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Comprehensive treatment process of waste gold-bearing activated carbon

A comprehensive treatment and activated carbon technology, applied in the direction of improving process efficiency, can solve problems such as low efficiency, weakened ability to absorb gold and silver, and incomplete treatment, so as to increase economic benefits, improve comprehensive utilization of resources, and improve gold and silver recovery. rate effect

Inactive Publication Date: 2012-04-11
SHANDONG GUODA GOLD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, in the gold smelting industry, roasting and cyanidation of gold concentrates are used to realize flue gas acid production, calcination acid leaching, and cyanidation to extract gold. Contains a small amount of gold and silver, etc.; the tailings produced by cyanidation leaching of gold concentrates suitable for direct cyanidation are rich in lead, zinc, and copper, etc., and then lead, zinc, and copper are separated to obtain lead concentrates, zinc concentrates, and copper concentrates. After copper selection, the liquid after copper selection contains a small amount of gold and silver, etc.; the acid leaching liquid produced by wet pre-impurity removal of gold mud produced by cyanidation leaching also contains a small amount of gold and silver; Adsorption, desorption, electrowinning, recovery of gold and silver, activation of gold-loaded carbon, and recycling. After repeated cycles, its activity decreases and its ability to adsorb gold and silver is weakened. The waste gold-loaded activated carbon must be treated. Traditional Waste gold-laden activated carbon is mostly treated by incineration and smelting, which has the defects of incomplete treatment and low efficiency.

Method used

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  • Comprehensive treatment process of waste gold-bearing activated carbon

Examples

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Effect test

Embodiment 1

[0021] The technique of the comprehensive treatment of waste gold-loaded activated carbon of the present embodiment,

[0022] The process for the comprehensive treatment of waste gold-loaded activated carbon comprises the following steps:

[0023] 1. Use a charcoal furnace to incinerate to remove charcoal and enrich gold and silver

[0024] Put an appropriate amount of gold-loaded activated carbon containing 200 g / t of gold and 1000 g / t of silver into the charcoal furnace in batches. The temperature is controlled at 800 ° C and fully incinerated for 2.5 hours to enrich the gold and silver in the slag;

[0025] 2. Finely grind the slag and treat it on a shaking table

[0026] The slag enriched in gold and silver is finely ground to a fineness of 150 meshes, and added to a shaker for grading treatment to obtain shaker concentrate and shaker tailings rich in gold and silver. The shaker concentrate contains 1000 g / t of gold, The silver content is 7000 g / t, and the gold content o...

Embodiment 2

[0036] A process for the comprehensive treatment of spent gold-loaded activated carbon, comprising the following steps:

[0037] 1. Use a charcoal furnace to incinerate to remove charcoal and enrich gold and silver

[0038] Put an appropriate amount of gold-loaded activated carbon containing 250 g / t gold and 1500 g / t silver into the charcoal furnace in batches, and control the temperature at 880°C, and fully incinerate for 3 hours to enrich the gold and silver in the slag;

[0039] 2. Finely grind the slag and treat it on a shaking table

[0040] The slag enriched in gold and silver is finely ground to a fineness of 200 meshes, and added to a shaker for grading treatment to obtain shaker concentrate and shaker tailings rich in gold and silver. The shaker concentrate contains 1300 g / t of gold. The silver content is 7500 g / t, and the gold content of the shaker tailings is 550 g / t;

[0041] 3. Shaking table concentrate batching smelting treatment

[0042] The shaker concentrat...

Embodiment 3

[0050] A process for the comprehensive treatment of spent gold-loaded activated carbon, comprising the following steps:

[0051] 1. Use a charcoal furnace to incinerate to remove charcoal and enrich gold and silver

[0052] Put an appropriate amount of waste gold-loaded activated carbon containing 300 g / t gold and 2000 g / t silver into the charcoal furnace in batches, control the temperature at 900°C, and fully incinerate for 3.5 hours to enrich the gold and silver in the slag;

[0053] 2. Finely grind the slag and treat it on a shaking table

[0054] The slag enriched in gold and silver is finely ground to a fineness of 300 meshes, and then added to a shaker for grading treatment to obtain a shaker concentrate and shaker tailings rich in gold and silver. The shaker concentrate contains 1500 g / t of gold. The silver content is 8000 g / t, and the gold content of the shaker tailings is 800 g / t;

[0055] 3. Shaking table concentrate batching smelting treatment

[0056]Dry the con...

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Abstract

The invention relates to a comprehensive treatment process of waste gold-bearing activated carbon, belonging to the technical field of the gold and silver comprehensive recovery of gold smelting wastewater and the gold-bearing carbon retreatment. The comprehensive treatment process comprises the following steps: 1) using a carbon- incinerating furnace to incinerate and remove carbon, enriching gold and silver; 2) burning the obtained slag to perform fine grinding and shaker treatment; 3) smelting the shaker concentrate burden; 4) treating pre-slag; 5) performing acid leaching to the shaker tailings; and 6) cyaniding the acid leaching cake. The comprehensive treatment process of the waste gold-bearing activated carbon fully applies the pyrometallurgical method, the hydrometallurgical process and the cyanide gold extraction process; and by adopting the comprehensive treatment process, the gold and silver in the waste gold-bearing activated carbon can be recycled farthest, the recovery rate of gold and silver can be increased, the comprehensive utilization effect of the resource can be increased and the economic benefit of the enterprise can be increased.

Description

technical field [0001] The invention relates to a process for comprehensive treatment of waste gold-loaded activated carbon, and belongs to the technical field of comprehensive recovery of gold and silver in gold smelting wastewater and gold-loaded carbon reprocessing. Background technique [0002] In recent years, in the gold smelting industry, roasting and cyanidation of gold concentrates are used to realize flue gas acid production, calcination acid leaching, and cyanidation to extract gold. Contains a small amount of gold and silver, etc.; the tailings produced by cyanidation leaching of gold concentrates suitable for direct cyanidation are rich in lead, zinc, and copper, etc., and then lead, zinc, and copper are separated to obtain lead concentrates, zinc concentrates, and copper concentrates. After copper selection, the liquid after copper selection contains a small amount of gold and silver, etc.; the acid leaching liquid produced by wet pre-impurity removal of gold m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B11/08
CPCY02P10/20
Inventor 吕寿明林清岩郭建东王天星
Owner SHANDONG GUODA GOLD
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