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Treatment method of high-concentration cyanide and arsenic containing ore pulp in roasting and pretreating gold smelting plant

A treatment method and high-concentration technology, applied in chemical instruments and methods, sludge treatment, oxidation treatment of sludge, etc., can solve the problems of low pollutant removal rate, unstable treatment effect, and high operating cost, and achieve stable treatment effect. , The effect of significant environmental benefits and low operating costs

Inactive Publication Date: 2018-01-23
CHANGCHUN GOLD RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a treatment method for roasting pretreatment of high-concentration cyanide and arsenic pulp in a gold smelter to solve the existing problems of complex process, unstable treatment effect, low pollutant removal rate and high operating cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Include the following steps:

[0024] (1) Put the ore slurry containing high concentration of cyanide and high concentration of arsenic produced by the roasting pretreatment gold smelter into the first stirring tank, and overflow to the second stirring tank, the third stirring tank, the fourth stirring tank, the fifth stirring tank, Stirring tank six;

[0025] (2) Pass the high-concentration sulfur dioxide gas generated by roasting into the first stirring tank, the second stirring tank and the third stirring tank, and feed air at the bottom;

[0026] (3) Monitor the pH values ​​in Stirring Tank 1, Stirring Tank 2, and Stirring Tank 3;

[0027] (4) Add ferrous sulfate to stirring tank 4, stirring tank 5 and stirring tank 6;

[0028] (5) Monitor the pH value in stirring tank 4, stirring tank 5 and stirring tank 6;

[0029] (6) Press filter the pulp discharged from the mixing tank 6, and the clear liquid after the filter is reused in production;

[0030] (7) The tailin...

Embodiment 2

[0039] Include the following steps:

[0040] (1) Put the ore slurry containing high concentration of cyanide and high concentration of arsenic produced by the roasting pretreatment gold smelter into the first stirring tank, and overflow to the second stirring tank, the third stirring tank, the fourth stirring tank, the fifth stirring tank, Stirring tank six;

[0041] (2) Pass the high-concentration sulfur dioxide gas generated by roasting into the first stirring tank, the second stirring tank and the third stirring tank, and feed air at the bottom;

[0042] (3) Monitor the pH values ​​in Stirring Tank 1, Stirring Tank 2, and Stirring Tank 3;

[0043] (4) Add ferrous sulfate to stirring tank 4, stirring tank 5 and stirring tank 6;

[0044] (5) Monitor the pH value in stirring tank 4, stirring tank 5 and stirring tank 6;

[0045] (6) Press filter the pulp discharged from the mixing tank 6, and the clear liquid after the filter is reused in production;

[0046] (7) The tailin...

Embodiment 3

[0055] Include the following steps:

[0056] (1) Put the ore slurry containing high concentration of cyanide and high concentration of arsenic produced by the roasting pretreatment gold smelter into the first stirring tank, and overflow to the second stirring tank, the third stirring tank, the fourth stirring tank, the fifth stirring tank, Stirring tank six;

[0057] (2) Pass the high-concentration sulfur dioxide gas generated by roasting into the first stirring tank, the second stirring tank and the third stirring tank, and feed air at the bottom;

[0058] (3) Monitor the pH values ​​in Stirring Tank 1, Stirring Tank 2, and Stirring Tank 3;

[0059] (4) Add ferrous sulfate to stirring tank 4, stirring tank 5 and stirring tank 6;

[0060] (5) Monitor the pH value in stirring tank 4, stirring tank 5 and stirring tank 6;

[0061] (6) Press filter the pulp discharged from the mixing tank 6, and the clear liquid after the filter is reused in production;

[0062] (7) The tailings...

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Abstract

The invention relates to a treatment method of high-concentration cyanide and arsenic containing ore pulp in a roasting and pretreating gold smelting plant, and belongs to the field of environmental protection. The treatment method comprises the following steps: adding the high-concentration cyanide and high-concentration arsenic containing ore pulp produced in the roasting and pretreating gold smelting plant into a stirring tank, and sequentially overflowing into the other stirring tanks respectively; inflating high-concentration sulfur dioxide gas produced while roasting, and inflating air from the bottom; monitoring pH values in the stirring tanks; adding ferrous sulfate into the stirring tanks; and performing pressure filtration treatment on the ore pulp discharged from the final stirring tank. By the treatment method, problems of enterprises are solved, environmental risks are reduced, and environmental benefits are significant; the treatment method is simple in flow path, stablein treatment effect, high in pollutant removing rate, low in operation cost and low in one-time investment; and the treatment method has a huge effect of promoting development of the gold industry.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a method for roasting pretreatment of ore pulp containing high-concentration cyanide and high-concentration arsenic in a gold smelter. Background technique [0002] Roasting pretreatment Gold smelters will produce pulp with high concentration of cyanide and high concentration of arsenic, and the tailings after pressure filtration of the pulp are hazardous waste. In recent years, the country's management requirements for hazardous waste have become more and more stringent. Hazardous waste must be pretreated to convert it into general industrial solid waste before it can be stored and transported. Therefore, if this problem can be solved, it will be of great significance to the sustainable development of smelters in my country's roasting pretreatment gold industry. [0003] At present, there are many researches on the treatment technology of cyanide-containing a...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/06C02F101/10C02F101/18C02F103/10
Inventor 邱陆明王莹迟崇哲孟凡钰
Owner CHANGCHUN GOLD RES INST
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