Method of extracting gold tail slag from arsenic containing aurin ore then extracting gold and silver

A gold concentrate, gold and silver technology, applied in the field of gold and silver extraction of precious metal smelting, can solve the problems of waste, gold and silver not being recycled, and achieve the effect of improving the gold and silver recovery rate

Inactive Publication Date: 2007-01-31
SHANDONG GUODA GOLD
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thereby the gold and silver in the cyanidation tailings cannot be recycled, causing certain waste

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0012] The method of extracting gold and silver from arsenic-containing gold concentrate by extracting gold tailings is implemented in a two-stage boiling roasting system with an annual processing capacity of 150 tons of arsenic-containing gold concentrate. The raw ore composition is about Au50g / t, Ag135g / t, S> 20%, As3.5% arsenic-containing gold concentrate, carry out two-stage boiling roasting, control the temperature of the reduction furnace at 550°C, and the excess air coefficient of 0.8; control the temperature of the oxidation roaster at 620°C, and the excess air coefficient of 1.2; adjust the acid leaching pH = 1~2, after solid-liquid separation, water washing and other processes, the slag is cyanided to extract gold and silver, the concentration of sodium cyanide is 8-10 / 10,000; the removal rates of carbon, arsenic and sulfur can reach 97%, 88% respectively % and more than 86%, the recovery rate of gold and silver reaches 90% and more than 73% respectively.

[0013] Th...

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 present invention relates to a method for extracting gold tailings from arsenical glod headings and further extracting gold and silver. Said extraction method includes the following steps: 1), enriching cyanogens dregs which are obtained after the arsenical gold headings are smelted by cyanidation process and whose gold and silver are recovered, pressing the cyanogens dregs into brick block; and 2), adding the cyanogens dregs enriched brick block into a copper smelting furnace and further recovering noble metals of gold and silver and copper.

Description

1. Technical field [0001] The invention relates to a method for extracting gold and silver from refractory gold concentrates, and belongs to the technical field of gold and silver extraction methods for precious metal smelting. 2. Background technology [0002] At present, in the field of gold smelting, after arsenic-containing refractory gold concentrate is pretreated to remove arsenic, and cyanide technology is used to smelt and recover gold and silver, the content of gold and silver in the cyanide tailings is still 2-4g / t, generally Gold and silver are no longer recovered, and after being dehydrated by a filter press, they are sold as iron-containing raw materials to make cement. Thereby the gold and silver in the cyanidation tailings cannot be recycled, causing certain waste. 3. Contents of the invention [0003] The object of the present invention is to provide a method for extracting gold tailings from arsenic-containing gold concentrate and then extracting gold and...

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): C22B11/00C22B7/04
Inventor 徐永祥吕寿明苑兆金刘占林尹瑞学孙浩飞温方炳曹永超路玉国
Owner SHANDONG GUODA GOLD
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