刘风琴洪爽王焕雪赵洪亮刘伟董文湘张拥军付小亮
Owner 平罗县中兴碳素有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More