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A kind of flotation reagent and the flotation separation method of molybdenum bismuth sulfur polymetallic sulfide ore

A separation method and technology of sulfide ore, applied in flotation, solid separation, etc., can solve the problems of low cyanide effect, highly toxic cyanide, and reduced effect of sodium cyanide, etc., to achieve green and efficient flotation separation, Simple operation effect

Active Publication Date: 2020-12-04
GANZHOU NONFERROUS METALLURGICAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, cyanide is highly toxic, which can seriously pollute the ecological environment and endanger human health; at the same time, when the ore or the water used contains soluble copper salts or soluble iron salts, the effect of sodium cyanide will be greatly reduced, even The effect is also low when the amount of cyanide is increased; moreover, when the gold and silver content in the ore is large, the gold and silver will be dissolved under the optimal amount of cyanide, resulting in a waste of resources

Method used

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  • A kind of flotation reagent and the flotation separation method of molybdenum bismuth sulfur polymetallic sulfide ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) molybdenum-bismuth-sulfur polymetallic sulfide ore is crushed and ground to obtain grinding material (the mineral material with a particle size≤0.076mm in the grinding material accounts for about 40% of the total grinding material), and then the The grinding material is processed through a process of roughing, three sweeping and one fine (that is, one roughing, three sweeping and one beneficiation) to obtain ore slurry (mass concentration is about 30%);

[0048] (2) Combine ore pulp with compound alkali (addition amount is 5.0kg / t), sodium thioglycolate (addition amount is 1.5kg / t), ethylsulfide nitrogen (addition amount is 320g / t) and kerosene (addition amount is 170g / t) t) mixing. At this time, the pH value of the slurry is about 12.5, and the molybdenum-bismuth mixed flotation roughing treatment is carried out to obtain the concentrate A and the middle ore B;

[0049] In the concentrate A, add sodium thioglycolate (addition is 600g / t), kerosene (addition is 55g / t...

Embodiment 2

[0056] Carry out flotation separation to molybdenum bismuth sulfur polymetallic sulfide ore according to the method for embodiment 1, difference is:

[0057] The content of Mo in the molybdenum bismuth sulfur polymetallic sulfide ore used in step (1) is 6.00%, and the content of Bi is 2.20%;

[0058] In the molybdenum-bismuth mixed flotation roughing treatment of step (2), the addition of compound alkali is reduced to 4.5kg / t by 5.0kg / t, and the addition of sodium thioglycolate is reduced to 1.3kg / t by 1.5kg / t;

[0059] The addition of sodium sulfide is reduced to 3.0kg / t by 3.5kg / t in the molybdenum-bismuth separation roughing treatment of step (3), the addition of sodium sulfite is reduced to 3.0kg / t by 3.5kg / t, the addition of sodium thioglycolate The amount is reduced from 350g / t to 300g / t.

[0060] Processed by the method in this embodiment (i.e. with reference to figure 1 Carry out closed circuit test) after, the content of Mo, Bi is respectively 40.97%, 0.67% in the g...

Embodiment 3

[0062] Carry out flotation separation to molybdenum bismuth sulfur polymetallic sulfide ore according to the method for embodiment 1, difference is:

[0063] The content of Mo in the molybdenum bismuth sulfur polymetallic sulfide ore used in step (1) is 6.39%, and the content of Bi is 2.59%;

[0064] In the molybdenum-bismuth mixed flotation roughing treatment of step (2), the addition of compound alkali is reduced to 4.0kg / t by 5.0kg / t, and the addition of sodium thioglycolate is reduced to 1.2kg / t by 1.5kg / t;

[0065] The addition of sodium sulfide increases to 4.0kg / t, the addition of sodium sulfite increases from 3.5kg / t to 4.0kg / t, the addition of sodium thioglycolate in the molybdenum-bismuth separation roughing treatment of step (3). The amount is reduced from 350g / t to 400g / t.

[0066] Processed by the method in this embodiment (i.e. with reference to figure 1 Carry out closed-circuit test) after, the content of Mo, Bi is respectively 43.16%, 0.48% in the gained molybd...

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Abstract

The invention belongs to the technical field of ore dressing, and more specifically relates to a flotation agent, and a molybdenum bismuth sulfur multi-metal ore flotation selection separation method. According to the flotation agent, in a first component, a composite alkali and sodium thioglycollate are taken as inhibitors to inhibit pyrites, ethyl thio carbamate and kerosene are taken as capturing agent for capturing of molybdenum and bismuth, so that effective separation of molybdenum and bismuth with pyrites is realized; in a second component, sodium sulfide, sodium sulfite, and sodium thioglycollate are taken as inhibitors, wherein sodium sulfite and sodium sulfide are mainly used for inhibiting bismuth mineral, and sodium thioglycollate is used for inhibiting floating pyrites in molybdenum bismuth mixing floatation processing process, and kerosene is taken as a capturing agent, so that molybdenum and bismuth separation can be realized. The nontoxic environment-friendly flotation agent is adopted to replace cyanides, so that molybdenum bismuth sulfur green high efficiency floatation separation can be realized, problems in the prior art that safety hidden troubles and environment pollution are caused because of difficult cyanogens-free flotation of molybdenum bismuth sulfur multi-metal sulphide ore, and using of cyanide are solved; and the flotation agent is suitable for large scale production.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a flotation separation method for a flotation reagent and a molybdenum-bismuth-sulfur polymetallic sulfide ore. Background technique [0002] The flotation separation of molybdenum-bismuth-sulfur polymetallic sulfide ores has always been the focus and difficulty of research in mineral processing circles at home and abroad. The traditional flotation separation process mostly uses cyanide, such as sodium cyanide, as an inhibitor for molybdenum-bismuth separation or bismuth-sulfur separation. However, cyanide is highly toxic, which can seriously pollute the ecological environment and endanger human health; at the same time, when the ore or the water used contains soluble copper salts or soluble iron salts, the effect of sodium cyanide will be greatly reduced, even The action effect is also lower when increasing the cyanide consumption; And, when the gold and silver conte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/012B03D1/018B03D1/008B03D101/06B03D101/02B03D101/04
CPCB03D1/008B03D1/012B03D1/018B03D2201/02B03D2201/04B03D2201/06
Inventor 沈新春古吉汉李平李振飞张婷周宝炉
Owner GANZHOU NONFERROUS METALLURGICAL RES INST