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Pyrrhotite flotation depressant and application thereof

A pyrrhotite and inhibitor technology, applied in flotation, solid separation and other directions, can solve the problem that the grade of nickel concentrate is not greatly improved.

Inactive Publication Date: 2019-01-01
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, this process adds sulfuric acid as an activator of nickel minerals in the process of suppressing pyrrhotite, which will inevitably activate pyrrhotite, resulting in no significant increase in the grade of nickel concentrate

Method used

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  • Pyrrhotite flotation depressant and application thereof
  • Pyrrhotite flotation depressant and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 2 As shown, add 600g CMC, 1000g Na 2 CO 3 Act for 3 minutes; add 100g DETA, 800g SMBS to act for 3 minutes; add 80g butyl xanthate, 30g MIBC to act for 2 minutes, and then conduct a roughing flotation for 4 minutes. A section of rough separation concentrate and a section of rough separation ore are obtained.

[0036] Then, the first-stage rougher ore is subjected to second-stage rougher flotation. Add 300g of CMC to the first stage of rough separation for 3 minutes based on the amount of dry ore per ton; add 50g of DETA and 400g of SMBS for 3 minutes; add 40g of butyl xanthate and 15g of MIBC for 2 minutes and then carry out the second stage of rough separation and flotation for 4 minutes. The second-stage rougher concentrate and the second-stage rougher ore are obtained.

[0037] Subsequently, the first-stage rougher concentrate and the second-stage rougher concentrate are subjected to the first-stage selection flotation; the second-stage rougher co...

Embodiment 2

[0043] Add 500g CMC, 1500g Na 2 CO 3 Act for 3 minutes; add 150g DETA, 1000g SMBS for 3 minutes; add 60g butyl xanthate, 30g MIBC for 2 minutes, and then conduct a roughing flotation for 4 minutes. A section of rough separation concentrate and a section of rough separation ore are obtained.

[0044] Then, the first-stage rougher ore is subjected to second-stage rougher flotation. Add 250g CMC per ton of dry ore to the first-stage rough separation for 3 minutes; add 70g DETA and 500g SMBS for 3 minutes; add 30g butyl xanthate and 15g MIBC for 2 minutes, then conduct second-stage rough separation and flotation for 4 minutes. The second-stage rougher concentrate and the second-stage rougher ore are obtained.

[0045] Subsequently, the first-stage rougher concentrate and the second-stage rougher concentrate are subjected to the first-stage selection flotation; the second-stage rougher concentrate is subjected to the first scavenging flotation. Add 80g CMC, 300g Na 2 CO 3 Act...

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Abstract

The invention provides a pyrrhotite flotation depressant. The pyrrhotite flotation depressant comprises sodium carboxymethyl cellulose, soluble carbonate, sodium metabisulfite and polyamine. The invention further provides an ore separating method using the flotation depressant. The depressant can effectively depress gangue minerals and pyrrhotite, so that high-nickel-content nickel concentrates can be separated. According to the ore separating method, the gangue minerals and the pyrrhotite are depressed through the depressant, high-nickel-content products, such as pentlandite, in ores are first separated through flotation, and accordingly, the high-nickel-content nickel concentrates are obtained. Then, copper sulphate is added for activation, and the depressed pyrrhotite is recycled, so that low-nickel-content nickel concentrates are obtained.

Description

technical field [0001] The invention relates to the field of hydrometallurgy, in particular to a pyrrhotite flotation inhibitor and its application in mineral processing methods. Background technique [0002] Nickel is an important strategic material and plays an important role in the production of the national economy. my country's nickel resources are mainly nickel sulfide ore, which is mostly recovered by flotation. Nickel sulfide ores are generally polymetallic ores, often accompanied by various sulfide minerals, and most sulfides do not contain nickel or have low nickel content, such as pyrrhotite. These associated sulfide minerals are easy to enter the nickel concentrate and reduce the nickel grade of the concentrate. At present, the Ni grade of nickel concentrate processed by smelters is generally around 4% to 8%. If the grade of nickel concentrate can be greatly increased, the cost of pyrometallurgy can be reduced, and there is even the possibility of finding a new...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/06B03D103/02
CPCB03D1/018B03D2201/06B03D2203/02
Inventor 刘志国王传龙姜志学于传兵宋磊郭素红王亚运王鑫
Owner CHINA ENFI ENGINEERING CORPORATION
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