a p-ph-so 2 -Application of compounds in mineral flotation

A p-ph-so2-, mineral flotation technology, applied in flotation, solid separation, etc., can solve the problems of differentiation, poor selectivity, etc., and achieve mild flotation conditions, easy access, improved collection rate and grade Effect

Active Publication Date: 2022-02-15
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Froth flotation is the main way to separate pyrite and galena, but in the separation process of pyrite and galena, the most widely used industrial sulfide ore collector at this stage is xanthate collector , the agent has no effect on pyrite (FeS 2 ) and galena surface active sites, which leads to xanthate collectors with strong collection ability but poor selectivity; therefore, the development of highly specific collectors is helpful to realize the Flotation Utilization of Mine

Method used

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  • a p-ph-so <sub>2</sub> -Application of compounds in mineral flotation
  • a p-ph-so <sub>2</sub> -Application of compounds in mineral flotation
  • a p-ph-so <sub>2</sub> -Application of compounds in mineral flotation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In order to verify the separation effect of flotation collectors in various components of sulfide minerals in this case, we use galena from Hunan or pyrite concentrate from Hubei (the original grades are shown in Table 1), and use figure 1 The process shown in this case uses the flotation agent or dixanthate as a collector to flotation different sulfide minerals. The parameters of the flotation process in each group of cases are the same, the only difference is that the types of flotation sulfide minerals are different, so as to compare the sulfide minerals in this case. Flotation and sorting effect of case flotation collector.

[0043] Formula 1-1 compound is used as collector (adding by each group's prescribed dosage), 2# oil is used as foaming agent (every group adds 1 microliter), chooses dixanthate as contrast collector, the dixanthate The dosage of the agent is consistent with the dosage of the flotation agent of the present invention.

[0044]

[0045] The sp...

Embodiment 2

[0052] By carrying out flotation experiments at different solution pHs, the optimal pH of the flotation agent of the present invention for separating galena and pyrite is explored.

[0053] With formula 1-2 compound as collector (each group adds 2.5 * 10 -4 mol / L), 2# oil is as foaming agent (25 μ L / L), chooses ethyl xanthate as contrasting collector, and the dosage of ethyl xanthate is consistent with the flotation agent dosage of the present invention.

[0054]

[0055] Use galena in Hunan or pyrite concentrate in Hubei (as shown in Table 1). use figure 1 As shown in the process, the experiment is divided into three groups, and the formula 1-2 of this case is used as the flotation collector. The parameters of the flotation process in the three groups are the same, and the only difference is that different types of sulfide mineral single minerals and different slurry pHs are used , so as to compare the flotation separation effect of the flotation collector of the present...

Embodiment 3

[0062] In order to verify the separation effect of the flotation collector in the lead-iron mixed sulfide minerals in this case, we use the galena in Hunan and the pyrite concentrate in Hubei (Table 1), and mix them at a ratio of 1:1. Uniformly, to obtain lead-iron mixed sulfide minerals, adopt figure 1 process shown.

[0063] With formula 1-3 compound as collector (5 * 10 -4 mol / L), 2# oil is used as a foaming agent (25 μ L / L), and the pH of the flotation pulp is 6 / 7 / 8.

[0064]

[0065] The specific operation is: dry-grind the concentrate ore (with a particle size of 3mm-0.5mm) for 15 minutes (the particle size after grinding is 0.0740-0.0374mm, use a horizontal ball mill for dry grinding, and the grinding concentration is 35-40%), Each group weighs 2g of the concentrate that has been ground and mixed evenly in proportion and pours it into a 40mL flotation tank, adds 30mL of deionized water, and then adds collectors of formula 1-3 and 2# oil, supplements an appropriate ...

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Abstract

The invention belongs to the field of mineral flotation, and specifically discloses a selective collector p-Ph-SO used for galena-pyrite flotation separation 2 ‑ application of compounds. The flotation agent of the invention can preferentially flotate galena in the galena-pyrite mixed sulfide ore flotation system, and can realize the high efficiency of galena and other sulfide minerals such as pyrite under environmental protection and green conditions. Separation can efficiently obtain high-grade galena concentrate products and pyrite tailings products at the same time. The near-neutral flotation environment has little impact on the environment, and the cost of subsequent beneficiation wastewater treatment is significantly reduced. Potential economic benefits, and in line with the concept of green mines.

Description

technical field [0001] The invention belongs to the field of mineral flotation, in particular to p-Ph-SO 2 - Application of analogue compounds in mineral flotation. Background technique [0002] Pyrite (FeS 2 ) is a common sulfide ore, often associated with other more valuable sulfides such as galena. Its existence has a negative impact on the beneficiation and subsequent metallurgical utilization of valuable minerals. First, in the separation of mixed sulfide minerals, pyrite usually remains in the concentrate of valuable minerals, reducing its grade and economic value. Second, it also has a negative impact on the efficiency of subsequent metallurgical processes, as residual pyrite releases sulfur dioxide during smelting, causing acid rain and other environmental problems. Therefore, it is of great economic and environmental importance to separate pyrite from valuable minerals early in the production process. [0003] Froth flotation is the main way to separate pyrite...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/008B03D1/012B03D1/018B03D1/02B03D101/02B03D103/02
CPCB03D1/008B03D1/012B03D1/018B03D1/02B03D2201/02B03D2203/02
Inventor 高志勇张晚佳吴云霞蒋旭曹建孙伟胡岳华
Owner CENT SOUTH UNIV
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