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Chemical bulk stack dipping process for gold-containing tailing ore without pelletizing

A tailings and loosening technology, applied in the field of hydrometallurgy, can solve the problems of inability to directly produce finished gold, difficulty in using low-grade ores, and high production costs, and achieve the reduction of the critical grade of available resources and the effect of environmental protection Good, easy-to-handle stacking effect

Inactive Publication Date: 2006-06-21
王金祥
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Problems solved by technology

The traditional method for recovering gold from gold-bearing tailings is mainly the secondary flotation or gravity separation process. The disadvantages of this process are that the scope of application is small, the finished gold cannot be directly produced, and the quality of the intermediate products produced is relatively low. Low and subsequent processing difficulty, etc.
In addition, the technology for extracting gold from gold-containing tailings is more commonly used in this field at present, which is the carbon slurry (or carbon leaching) gold extraction process and the heap leaching gold extraction process, but the disadvantages of the former are that the investment is large, the process flow is complicated, Environmental protection treatment is difficult and low-grade ore is difficult to be utilized; although the latter has the advantages of wide application range and good environmental protection effect, it must use a granulator to process the ultra-fine ore particles after the ore is crushed during the material pretreatment process. Granular processing, otherwise it is easy to form a water-resistant layer in the pile and cause leakage problems, which will cause high production costs, reduce production efficiency, and greatly affect the use and promotion of this technology

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  • Chemical bulk stack dipping process for gold-containing tailing ore without pelletizing

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Embodiment Construction

[0017] Referring to the accompanying drawings, an on-site implementation process of the present invention is as follows:

[0018] ①Material preparation: Add calcium oxide loosening agent accounting for 0.5-5.0% of the total weight of the tailings to the gold-bearing tailings to be treated, and then add (or not add) to the mineral material according to the composition of the tailings. A trace amount of sodium phenoxylate wetting agent with a value of 0.01%, and then mix the mineral material well for subsequent use;

[0019] ②Gold leaching site setting: Design the required site area according to the amount of tailings to be processed. The site is required to be flat and inclined laterally or oppositely. The inclination angle is 3-7°. 1-2 layers of water-proof materials are laid on the site. The water-proof material can be PVC soft board, plastic cloth, asphalt felt and other materials, and the joints should be laminated, welded or bonded, and no leakage is required; pebbles and ...

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Abstract

The technological process of extracting gold from tailing containing gold includes preparing material, stacking tailing, laying the liquid soaking system, leaching out gold, recovering gold, treating leached dregs and other technological steps. In the step of preparing material, the present invention solves the seepage problem in chemical loosening mode, rather than physical mode. Compared with traditional gold extracting technique, the present invention has the advantages of simple technological process, low production cost, high gold recovering rate, wide application range and good environment protecting effect.

Description

technical field [0001] The content of the invention belongs to the technical field of hydrometallurgy, and relates to a process for extracting precious metals from ore materials, in particular to a process for extracting gold from gold-bearing tailings. Background technique [0002] Gold-bearing tailings include tailings formed by processing gold ores through flotation, gravity separation, carbon slurry, carbon leaching, heap leaching and other processes. If the tailings of ferrous and non-ferrous metal ores are processed by mineral processing, if they contain gold, they also belong to this category. The traditional method for recovering gold from gold-bearing tailings is mainly the secondary flotation or gravity separation process. The disadvantages of this process are that the scope of application is small, the finished gold cannot be directly produced, and the quality of the intermediate products produced is relatively low. Low and subsequent processing is difficult. In...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B11/08C22B3/04C22B3/24
CPCY02P10/20
Inventor 王金祥
Owner 王金祥
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