Method for high-efficiently enriching gold and platinum metal from complex low-grade chlorine soaked slag

A technology of platinum group metals and chlorine leaching slag, which is applied in the direction of improving process efficiency, etc., can solve problems such as flying precious metals and elemental sulfur, difficulty in reprocessing desulfurization slag, and poor desulfurization effect, so as to achieve good comprehensive utilization effect and benefit Environmentally friendly and easy to transport

Active Publication Date: 2013-10-16
JINCHUAN GROUP LIMITED
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have the disadvantages of poor desulfurization effect, use of toxic reagents, easy to cause environmental pollution, and difficulties in reprocessing desulfurization slag, requiring pyrometallurgical treatment again, resulting in dispersion and loss of precious metals, and high processing costs
Therefore, the treatment of chlorine gas leaching slag has always been a difficult problem. Since there is no suitable

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 high-efficiently enriching gold and platinum metal from complex low-grade chlorine soaked slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The method for efficiently enriching gold and platinum group metals from chlorine gas leaching slag, the chemical composition of chlorine gas leaching slag is shown in Table 1, the chemical composition of chlorine gas leaching slag normal pressure preleaching slag is shown in Table 2, and the composition of one-stage desulfurization leaching slag is shown in Table 3. The chemical composition of the second-stage desulfurization leaching slag is shown in Table 4, the chemical composition of the pressurized oxidation leaching slag is shown in Table 5, the chemical composition of the desiliconization slag (precious metal concentrate) is shown in Table 6, and the chemical composition of the first-stage desulfurization leaching solution is shown in Table 7. The chemical composition of sodium sulfite product is shown in Table 8.

[0034] Table 1 Chemical composition of chlorine gas leaching residue

[0035] ;

[0036] Table 2 Chemical composition of atmospheric pressure...

Embodiment 2

[0051] The method for efficiently enriching gold and platinum group metals from chlorine gas leaching slag, the chemical composition of chlorine gas leaching slag is shown in Table 9, the chemical composition of chlorine gas leaching slag normal pressure preleaching slag is shown in Table 10, and the composition of one-stage desulfurization leaching slag is shown in Table 11. See Table 12 for the chemical composition of the second-stage desulfurization leaching slag, Table 13 for the chemical composition of the pressurized oxidation leaching slag, Table 14 for the chemical composition of the desiliconization slag (precious metal concentrate), and Table 15 for the chemical composition of the first-stage desulfurization leaching solution. The chemical composition of sodium sulfite product is shown in Table 16.

[0052] Table 9 Chemical composition of chlorine gas leaching residue

[0053] ;

[0054] Table 10 Chemical composition of atmospheric pressure preleaching slag

...

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

A method for high-efficiently enriching gold and platinum metal from complex low-grade chlorine soaked slag relates to the key technology development field of high-efficient processing of low-grade assisted mineral resource and separation and extraction of scarce and precious metal. Complex low-grade chlorine soaked slag is subjected to the processes of slurry washing, first-stage normal-pressure leaching desulfurating, second-stage normal-pressure leaching desulfurating, pressure leaching, silicon-removing, and solid-liquid separating, while controlling appropriate technology parameters such as solid-liquid ratio, leaching reaction temperature, leaching time, acidity, addition amount of desulfurizer at the same time. Finally the silicon removed slag is high-grade, high-qualified precious metal concentrate. Compared to conventional methods, the method for high-efficiently enriching gold and platinum metal from complex low-grade chlorine soaked slag has the advantages of simple technology, environmental-friendliness, no generation of toxic waste gas or waste slag during production process, no use of toxic reagents, and high recovery rate and enrichment ratio of precious metals such as gold and palladium. The grade of enriched precious metals reaches 9000 to 15000 g/t, the recovery rate of precious metals reaches 98% or more, which is convenient for connecting the separation and refine processes of precious metals.

Description

technical field [0001] A method for efficiently enriching gold and platinum group metals from complex low-grade chlorine leaching slag, which belongs to the field of rare and precious metal hydrometallurgy, that is, belongs to the resource cycle in the energy-saving and environmental protection industry of the "Twelfth Five-Year Plan" national strategic emerging industry development plan Utilizing new technologies for the comprehensive utilization of industrial solid waste - high-efficiency dressing and smelting of low-grade co-occurring mineral resources - the key technology development field of separation and extraction of rare and precious metals, involving a full hydrometallurgy, preparation of high-grade and high-quality precious metal concentrates and comprehensive utilization of sulfur method of the element. Background technique [0002] In the metallurgical process of extracting nickel and cobalt containing rare precious metals, especially copper-nickel sulfide ore, ...

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): C22B7/00C22B3/04C22B11/00C22B15/00C22B23/00
CPCY02P10/20
Inventor 钟清慎马玉天陈大林孙以升黄虎军叶理尧张燕蔡静陈云峰
Owner JINCHUAN GROUP LIMITED
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