Mineral processing technology capable of reducing content of magnesium oxide in flotation concentrates of sulphide copper ores

A technology for flotation of concentrate and copper sulfide, which is applied in flotation, solid separation and other directions, can solve the problems of smelting process, high magnesium oxide content, low copper recovery rate, etc., and achieves good separation effect and less dosage. , improve the effect of selectivity

Active Publication Date: 2017-02-01
YUXI MINING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Dolomite is a mineral with high magnesium oxide content. During the flotation process of copper sulfide minerals, when the raw ore content is high and the separation is incomplete and enters the copper concentrate, it will cause high magnesium oxide content in the copper concentrate, resulting in Problems and difficulties arising from the smelting process
[0003] At present, dolomite in copper sulfide ore is separated at home and abroad to reduce the magnesium oxide content in flotation concentrate, mainly by adding water glass, carboxymethyl cellulose, sodium hexametaphosphate, humic acid and other inhibitors, but using this method After planting these methods, the magnesium oxide content is still high, the result is not ideal, and these inhibitor substances have a strong inhibitory effect on copper minerals, resulting in a large reduction in the recovery rate of copper

Method used

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  • Mineral processing technology capable of reducing content of magnesium oxide in flotation concentrates of sulphide copper ores
  • Mineral processing technology capable of reducing content of magnesium oxide in flotation concentrates of sulphide copper ores
  • Mineral processing technology capable of reducing content of magnesium oxide in flotation concentrates of sulphide copper ores

Examples

Experimental program
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Embodiment 1

[0038] like figure 1 Shown, a kind of beneficiation process that reduces magnesium oxide content in copper sulfide ore flotation concentrate comprises the following steps:

[0039] In step (1), the raw copper sulfide ore is ground by a grinding machine. When grinding, lime is added to the grinding machine at the same time. The amount of lime added is 1000 g / t, and the grinding fineness is -74 μm 80%. Obtain raw ore grinding products;

[0040] Step (2), add 60 grams / ton of sodium sulfide, 50 grams / ton of butyl xanthate and 60 grams / ton of 2# oil to the raw ore grinding product obtained in step (1) to carry out roughing of copper sulfide for the first time to obtain copper sulfide Rough concentrate Ⅰ and copper rough tailings Ⅰ;

[0041] Add 30 g / ton of sodium sulfide, 20 g / ton of butyl xanthate and 10 g / ton of 2# oil to copper rough tailings I for the second rough separation of copper sulfide to obtain copper rough concentrate II and copper rough tailings II;

[0042] Add 1...

Embodiment 2

[0046] like figure 1 Shown, a kind of beneficiation process that reduces magnesium oxide content in copper sulfide ore flotation concentrate comprises the following steps:

[0047] In step (1), the raw copper sulfide ore is ground by a grinding machine. When grinding, lime is added to the grinding machine at the same time. The amount of lime added is 1000 g / t, and the grinding fineness is -74 μm 80%. Obtain raw ore grinding products;

[0048] Step (2), add 60 grams / ton of sodium sulfide, 50 grams / ton of butyl xanthate and 60 grams / ton of 2# oil to the raw ore grinding product obtained in step (1) to carry out roughing of copper sulfide for the first time to obtain copper sulfide Rough concentrate Ⅰ and copper rough tailings Ⅰ;

[0049] Add 30 g / ton of sodium sulfide, 20 g / ton of butyl xanthate and 10 g / ton of 2# oil to copper rough tailings I for the second rough separation of copper sulfide to obtain copper rough concentrate II and copper rough tailings II;

[0050] Add 1...

Embodiment 3

[0054] A kind of beneficiation process that reduces magnesium oxide content in copper sulfide ore flotation concentrate, comprises the following steps:

[0055] In step (1), the raw copper sulfide ore is ground by a grinding machine. When grinding, lime is added to the grinding machine at the same time. The amount of lime added is 500 g / ton, and the grinding fineness is -74 μm 75%. Obtain raw ore grinding products;

[0056] In step (2), the raw ore grinding product obtained in step (1) is subjected to copper sulfide flotation, the total amount of sodium sulfide added in the flotation process is 100 grams / ton, the total amount of butyl xanthate is 50 grams / ton and 2 #Oil total amount is 50 grams / ton, obtains copper crude concentrate;

[0057] The flotation includes the second roughing and the first sweeping in sequence, the coarse copper concentrate obtained by the two roughings is merged and then the regrinding process of step (3) is carried out, and the copper sweeping conce...

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Abstract

The invention relates to a mineral processing technology capable of reducing the content of magnesium oxide in flotation concentrates of sulphide copper ores, and belongs to the technical field of mineral processing. The method comprises the following four steps: ore grinding, flotation, regrinding and concentration. Compared with the prior art, the mineral processing technology has the characteristics that sodium humate is used as an inhibitor of dolomite, the use amount of the sodium humate is small, but the inhibition effect is high; and a chemicals adding mode of regrinding copper rough concentrates and then adding the sodium humate in concentration is adopted, selectivity of the inhibition effect can be improved, and influence to recycling of copper minerals is small. The flotation agent used in the mineral processing technology is non-toxic or has low toxicity, is environmentally friendly, and is easy to popularize and use.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and relates to a mineral processing process for reducing the magnesium oxide content in copper sulfide ore flotation concentrates, in particular to a mineral processing process for sorting dolomite gangues in copper sulfide concentrates. Background technique [0002] Dolomite is a mineral with high magnesium oxide content. During the flotation process of copper sulfide minerals, when the raw ore content is high and the separation is incomplete and enters the copper concentrate, it will cause high magnesium oxide content in the copper concentrate, resulting in The smelting process creates problems and difficulties. [0003] At present, dolomite in copper sulfide ore is separated at home and abroad to reduce the magnesium oxide content in flotation concentrate, mainly by adding water glass, carboxymethyl cellulose, sodium hexametaphosphate, humic acid and other inhibitors, but using this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03D1/018B03D1/016B03B1/00B03D101/06
CPCB03B1/00B03D1/00B03D1/016B03D1/018B03D2201/06
Inventor 舒宗宪袁明华周全雄普仓凤孙宏生
Owner YUXI MINING
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