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

Method capable of reducing grade of gold in crude antimony leaching solution

A technology of leaching solution and gold grade, which is applied in the direction of process efficiency improvement, photographic process, instruments, etc., can solve the problems of low antimony quality and difficult gold recovery, etc., and achieve the effect of reduced gold content, low operating cost, and simple and easy-to-control process

Active Publication Date: 2019-06-14
SHANDONG HUMON SMELTING
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for reducing the gold grade in the leaching solution of antimony, which solves the problem that sodium sulfide and sodium hydroxide are used as leaching agents in the background technology to leach antimony-gold concentrate. Under the action of antimony, it will be leached together with antimony and enter the rich solution containing antimony, which will cause problems such as difficulty in gold recovery and lower quality of antimony.

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 capable of reducing grade of gold in crude antimony leaching solution
  • Method capable of reducing grade of gold in crude antimony leaching solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The main components of the antimony-containing raw ore and the antimony-gold concentrate obtained after flotation are shown in Table 1:

[0019] Table 1 Composition analysis of antimony-containing ore and antimony-gold concentrate

[0020] Take the following process steps:

[0021] a Mineral dressing: The flotation conditions and dosage of antimony raw ore are raw ore particle size-200 mesh ratio ≥ 80%, isoamyl xanthate 50 g / t, ethyl xanthate 150 g / t, lead nitrate 150 g / t t, 2# oil 50 g / t; flotation to produce antimony gold concentrate;

[0022] b Leaching: add zinc powder at a rate of 1 kg per ton of antimony-gold concentrate (dry basis), and use high-concentration sodium hydroxide and low-concentration sodium sulfide for leaching in a sealed reaction kettle filled with nitrogen; sodium hydroxide The concentration is 200 g / L, the concentration of sodium sulfide is 30 g / L, the liquid-solid ratio is 1:1, and the leaching temperature is 60 ℃. After stirring and leachi...

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 capable of reducing the grade of gold in a crude antimony leaching solution, which comprises the following process steps: performing floatation on raw ore to obtain antimony-gold concentrate; adding a certain amount of zinc powder into the antimony-gold concentrate; isolating the oxygen by filling the leachate or filling a reactor with nitrogen or inert gas and sealing the reactor; leaching antimony from the antimony-gold concentrate by high concentration sodium hydroxide and low concentration sodium sulfide to obtain antimony-rich solution and leaching residue;after the leaching residue is washed twice, recovering other valuable metals by a pyrometallurgical system; and performing membrane-free electrodeposition on the antimony-rich solution to obtain crude antimony. In a condition of isolating the oxygen, high concentration sodium hydroxide and low concentration sodium sulfide are adopted for leaching, and zinc powder is added to play a role in protecting, thereby effectively reducing the leaching of gold in the antimony-gold concentrate.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metals, and in particular relates to a method for reducing the gold grade in a leach solution of antimony. Background technique [0002] In non-ferrous metallurgy, antimony-gold concentrate is often used as the raw material for refining gold and antimony. At present, the treatment of antimony-gold concentrate usually adopts the method of alkaline leaching and electrowinning antimony to separate gold and antimony, and recover antimony; then use fire method or wet process to recover valuable metals such as gold and silver. In the alkaline leaching process, sodium sulfide and sodium hydroxide are used as leaching agents to leach antimony-gold concentrate; gold will be leached together with antimony under the action of polysulfides in a strong alkaline environment and enter the antimony-containing rich solution , causing problems such as difficulty in gold recovery and lower quality of antimony, 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
Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/12C22B11/00C22B11/02C22B30/02C25C1/22
CPCY02P10/20
Inventor 曲胜利张俊峰王元王雷宋健伟初长青王洪磊
Owner SHANDONG HUMON SMELTING
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