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Comprehensive treatment method for cyanogens-containing tailing pulp

A comprehensive treatment and slurry technology, applied in sludge treatment, water/sewage treatment, metallurgical wastewater treatment, etc., to achieve the effect of large treatment capacity, reduced risk, and flexible and adjustable treatment ratio

Active Publication Date: 2018-07-20
LIAONING TECHNICAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a method for filling and dry-draining cyanide-containing gold tailings, which can enhance the strength of the underground filling body, solve the problem of the source of the filling material aggregate, and improve the underground working environment , reduce the risk and intensity of downhole environmental pollution

Method used

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  • Comprehensive treatment method for cyanogens-containing tailing pulp
  • Comprehensive treatment method for cyanogens-containing tailing pulp
  • Comprehensive treatment method for cyanogens-containing tailing pulp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A comprehensive treatment method for tailings slurry containing cyanide, the process flow chart is as follows figure 1 shown, including the following steps:

[0049] Step 1: Take the cyanide-containing tailings slurry discharged from the cyanidation gold extraction process, first filter and dehydrate it, put sodium metabisulfite into the cyanide-containing tailings slurry and fully stir to remove cyanide, and use slaked lime to adjust the pH of the reaction in real time To achieve the best cyanide removal effect, obtain water-containing tailings and extracted water. The water-containing tailings has a water mass ratio of 10%, a cyanide concentration of 5ml / L, and the extracted water is treated to remove the effects of gold leaching. The components are reused in the gold leaching process or discharged after removing cyanide and other pollutants in the water;

[0050] Step 2, filling the underground goaf with the water-containing tailings, the steps are as follows:

[0...

Embodiment 2

[0065] A comprehensive treatment method for tailings slurry containing cyanide, the process flow chart is as follows figure 1 shown, including the following steps:

[0066] Step 1, take the cyanide-containing tailings slurry discharged from the cyanide gold extraction process, first perform centrifugal dehydration on it, put sodium metabisulfite into the cyanide-containing tailings slurry and fully stir to remove cyanide, use slaked lime to adjust the pH of the reaction in real time to To achieve the best cyanide removal effect, obtain water-containing tailings and extracted water. The water-containing tailings have a water mass ratio of 30%, a cyanide concentration of 10ml / L, and the extracted water is treated to remove components that affect the effect of gold leaching It is reused in the gold leaching process or discharged after removing cyanide and other pollutants in the water;

[0067] Step 2, filling the underground goaf with the water-containing tailings, the steps ar...

Embodiment 3

[0072] A comprehensive treatment method for tailings slurry containing cyanide, the process flow chart is as follows figure 1 shown, including the following steps:

[0073] Step 1: Take the cyanide-containing tailings slurry discharged from the cyanide gold extraction process, first evaporate and dehydrate it, then put chlorine dioxide into the cyanide-containing tailings slurry and fully stir to remove cyanide, and use slaked lime to adjust the pH of the reaction in real time In order to achieve the best cyanide removal effect, obtain the water-containing tailings and the extracted water. The water-containing tailings has a water mass ratio of 50%, a cyanide concentration of 10ml / L, and the extracted water is treated to remove the effects of gold leaching. The components are reused in the gold leaching process or discharged after removing cyanide and other pollutants in the water;

[0074] Step 2, filling the underground goaf with the water-containing tailings, the steps are...

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Abstract

The invention provides a comprehensive treatment method for cyanogens-containing tailing pulp. The method comprises the following steps: performing dehydration cyanogens removal treatment on cyanogens-containing tailing pulp so as to obtain water-containing tailings of corresponding parameter requirements; treating the water-containing tailings in one of the following modes: a mode I: putting a cementing material into the water-containing tailings according to a ratio, uniformly mixing, preparing granules, and maintaining as filling material aggregate, adding a mortar material, uniformly mixing, fully filling pores of the aggregate with the mortar material, forming a flowing entity, filling an under-wall gob area, and forming a filling body of certain strength and good overall properties;a mode II: putting the cementing material or sticky soil into the water-containing tailings according to a ratio, uniformly mixing, pelletizing, curing, conveying to a tailing warehouse, and discharging. The treatment method provided by the invention has the advantages of large-scale application, flexible treatment modes, adjustable and controllable process indexes, safe treatment processing and results, environment protection, and the like, and meanwhile economic requirements can be met.

Description

Technical field: [0001] The invention belongs to the technical field of tailings utilization and disposal, and in particular relates to a comprehensive treatment method for tailings slurry containing cyanide. Background technique: [0002] The cyanidation gold extraction process is the main method for extracting gold from ores or concentrates in modern times. The grade of gold ore is very low. In most cases, the ore contains only a few grams of gold per ton and the embedded particle size is very fine. Therefore, the cyanide gold extraction process produces a large amount of cyanide-containing tailings with very fine particles. The toxicity of cyanide is extremely strong, and a huge amount of fine-grained cyanide-containing tailings is very dangerous during transportation, discharge and storage. Therefore, cyanide-containing tailings slurry needs to be treated for cyanide removal after being discharged from the gold extraction process. [0003] One way to remove cyanide is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F11/00C04B18/02C04B28/02E21F15/00C02F101/18C02F103/16
CPCC02F1/00C02F1/52C02F11/00C02F2101/18C02F2103/16C04B18/021C04B28/02C04B2111/00724E21F15/00C04B18/08C04B18/12C04B18/10C04B22/145
Inventor 海龙隋淑梅苑兴伟梁国海刘强齐志超吴健王美蠲张巍瀛王景立孟凡康
Owner LIAONING TECHNICAL UNIVERSITY
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