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Method for recycling gold from serpentine asbestos rock type asbestos tailings

A technology of asbestos tailings and serpentine, applied in chemical instruments and methods, wet separation, magnetic separation, etc., can solve the problems of occupying land, environmental pollution, and hindering the normal development of society and economy around the mining area.

Inactive Publication Date: 2013-10-30
牛庆君
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the process of selecting asbestos from serpentine asbestos is: blowing asbestos when the particle size of serpentine asbestos is 0.00 to 6.00 mm after crushing, and selecting 1 ton of qualified grade 3 to 5 asbestos with serpentine asbestos 26-28 tons of rock wool ore, that is, 25-27 tons of tailings are produced for every ton of finished asbestos produced. The generation and storage of tailings occupy a large amount of land and cause serious pollution and damage to the environment
[0004] Asbestos tailings have not been effectively treated and comprehensively utilized, which not only caused a great waste of nickel, chromium, cobalt, iron, gold and other resources in asbestos tailings, but also caused serious damage to the ecological environment around the mining area, hindering The normal development of society and economy around the mining area

Method used

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  • Method for recycling gold from serpentine asbestos rock type asbestos tailings

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Effect test

Embodiment 1

[0039] One of the recycling methods that the present invention adopts is:

[0040] A method for recycling gold from serpentine asbestos-type asbestos tailings, comprising the steps of:

[0041] (1) Crushing the serpentine asbestos-type asbestos tailings to a particle size of ≤3mm;

[0042] (2) Add water to the obtained tailings particles with a ball mill and carry out wet grinding until at least 95% of the pulp particles are greater than or equal to 500 mesh; add water to adjust the concentration of the obtained pulp to 20% to 60% (that is, the mineral weight accounts for the total weight of the pulp 20% of the total weight of the pulp, the weight of water accounts for 80% of the total weight of the pulp, and so on), and then the gold-containing part can be selected by the water gravity separation method with the liquid pulp spiral stirring gravity separation machine for mineral processing.

[0043] Since the molecular group of the gold-containing compound of this mineral is ...

Embodiment 2

[0049] Two of the recycling method that the present invention adopts is:

[0050] (1) Crushing the serpentine-asbestos-type asbestos tailings to a particle size of ≤3mm; the crushed serpentine-asbestos-type asbestos tailings powder particles with a particle size of ≤3mm are beneficiated with a strong magnetic separator; Use the conveyor belt to transport the asbestos tailings powder to the silo above the strong magnetic separator, control it to spread evenly from the silo to the surface of the magnetic roller of the strong magnetic separator, and make the magnetic roller follow the specified The speed rotates evenly.

[0051] Since nickel, chromium, cobalt, iron, gold, etc. are associated together in serpentine asbestos-type asbestos tailings, part of the iron in it is magnetite. , cobalt, iron, gold and other associated ores are adsorbed on the magnetic roller of the strong magnetic separator.

[0052] When the thickness of the magnetic powder and granules of the associated...

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Abstract

The invention relates to a method for recycling gold from serpentine asbestos rock type asbestos tailings. The method is characterized by comprising that particle sizes of the serpentine asbestos rock type asbestos tailings are crushed to be less than or equal to 3mm; tailing particles are subjected to wet grinding in a ball mill by adding water until at least 95% of slurry particles are larger than or equal to 500 meshes; the concentration of the obtained slurry is regulated to be in a range from 20% to 60% by adding water, parts containing gold are separated by using a gravity concentrator with a water gravity separation process, the parts containing gold serving as mixed materials are smelted according to a process for smelting pig iron containing nickel, chromium and cobalt. According to the method, the serpentine asbestos rock type asbestos tailings are regarded as associated minerals of multiple metals and nonmetal of nickel, chromium, cobalt, iron, gold, magnesium, calcium, silica and the like, and particularly, the serpentine asbestos rock type asbestos tailings are regarded as a unique novel gold mine resource. The serpentine asbestos rock type asbestos tailings are used comprehensively, and the method is mainly used for recycling gold elements.

Description

technical field [0001] The invention relates to a method for recovering and utilizing gold from serpentine asbestos-type asbestos tailings. Background technique [0002] Serpentine asbestos is a magnesium aluminum silicate mineral. Serpentine asbestos is also known as chrysotile. Its theoretical chemical composition is Mg 6 Si 4 o 10 (OH) 8 , containing MgO 43.00%, SiO 2 44.10%, H 2 O 12.9%; fiber serpentine is a layered structure. In addition to asbestos, serpentine asbestos also contains nickel Ni, chromium Cr, cobalt Co, iron Fe, copper Cu, gold Au, silver Ag, calcium Ca, magnesium Mg, aluminum Al, lead pb, zinc Zn, potassium K, sodium Na, manganese Mn, titanium Ti, tin Sn, rubidium Rb, strontium Sr, yttrium Y, zirconium Zr, hafnium Hf, cerium Ce, barium Ba, cadmium Cd, uranium U, gallium Ga, niobium Nb, tungsten W, Silicon Si, sulfur S, phosphorus P, etc. [0003] At present, the process of selecting asbestos from serpentine asbestos is: blowing asbestos when th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B03B5/30B02C17/10B03C1/02
Inventor 牛庆君
Owner 牛庆君