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Method for recovering gold from gold-containing waste charcoal powder

A technology for recovering gold and carbon powder, applied in the field of gold recovery of gold-containing waste carbon powder, can solve the problem of high residual carbon rate

Inactive Publication Date: 2015-01-14
福建金山黄金冶炼有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for roasting gold-containing waste charcoal powder, which can solve the problem of high carbon residue rate in the direct roasting of charcoal powder fixed bed, and make charcoal powder calcined sand suitable for wet leaching

Method used

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  • Method for recovering gold from gold-containing waste charcoal powder
  • Method for recovering gold from gold-containing waste charcoal powder
  • Method for recovering gold from gold-containing waste charcoal powder

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Embodiment 1

[0021] The method for recovering gold from gold-containing waste charcoal powder that the present invention relates to, the specific implementation method is:

[0022] (1) Before the charcoal powder is roasted, use the charcoal powder with an appropriate amount of yellow mud, an appropriate amount of flour, and an appropriate amount of soda ash in a ratio of 1:1:0.5:40 (flour: yellow mud: soda ash: scrapped gold-loaded charcoal powder) Mix the ingredients by cone method.

[0023] (2) After the batching is completed, put a small amount of charge into the furnace several times, and cover the furnace charge with 5-7cm of the open flame for each charge for roasting.

[0024] (3) After the furnace is fully roasted, stop feeding, continue blasting, and leave the furnace after the furnace charge is cooled.

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Abstract

The invention relates to a method for recovering gold from gold-containing waste charcoal powder. The method is mainly used for recovery of gold in gold-containing waste charcoal powder. Through one-step calcination, furnace charge has charcoal residue content less than 0.2%, forms a spongy porous calcining structure and satisfies follow-up cyanidation leaching process requirements.

Description

1. Technical field [0001] The invention relates to a method for roasting gold-containing waste carbon powder in the gold smelting industry, which is mainly applied to gold recovery of gold-containing waste carbon powder. 2. Background technology [0002] Gold beneficiation and smelting enterprises will produce powdered carbon and scrap carbon during the production process. Due to poor adsorption and analysis performance, they cannot return to the cyanide carbon adsorption system to extract gold. These waste carbon powders contain precious metals, which must be extracted and recycled. The waste charcoal powder is mainly extracted by the "roasting-smelting" process to extract the precious metals. Due to the problems of long process flow, high cost and low recovery rate in pyromelting, the development of the "roasting-cyanidation" process has become a carbon leaching process. The common subject of gold smelting enterprises. [0003] At present, the method of roasting waste cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B1/02C22B11/00
CPCY02P10/20
Inventor 廖元杭张新振许辉标黎志栋申开榜车贤袁忠文吴城林
Owner 福建金山黄金冶炼有限公司
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