Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Copper removal treatment method for waste material containing copper and selenium

A treatment method and decopper technology, which is applied in the field of copper smelting, can solve the problems of waste of resources, separation of selenium and impurities in lead filter cake, etc., and achieve the effects of improved recovery rate, stable process, and good copper leaching effect

Active Publication Date: 2018-12-21
YANGGU XIANGGUANG COPPER
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no suitable method to separate, enrich and recycle selenium from impurities in the lead filter cake, resulting in waste of resources

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
  • Copper removal treatment method for waste material containing copper and selenium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 1. Pre-dipping solution

[0047] Take 4t of selenium-containing material lead filter cake, main components: Cu 16.8%, Se 27.3%, As 1%, Pb 10%, Au39g / t, Ag 1030g / t, moisture 20%; crushed to 80 mesh. First configure 19m in the reaction vessel 3 Dilute sulfuric acid solution, wherein the concentration of sulfuric acid is 220g / L. After starting the stirring, add the above-mentioned lead filter cake, and at the same time add catalyst iron powder, the addition amount is 97kg. After stirring for half an hour, pump it to the autoclave, and the pre-soaking solution is at room temperature.

[0048] 2. High pressure leaching to remove copper and pressure filtration

[0049] After the obtained prepreg mixture enters the autoclave, it is first heated to 60°C, and then oxygen is introduced to gradually increase the pressure in the reactor. When the pressure reaches 1 MPa, the oxygen supply is stopped and the pressure is maintained for 8 hours. After the reaction is completed, the pr...

Embodiment 2

[0055] 1. Pre-dipping solution

[0056] Take 3.5t of selenium-containing material lead filter cake, main components: Cu 30%, Se 45%, As 1%, Pb 15%, Au 22g / t, Ag 1350g / t, moisture 25%; crushed to 100 mesh. First configure 16m in the reaction vessel 3 Dilute sulfuric acid solution, where the concentration of sulfuric acid is 240g / L. After starting the stirring, add the above-mentioned lead filter cake, and at the same time add catalyst iron powder, the addition amount is 82kg. After stirring for half an hour, pump it to the autoclave, and the pre-dipping solution is at room temperature.

[0057] 2. High pressure leaching to remove copper and pressure filtration

[0058] After the obtained prepreg mixture enters the autoclave, it is first heated to 70°C, and then oxygen is introduced to gradually increase the pressure in the reactor. When the pressure reaches 1MPa, the oxygen supply is stopped and the pressure is maintained for 8 hours. After the reaction is completed, the press...

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 copper removal treatment method for a waste material containing copper and selenium. The copper removal treatment method includes the following steps that S1, presoaking liquid is obtained by mixing the waste material containing the copper and the selenium, an iron-containing catalyst and dilute sulfuric acid; and S2, the presoaking liquid is subjected to high pressure leaching by using an oxidizing agent under the low temperature condition below 90 DEG C, then separation is carried out, and leaching slag containing silver and the selenium and leaching liquid containing the copper are obtained. According to the copper removal treatment method for the waste material containing the copper and the selenium, copper removal treatment is carried out on an industrial waste material, that is, a lead filter cake with the high copper and selenium content; according to the copper removal treatment method, the separation effect of precious metal such as the copper and theselenium is thorough, the cooper leaching effect is good, and the copper leaching rate is 96% or above; in addition, the selenium and other precious metal are all concentrated in the slag, the selenium, lead, gold and the silver can be recovered by entering a rare and expensive system, and the recovery rate of the precious metal is increased advantageously; and the overall process is stable and reliable, the copper removal treatment method for the waste material containing the copper and the selenium is suitable for large-scale industrial application, and the economic benefit is good.

Description

technical field [0001] The invention belongs to the technical field of copper smelting, and in particular relates to a copper-removing treatment method for waste materials containing copper and selenium. Background technique [0002] In the production of copper smelting, due to the physical and chemical effects such as the combustion of fuel, the carrying effect of airflow on materials, and the volatilization and oxidation of metals at high temperatures, a large amount of smoke and dust are inevitably produced. However, if the copper smelting flue gas is not purified and recovered, it will not only seriously pollute the atmosphere, but also be a serious waste of resources. [0003] Copper smelting flue gas treatment processes mainly include dry method and wet method; among them, during the washing process of copper smelting flue gas, some solid particles insoluble in dilute sulfuric acid will settle and be collected. The particles are waste materials containing copper and s...

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): C22B7/00C25C1/12C22B11/00C22B11/02C22B13/02C22B13/00C22B15/14C01B19/04
CPCC01B19/004C22B7/007C22B11/023C22B13/025C22B15/0071C25C1/12Y02P10/20
Inventor 陈一恒刘士祥董广刚魏栋
Owner YANGGU XIANGGUANG COPPER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com