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

Method for conducting bacterial oxidation treatment on gold tailings and recycling gold in gold tailings through cyaniding

A technology for bacterial oxidation and gold tailings, applied in the direction of improving process efficiency, can solve the problem of little research on comprehensive recovery and utilization of tailings resources, and achieve the effects of easy bacterial oxidation, simple operation, and reduction of environmental risks.

Inactive Publication Date: 2017-08-04
西北有色地质矿业集团有限公司 +1
View PDF9 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the microbial oxidation method is mainly used to oxidize the concentrate and raw ore of refractory gold ore, but there are few studies on the comprehensive recovery and utilization of tailings 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
  • Method for conducting bacterial oxidation treatment on gold tailings and recycling gold in gold tailings through cyaniding
  • Method for conducting bacterial oxidation treatment on gold tailings and recycling gold in gold tailings through cyaniding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The invention provides a method for bacteria oxidation treatment of gold tailings-cyanidation recovery of gold in the tailings, comprising the following steps:

[0048] Step 1, pretreatment of gold tailings: the tailings collected from the gold tailings pond do not need to be ground, and are directly washed with tap water for 2 to 4 times, and then the washed gold tailings are soaked in dilute sulfuric acid with a pH of 2 In the solution for 12 to 36 hours, the pretreated gold tailings are obtained and set aside;

[0049] Step 2, the selection of original strains: put the acid mine mud water and 9K culture medium collected from the gold tailing pond into the triangular flask sterilized by an autoclave at a volume ratio of 1:10, and then put Cultivate in a shaker at a temperature of 30-55°C, fill with air and stir, and the air volume is 0.2m 3 / h, the rotation speed of the shaking table is 180rpm, after 7 days of cultivation, select the culture flask whose color changes...

Embodiment 2

[0061] The invention provides a method for bacteria oxidation treatment of gold tailings-cyanidation recovery of gold in the tailings, comprising the following steps:

[0062] Step 1, pretreatment of gold tailings: the tailings collected from the gold tailings pond do not need to be ground, and are directly washed with tap water for 2 to 4 times, and then the washed gold tailings are soaked in dilute sulfuric acid with a pH of 2 In the solution for 12 to 36 hours, the pretreated gold tailings are obtained and set aside;

[0063] Step 2, the selection of original strains: put the acid mine mud water and 9K culture medium collected from the gold tailing pond into the triangular flask sterilized by an autoclave at a volume ratio of 1:10, and then put Cultivate in a shaker at a temperature of 30-55°C, fill with air and stir, and the air volume is 0.2m 3 / h, the rotation speed of the shaking table is 180rpm, after 7 days of cultivation, select the culture flask whose color changes...

Embodiment 3

[0075] The invention provides a method for bacteria oxidation treatment of gold tailings-cyanidation recovery of gold in the tailings, comprising the following steps:

[0076] Step 1, pretreatment of gold tailings: the tailings collected from the gold tailings pond do not need to be ground, and are directly washed with tap water for 2 to 4 times, and then the washed gold tailings are soaked in dilute sulfuric acid with a pH of 2 In the solution for 12 to 36 hours, the pretreated gold tailings are obtained and set aside;

[0077] Step 2, the selection of original strains: put the acid mine mud water and 9K culture medium collected from the gold tailing pond into the triangular flask sterilized by an autoclave at a volume ratio of 1:10, and then put Cultivate in a shaker at a temperature of 30-55°C, fill with air and stir, and the air volume is 0.2m 3 / h, the rotation speed of the shaking table is 180rpm, after 7 days of cultivation, select the culture flask whose color changes...

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 belongs to the technical application field of gold tailings resource comprehensive utilization, and particularly relates to a method for conducting bacterial oxidation treatment on gold tailings and recycling gold in the gold tailings through cyaniding. The method comprises the following steps that 1, the gold tailings are subjected to pretreatment including washing and acid soaking; 2, breading of original bacteria is conducted; 3, the original bacteria are acclimatized; 4, oxidation treatment is conducted on the gold tailings through the acclimatized bacteria; and 5, cyaniding gold extraction is conducted by adding sodium cyanide, and golden liquid is obtained. According to the method, the gold tailings are subjected to washing, acid soaking and bacterial oxidation treatment, and then subjected to cyanide leaching, the gold leaching rate is substantially increased and reaches 85% or above; and in addition, operation is easy, the cost is low, the environmentally friendly effect is achieved, the economical benefits are remarkable, the valence gold in the gold tailings can be effectively recycled, and an economical and environment-friendly win-win situation is created.

Description

technical field [0001] The invention belongs to the technical application field of comprehensive utilization of gold tailings resources, and in particular relates to a method for bacterial oxidation treatment of gold tailings-cyanidation recovery of gold in the tailings. Background technique [0002] my country is rich in gold ore resources, but there are few rich ore, many lean ore, few single mines, and many associated mines. With the increase of mining scale, the number of gold tailings has increased sharply. The land also pollutes the environment and has potential safety hazards. However, gold tailings contain valuable components and are potential secondary resources. The tailings in the gold tailings pool are very fine in size, and the valuable metals in them are easy to recover. The comprehensive recovery and utilization of gold tailings resources has become an important issue for the sustainable development of the current mine economy. The research work in this field ...

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): C22B3/18C22B11/00
CPCC22B3/18C22B11/04Y02P10/20
Inventor 李日升冯玉怀兰新哲管婧王瑞廷翟旭东靳建平
Owner 西北有色地质矿业集团有限公司
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