Treatment method of cyanogen-containing tailing slurry

A treatment method, tailings technology, applied in filtration treatment, water/sewage treatment, metallurgical wastewater treatment, etc.

Pending Publication Date: 2018-06-12
CHANGCHUN GOLD RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a treatment method for cyanide-containing tailings pulp with high elution efficiency, less water c

Method used

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  • Treatment method of cyanogen-containing tailing slurry
  • Treatment method of cyanogen-containing tailing slurry
  • Treatment method of cyanogen-containing tailing slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The main pollutants in the solid phase of cyanide tailings slurry in a gold mine are 78.13mg / kg CNT, 52.45mg / kg CNf, 121.03mg / kg Cu, and 64.56mg / kg Zn.

[0030] Wherein No. 1 cyanide-containing tailings slag is tested according to the following method:

[0031] The cyanide-containing tailings slurry is pumped into the positive pressure filter, and the test device is as follows figure 1 As shown, twist the rotary valve to drive the movable cover plate to close the filter press chamber, open the air source and pass the air through the air inlet for press filtration, the pressure of the filter press chamber is 0.4Mpa, stop the ventilation until the filtrate does not flow out, turn on the water pump from the inlet Pump clean water into the water port for washing. The amount of water pumped in is 0.2 times the weight of the press filter cake. Turn on the air source and pass the air through the air inlet to perform press filtration and blow off. The pressure of the press cham...

Embodiment 2

[0040] The main pollutants in the solid phase of cyanide tailings slurry in a gold mine are 187.17mg / kg CNT, 165.68mg / kg CNf, 197.75mg / kg SCN-, and 253.15mg / kg Cu.

[0041] Wherein No. 1 cyanide-containing tailings slag is tested according to the following method:

[0042]Pump the cyanide-containing tailings slurry into the positive pressure filter, twist the rotary valve to drive the movable cover plate to close the pressure filter chamber, open the air source and pass the air through the air inlet for pressure filtration. The pressure of the filter pressure chamber is 0.4Mpa. Stop the ventilation until it flows out, turn on the water pump to pump the washing liquid from the water inlet (the composition is: sodium dodecylbenzenesulfonate 5mg / L, cyclodextrin 2mg / L, sodium silicate 2mg / L and calcium hydroxide 2mg / L) for water washing, the pumped water volume is 0.2 times the weight of the press filter cake, open the air source and pass the air through the air inlet to perform ...

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Abstract

The invention belongs to pollutant treatment methods in the field of environmental protection and particularly relates to a treatment method of cyanogen-containing tailing slurry. The method comprisesthe steps of positive pressure filtration, water washing, blowing-off, filtrate treatment and the like, and an integrated treatment process is formed. The method provided by the invention has the advantages that the defects of low elution efficiency, large water consumption and the like existing in traditional stirring and elution processes can be overcome, cyanides and valuable metals in the cyanogen-containing tailing slurry can be eluted and treated, harmless treatment of the cyanogen-containing tailing slurry can be realized, recovery of cyanogen and valuable metal elements in the tailingslurry can be realized, full utilization of water resources can be realized, and the method has the characteristics of high elution efficiency, low water consumption, good elution effect and broad application prospect.

Description

technical field [0001] The invention belongs to a method for treating pollutants in the field of environmental protection, in particular to a method for treating tailings pulp containing cyanide. Background technique [0002] Since most gold mines in my country have been using cyanidation gold extraction process, a large amount of cyanide-containing tailings slurry is produced in the gold production process. With the extension of the mining history, the accumulation of cyanide-containing tailings is increasing year by year, occupying a large amount of land. These tailings contain highly toxic substances-cyanide, which has become a common hazardous waste in gold mining enterprises. The anti-seepage treatment in the tailings pond is improper. Or when the maintenance and management are not timely, the cyanide in the cyanide tailings slag will infiltrate due to rain and pollute the surrounding environment and groundwater. As the country pays more and more attention to the field o...

Claims

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Application Information

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IPC IPC(8): C02F9/04C22B7/00C22B15/00C22B19/30C02F103/16
CPCC02F1/001C02F1/20C02F1/283C02F1/66C02F1/722C02F1/78C02F9/00C02F2103/16C22B7/006C22B15/0084C22B19/30Y02P10/20
Inventor 李哲浩刘强
Owner CHANGCHUN GOLD RES INST
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