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

Gold leaching process of thiosulfate gold leaching system for replacing ammonia water by using cholamine

A technology of thiosulfate and copper sulfate pentahydrate is applied in the fields of environment and hydrometallurgy, and can solve the problems of large consumption of thiosulfate, high treatment efficiency, environmental pollution of ammonia water, etc. Fast, Inexpensive Effects

Inactive Publication Date: 2016-05-11
FUZHOU UNIV
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves both the large consumption of thiosulfate and the environmental pollution of ammonia water, simplifies the gold leaching process, and is suitable for use in natural environments; the cholamine used in it has low cost and high treatment efficiency, and has good performance in gold leaching Economic and environmental benefits, can be well put into large-scale industrial applications

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
  • Gold leaching process of thiosulfate gold leaching system for replacing ammonia water by using cholamine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Ball mill the gold ore until the ore fineness is -200 mesh, add deionized water to adjust the slurry concentration to 30wt%; add copper sulfate pentahydrate, ammonium thiosulfate, and cholamine to 0.03mol / L, 0.3mol / L, and 0.6mol respectively / L, the stirring speed is 300r / min, leaching for 24h, the leaching rate of gold increases to 77.9%, and the consumption of ammonium thiosulfate decreases to 22.3kg / t.

Embodiment 2

[0027] Ball mill the gold ore until the ore fineness is -200 mesh, add deionized water to adjust the pulp concentration to 30wt%; add copper sulfate pentahydrate, ammonium thiosulfate, and cholamine to 0.03mol / L, 0.3mol / L, and 0.8mol respectively / L, stirring speed is 300r / min, leaching for 24h, the leaching rate of gold is increased to 79.6%, and the consumption of ammonium thiosulfate is reduced to 21.6kg / t.

Embodiment 3

[0029] Ball mill the gold ore until the ore fineness is -200 mesh, add deionized water to adjust the pulp concentration to 30wt%; add copper sulfate pentahydrate, ammonium thiosulfate, and cholamine to 0.03mol / L, 0.3mol / L, and 1mol / L respectively L, the stirring speed is 300r / min, leaching for 24h, the leaching rate of gold is increased to 81.1%, and the consumption of ammonium thiosulfate is reduced to 19.9kg / t.

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 discloses a gold leaching process of a thiosulfate gold leaching system for replacing ammonia water by using cholamine, belongs to the field of wet metallurgy technologies, and solves such problems as low leaching rate and environmental protection problem of ammonia water in nowadays popular thiosulfate gold leaching method in a targeted manner. The gold leaching process uses thiosulfate, cholamine and copper sulfate pentahydrate leaching liquid for stirring and leaching gold ores; the leaching rate can reach 85%; the method is simple; the raw materials are easily obtained; the cost is low; and the whole gold leaching process has no acute toxicant influence, has the environmental benefit, and can be preferably put in large-scale application.

Description

technical field [0001] The invention belongs to the field of environment and hydrometallurgy, and in particular relates to a gold leaching process of a thiosulfate gold leaching system in which ammonia water is replaced by cholamine. Background technique [0002] Gold (Au) is the first metal recognized and utilized by human beings. It can not only be used as a national resource reserve and a private collection and savings material, but also has more and more extensive industrial applications. [0003] The cyanidation gold leaching process, which has been around for more than 100 years, has always occupied a dominant position in the gold process. However, there are many disadvantages in the cyanidation method, such as a long gold leaching process, a slow gold extraction speed, and cyanide is highly toxic, polluting the environment and so on. Thiosulfuric acid method is a gold leaching process with high speed, non-toxicity, low price, environmental friendliness and high gold ...

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): C22B3/16C22B11/00
CPCC22B3/1625C22B11/04Y02P10/20
Inventor 于岩吴宇锋李杰庄国鑫
Owner FUZHOU UNIV
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