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

Treatment method of low-grade gold ore

A treatment method and low-grade technology, applied in the field of metallurgy, can solve the problems of high cost, impossibility of pre-granulation and desliming treatment, long cycle, etc., and achieve the effect of preventing decomposition, improving gold leaching efficiency, and short spraying cycle

Active Publication Date: 2016-06-15
YUNNAN GOLD MINING GRP
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has the disadvantages of high cost and long period, and many mines cannot carry out pre-granulation and desliming treatment due to conditions and cost constraints.

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
  • Treatment method of low-grade gold ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0055] The ore is a low-grade oxidized gold ore with a gold grade of 0.3-1g / t and a natural particle size of less than 20cm.

[0056] 1. Screening: to obtain nugget ore with an average particle size of 5.5 cm and powder gold ore with an average particle size of 0.5 cm;

[0057] 2. Heaping: Mix nugget and fine gold ore at a ratio of 3:1, and add lime to the ore at a ratio of 2.8-3.5 kg / ton. The ore blending requires uniform ore blending.

[0058] 3. Turning: Use an excavator to turn the pile, the depth is 2.5-3.5m, until the loose layer is reached, and the flatness of the top surface reaches the visual judgment without obvious unevenness.

[0059] 4. Pipe support: According to the requirements of spray intensity, the distance between two adjacent nozzles on the sprinkler device is determined to be 4m; the nozzles are perpendicular to the horizontal direction, and the spray coverage rate is determined to be 100%.

[0060] 5. Spraying: After the debugging of the spraying pipelin...

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for processing low-grade gold ore. The method comprises the following steps: sieving the gold ore to conveniently and respectively obtain gold ore blocks and pulverized gold ore; carrying out uniform ore heaping on gold ore blocks, pulverized gold ore and lime to conveniently form an ore heap; and uniformly spraying the ore heap with an alkaline cyanide solution. By the method for processing low-grade gold ore disclosed by the embodiment of the invention, pre-spraying and ore washing steps of the gold ore are not needed, pre-granulating and desliming steps are also not needed and the leaching efficiency of gold and the leaching rate of gold can be effectively increased.

Description

technical field [0001] The invention belongs to the field of metallurgy, in particular, the invention relates to a processing method of low-grade gold ore. Background technique [0002] Most of the existing techniques for heap leaching and spraying of oxidized gold ore are pre-spraying and washing the ore with a cyanide-free alkaline solution, and then spraying and leaching gold with a cyanide-containing solution after washing the ore. The purpose is to remove the water-soluble impurities in the ore before cyanide leaching gold, neutralize the acidic components in the ore, and increase the pH of the ore heap and the leaching solution to above 9.5, so as to prevent cyanide from being decomposed when spraying the cyanide-containing solution losses and pollute the environment. However, if the oxidized gold ore is pre-sprayed and washed in advance, which contains a large amount of fine ore or high-shale ore, because the clay in the ore will expand rapidly after being wetted by ...

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 Patents(China)
IPC IPC(8): C22B11/08
Inventor 张云林陈振雄李学强张勋李旭俊
Owner YUNNAN GOLD MINING GRP
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