Efficient flotation separation method of copper sulfide ores

A technology of copper sulfide ore separation method, applied in flotation, solid separation, etc., can solve the problems of unstable chemical properties of sulfur and nitrogen, aggravate the degree of mechanical inclusion, increase the degree of mechanical inclusion, etc., achieve good beneficiation indicators, and reduce sensitivity , The effect of low drug cost

Inactive Publication Date: 2019-05-10
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For copper sulfide ores containing easily muddy gangue minerals, collectors are required to have higher selectivity, and the traditional reagent system has many shortcomings in flotation of such ores: xanthate is the most widely used, and its collection capacity is strong , but the selectivity is poor; the selectivity of black medicine is better than that of xanthate, and it has foaming properties. For the slurry system containing a large amount of slime, the use of black medicine will often cause sticky foam and increase the degree of mechanical inclusion; sulfur and nitrogen collection The capacity, flotation speed, and selectivi

Method used

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  • Efficient flotation separation method of copper sulfide ores
  • Efficient flotation separation method of copper sulfide ores
  • Efficient flotation separation method of copper sulfide ores

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The raw ore contains 0.28% Cu by mass, and the gangue minerals are mainly quartz, sericite, chlorite and pyrrhotite.

[0024] The particle size of the grinding product is less than 0.074mm, accounting for 70% by mass, the pulp concentration is adjusted to 40% by mass, and 1000g / t of calcium oxide is added to realize the inhibition of pyrrhotite, which is achieved by adding a combination regulator of 172g / t For pulp dispersion and suppression of gangue minerals, 73g / t was added for flotation. After the closed-circuit process of "one rough, one sweep, two fine, and medium ore returned sequentially", the test indicators obtained are shown in Table 1.

[0025] Wherein said combined regulator includes: sodium sulfide 60g, sodium hexametaphosphate 80g and sodium humate 32g, said combined collector includes the following components by weight: alkyl xanthate propionitrile 20g, xanthate diester 15g , butyl ammonium black medicine 8g, methyl benzyl disulfide 15g and terpene alcoh...

Embodiment 2

[0036] The difference with Example 1 is:

[0037] The combined regulator includes: 80g of sodium hexametaphosphate and 32g of sodium humate, and the combined collector includes the following components in parts by weight: 20g of propionitrile alkyl xanthate, 15g of xanthate diester, butylammonium black medicine 8g, 15g of methyl benzyl thiazepine and 15g of terpene alcohol. The experimental indicators obtained are shown in Table 3.

[0038] Table 3 Flotation separation index of copper sulfide ore

[0039]

Embodiment 3

[0041] The difference with Example 1 is:

[0042] The combined regulator includes: 80 g of sodium hexametaphosphate and 32 g of sodium humate, and the combined collector includes the following components in parts by weight: 30 g of alkyl xanthate propionitrile, 20 g of methyl benzylsulfazine And terpene alcohol 20g, obtain test index and see Table 4.

[0043] Table 4 Copper sulfide ore flotation separation index

[0044]

[0045] In combination with the above examples, it can be seen that the present application effectively improves the Cu recovery rate by rationally adjusting the combination regulator and the combination collector. The combination of sodium sulfide, sodium hexametaphosphate and sodium humate can effectively improve the flotation effect. Xanthate diester and butyl ammonium black drug can interact with alkyl xanthate propionitrile, methyl benzyl sulfazate and terpene alcohol paracetamol to improve the collection efficiency.

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Abstract

The invention discloses an efficient flotation separation method of copper sulfide ores. The method includes the steps: taking the copper sulfide ores to perform ore grinding, and adjusting the mass percentage concentration of ore pulp to reach 40%; adding calcium oxide into the ore pulp according to the proportion of 800g/t-1500g/t, adding combination regulators into the ore pulp according to theproportion of 150g/t-260g/t, and adding combination collectors into the ore pulp according to the proportion of 80g/t-120g/t. The combination regulators comprise, by weight, 10-20 parts of sodium sulfide, 10-30 parts of sodium hexametaphosphate and 5-10 parts of sodium humate. The combination collectors comprise, by weight, 1-3 parts of acrylonitrile alkyl xanthate, 0.5-2 parts of Xanthate diester, 0.5-1 part of ammonium dibutyl dithiophosphate, 1-2 parts of methyl benzyl thiazide and 1-2 parts of terpene alcohol. According to the method, efficient flotation separation of copper sulfide and gangue minerals is achieved, concentrate quality is high, and environmental pollution is omitted.

Description

technical field [0001] The invention relates to a high-efficiency flotation separation method for copper sulfide ore, and belongs to the technical field of flotation separation. Background technique [0002] Copper is a non-ferrous metal closely related to human beings. It is widely used in electrical, light industry, machinery manufacturing, construction industry, defense industry and other fields. It is second only to aluminum in the consumption of non-ferrous metal materials in China. my country is a country with a relative shortage of copper resources, the per capita copper possession is very small, and the copper self-sufficiency rate is only 30%. With the rapid development of my country's economy, the demand for copper is increasing, and the contradiction between supply and demand will become more and more prominent. It is very necessary to comprehensively recycle my country's complex copper resources to alleviate the contradiction between supply and demand of my count...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/018B03D101/02B03D103/02
Inventor 张英陆宽伟罗红莹陈荣罗溪梅
Owner KUNMING UNIV OF SCI & TECH
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