Harmless comprehensive treatment method for cyanide-containing tailing pulp

A comprehensive treatment and harmless technology, applied in mining wastewater treatment, chemical instruments and methods, oxidized water/sewage treatment, etc., can solve the problem of high standard treatment cost, difficulty in direct treatment of cyanide-containing tailings slurry, unstable environmental protection treatment and other problems to achieve the effect of easy handling
CN103086548BActive Publication Date: 2014-04-02SHAANXI TAIBAI GOLD MINING IND CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SHAANXI TAIBAI GOLD MINING IND CO LTD
Publication Date
2014-04-02

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Abstract

A harmless comprehensive treatment method for a cyanide tailing pulp, consisting of three steps: pulp concentration, a cyanide-reducing pre-treatment and oxidation; for the pulp concentration: a concentration of the pulp is increased to 50% by using a thickening device, the thickened supernatant is reused in concentration plant technology, wherein in the thickening device a solid-liquid separation is performed by gravitational sedimentation; for the cyanide-reducing pre-treatment: a cyanide-reducing agent is added into the concentrated pulp; for the oxidation: the oxidation is implemented by a commonly used oxidation method, and meanwhile, activated carbon is added at the oxidation stage. Useful cyanides are recovered using the concentrating treatment, reducing the load of a subsequent treatment; the cyanide-reducing pre-treatment reduces the cyanide load for the oxidation, fixes cyanides which are difficult to oxidize, such as iron cyanide and so on, thus saving the oxidant; the pulp can easily reach the standard during the oxidation treatment, and is stable; and the tailing slag which reaches the standard by processing is a common solid waste.
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Description

technical field

[0001] The invention relates to a treatment method for cyanide-containing tailings pulp, in particular to a harmless comprehensive treatment method for cyanide-containing tailings pulp. Background technique

[0002] Sodium cyanide gold leaching and activated carbon adsorption are the current mainstream gold extraction processes in gold mines. The cyanide-containing tailings slurry produced by it is harmful to the natural environment during the stacking process and needs to be harmlessly treated.

[0003] 1. Current status and development trend of harmless treatment technology of cyanide-containing tailings pulp

[0004] In recent years, the harmless treatment of cyanide-containing tailings slurry has been gradually paid attention to. There are two types of treatment methods. One is to carry out comprehensive treatment of tailings slurry by pressure filtration, dry stacking of filter residue, and filtrate, and reuse or discharge after treatment; One is the di...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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