Preparation and method for treating high-arsenic and high-sulfur gold ore

A preparation and high-sulfur technology, applied in the field of metallurgy, can solve the problems of poor desulfurization effect, cumbersome domestication steps, and the leaching rate of bacterial agent resistance to arsenic to be improved, so as to improve the crushing efficiency, avoid environmental pollution, and have good tolerance Effect

Active Publication Date: 2013-04-03
SHANDONG GOLD GUILAIZHUANG MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese invention patent CN101333599A discloses a method for oxidizing arsenic-resistant bacteria to pretreat high-arsenic complex and refractory gold mines-cyanide gold extrac

Method used

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Examples

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Effect test

Embodiment 1

[0030] A preparation for treating high-arsenic and high-sulfur gold ore, the active ingredient of the preparation includes the following raw materials in weight percentage:

[0031] Burkholderia 25%, acidophilus Thiobacillus ferrooxidans 20%, Sulfolobus sulfolobus 20%, Bacillus subtilis 20%, Pseudomonas aeruginosa 15%.

[0032] The Burkholderia is Burkholderia sp.D54, CGMCC NO.3223. The acidophilic Thiobacillus ferrooxidans is Acidithiobacillus ferrooxidans ATCC53993. The Sulfolobus solfataricus ATCC35092 is preferably Sulfolobus solfataricus. The Bacillus subtilis is Bacillus subtilis ATCC6633. The Pseudomonas aeruginosa is Pseudomonas aeruginosa ATCC15442.

[0033] The specific cultivation method is as follows:

[0034] Burkholderia: first inoculated on potato dextrose agar medium (PDA) at 28-30°C for primary slant culture, and then fermented until the number of viable bacteria in the product reached 1.0×10 8 pcs / g.

[0035] Acidophilus Thiobacillus ferrooxidans or Sul...

Embodiment 2

[0041] The gold mine selected as the material is a high-sulfur and high-arsenic gold mine in Shandong Province. The main metal minerals are pyrite and arsenopyrite, and the gangue minerals are mainly quartz. The main element analysis results of the ore samples are shown in Table 1

[0042] element As Fe Cu S Au K content% 12.3 23.7 0.03 15.4 0.0048 2.1

[0043] A method for processing high-arsenic and high-sulfur gold ore, comprising the steps of:

[0044] The high-arsenic and high-sulfur gold ore is crushed by a crusher to keep the particle size of the ore particles below 10mm, and then sent to a ball mill for grinding to a particle size of 100 mesh ore powder, wherein an activator is added to the ball mill in an amount equal to the mass of the ore The activator is mixed according to the mass ratio of sodium silicate: kerosene of 1:1; water is added to adjust the mineral powder concentration to 30% (w / v) ore slurry, and then in the ore slurr...

Embodiment 3

[0049] Comparative test: divided into three control groups, specifically Control 1, Control 2, and Example 2 of the present invention.

[0050] Control group 1: The microbial preparation is prepared from acidophilus Thiobacillus ferrooxidans and acidophilus Thiobacillus acidophilus according to the ratio of 1:1, the dosage of sodium cyanide is 5kg / t, and the rest is the same as in Example 2; Control group 2: The microbial preparation is Acidophilus Thiobacillus ferrooxidans, Acidophilus Thiobacillus and Leptospira ferrooxidans were prepared according to the ratio of 1:1:1, the dosage of sodium cyanide was 2kg / t, and the rest were the same as in Example 2. The desulfurization rate, arsenic removal rate and gold leaching rate were obtained by testing, see Table 2.

[0051] Table 2

[0052] group Desulfurization rate% Arsenic removal rate% Gold leaching rate% Control group 1 78.13 84.29 89.35 Control group 2 82.34 92.15 93.14 this invention ...

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Abstract

The invention belongs to the technical field of metallurgy, and relates to a preparation for treating a high-arsenic and high-sulfur gold ore. The preparation comprises the following active components: 25% of Burkholderia caribensis, 20% of Acidithiobacillus ferrooxidans, 20% of Sulfolobus solfataricus, 20% of Bacillus subtilis and 15% of Pseudomonas aeruginosa. The invention also discloses a method for treating a high-arsenic and high-sulfur gold ore. The microorganisms in the preparation are combined reasonably and can cooperate with each other, so that better sulfur removal and arsenic removal effect can be achieved, and the gold leaching rate is greatly improved; and the preparation can be recovered and used repeatedly, thereby ensuring environment friendliness and no pollution.

Description

[0001] technical field [0002] The invention belongs to the technical field of metallurgy, and relates to a preparation and a method for treating high-arsenic and high-sulfur gold ore. [0003] Background technique [0004] With the depletion of easy-to-select gold ore resources, the development of high-sulfur and high-arsenic gold ore has become a hot spot in gold development. High-sulfur and high-arsenic gold ores are generally refractory gold ores, and their development and utilization is a worldwide problem. High-sulfur and high-arsenic gold ore is a kind of refractory gold ore, which means that the ore is leached directly after grinding, and the gold leaching rate is low or very low, mostly lower than 50%. High-sulfur and high-arsenic gold deposits are widely distributed throughout China, accounting for more than 1 / 3 of my country's proven reserves. This type of gold deposit has low grade, large scale, no obvious boundary between ore body and surrounding rock, and g...

Claims

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Application Information

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IPC IPC(8): C22B3/18C22B11/00
CPCY02P10/20
Inventor 尹国光唐守营金培庸施兴平何智文池洁
Owner SHANDONG GOLD GUILAIZHUANG MINING CO LTD
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