Method for extracting copper, gold and silver from copper oxide ore

A technology for oxidizing copper ore and ore, applied in the field of copper concentrate, can solve the problems of long production line and high cost

Inactive Publication Date: 2014-08-06
谷亮
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are disadvantages such as

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 extracting copper, gold and silver from copper oxide ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] A specific embodiment of the present invention is to use a jaw crusher to crush a low-grade copper oxide ore containing 2.7 grams / ton of gold, 52 grams / ton of silver, and 1.2% copper, and the particle size of the crushed ore is below 50mm. The crushed ore is then ground into mineral powder with a particle size of 0.05-0.10mm by the ore grinding equipment, and transported to the leaching tank. Then the mixed solution of ammoniacal liquor, ammonium bicarbonate and sodium thiosulfate (the solubility of ammonia water is 2%, the solubility of ammonium bicarbonate is 3%, sodium thiosulfate 5%) prepared in the mixing tank is used as ore leaching agent, The leaching liquid is input into the leaching tank, and the leaching liquid reacts with the ore powder, the liquid-solid volume ratio is 2:1, and the reaction temperature is 60°C. The resulting copper, gold and silver complex solution permeates to the bottom of the leaching tank by its own weight, flows out from the drain pipe ...

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 extracting copper, gold and silver from copper oxide ore uses a process comprising ore powder leaching, filtering and copper, gold and silver precipitation to produce a copper concentrate containing gold and silver, and is especially suitable for treating low-grade copper oxide containing silver and gold and having copper content of 0.2-5%. The method is as below: first the ore is prepared into an ore powder; then a mixed solution of ammonia, ammonium bicarbonate and sodium thiosulfate or a mixed solution of sodium hydroxide, ammonium bicarbonate and sodium thiosulfate as a leaching agent reacts with the ore powder at 10-80 DEG C, so that the copper, gold and silver in the ore enter into the solution in the form of copper, gold and silver complexes, thereby realizing separation of copper, gold and silver from impurities; and then one or more selected from sulfide ammonia, sodium sulfide and potassium sulfide are used as a precipitating agent for copper, gold and silver precipitation gold, so as to produce the copper concentrate containing gold and silver, the copper concentrate containing gold and silver is filtered and dried to obtain the copper concentrate product containing gold and silver products, and the filtrate returns to a leaching tank for recycling.

Description

technical field [0001] The present invention relates to a method for extracting copper, gold and silver from copper oxide ore, which adopts the process of fine ore-leaching-filtering-precipitation of copper, gold and silver to produce copper concentrate powder containing gold and silver, which is especially suitable for processing copper powder containing Copper oxide ore with 0.2-5% copper, 0.5-10 g / ton gold, and 5-200 g / ton silver. The method belongs to the field of chemical beneficiation engineering in hydrometallurgy. [0002] Copper fine powder is one of the main raw materials for the production of metal copper. The main raw material for copper production in my country - copper fine powder is produced by flotation process with copper sulfide ore. However, with the massive development of primary ore, mineral resources are becoming increasingly tense. At the same time, in the process of mining copper sulfide ore and high-grade copper oxide ore, a large amount of low-grade c...

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): C22B3/12C22B3/44C22B15/00C22B11/00
Inventor 谷亮
Owner 谷亮
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