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A kind of flotation separation method of galena and pyrite

A separation method and technology of pyrite, applied in flotation, solid separation and other directions, can solve the problems of target mineral flotation effect, increase human and material resource consumption, difficult to achieve separation, etc., and achieve improved flotation selectivity and improved capture. Yield and grade, the effect of improving recovery and grade

Active Publication Date: 2022-03-01
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the most important problems that plague the flotation of sulfide minerals at this stage is that the active sites on the surface of galena and pyrite for the adsorption of collector molecules are metal cations. At this stage, commonly used collectors for sulfide minerals such as yellow The surface action strength of galena and pyrite, such as pharmaceutical collectors, is similar, and it is difficult to achieve separation
At present, the industry often uses various inhibitors to inhibit pyrite to achieve the separation of lead-iron sulfide minerals, but adding inhibitors will have a certain impact on the flotation of target minerals, not only that, but also increase additional manpower and material resources consumption and have adverse effects on the environment, so it is of great significance to develop a means to achieve efficient separation of galena and pyrite without inhibitors

Method used

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  • A kind of flotation separation method of galena and pyrite
  • A kind of flotation separation method of galena and pyrite
  • A kind of flotation separation method of galena and pyrite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In order to verify the separation effect of flotation collectors in various components of sulfide minerals in this case, we use galena in Hunan or pyrite concentrate in Hubei (the composition is shown in Table 1), and use figure 1 The process shown in this case uses the flotation collector or potassium butyl xanthate as the collector to flotation different sulfide minerals. The parameters of the flotation process in each group of cases are the same, the only difference is the type of flotation sulfide minerals Different, so as to compare the flotation and sorting effect of the flotation collector in this case.

[0049] The compound of formula 1-1 is used as a collector (according to the dosage specified in Table 2), 2# oil is used as a foaming agent (25 μ L / L), and potassium butyl xanthate is selected as a contrast collector, and butyl xanthogen The dosage of potassium acid potassium is consistent with the dosage of flotation agent dosage (formula 1-1) of the present in...

Embodiment 2

[0057] By carrying out flotation experiments at different solution pHs, the optimal pH of the flotation collector of the present invention for separating galena and pyrite is explored.

[0058] With formula 1-2 compound as collector (5 * 10 -4 mol / L), 2# oil is as foaming agent (25 μ L / L), chooses potassium butyl xanthate as contrast collector, the dosage of potassium butyl xanthate is the same as the dosage of flotation collector of the present invention unanimous.

[0059]

[0060] 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, using the agent containing the collector of formula 1-2 as the flotation agent. The parameters of the flotation process in the three groups are the same, the only difference is that different types of sulfide mineral single minerals and different The pH of the ore pulp is used to compare the flotation separation effect of the flotation c...

Embodiment 3

[0068] In order to verify the separation effect of the flotation agent in the sulfide mixed minerals of each component in this case, we use galena from Hunan and pyrite concentrate from Hubei (as shown in Table 1), and mix them evenly at a ratio of 1:1. , to obtain lead-iron mixed sulfide minerals, using figure 1 process shown.

[0069] Formula 1-3 compound is used as collector (each group adds 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.

[0070]

[0071] The specific operation is: dry-grind the concentrate ore (lead-iron mixed sulfide minerals, particle size 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 uniformly in proportion and pours it into a 40mL flotation tank. After adding 30mL of deionized water, control the pH ...

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Abstract

The invention belongs to the field of mineral flotation, and specifically discloses a flotation separation method for galena and pyrite, which uses a compound capable of ionizing the structure of formula 1 as a flotation collector, and is used for the flotation of galena and pyrite Flotation is carried out on the mixed ore of iron ore, and the concentrate rich in galena and the tailings rich in pyrite are obtained by separation. The technical solution of the present invention has excellent flotation selectivity of galena and pyrite, and the flotation agent has the advantage of low toxicity, which greatly reduces the cost of subsequent mineral processing wastewater treatment and conforms to the concept of green mines.

Description

technical field [0001] The invention belongs to the field of mineral flotation, in particular to a method for selectively separating galena and pyrite based on flotation means. Background technique [0002] Galena is the most widely distributed lead mineral and the most important mineral raw material for refining lead. Pyrite is the most widely distributed sulfide mineral and the main raw material for the production of sulfuric acid. However, pyrite is often associated with galena ore, and the two are similar in nature and difficult to separate. Pyrite is often doped in galena concentrate products, which not only seriously affects the grade of galena concentrate products, but also It will cause trouble to the subsequent smelting process. [0003] The most effective and commonly used method for the separation and utilization of lead-iron sulfide minerals at this stage is through flotation. Flotation is a beneficiation method that selectively separates minerals based on the ...

Claims

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Application Information

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IPC IPC(8): B03D1/008B03D1/012B03D1/02B03D101/02B03D103/04B03D103/02
CPCB03D1/008B03D1/012B03D1/02B03D2201/02B03D2203/04B03D2203/02
Inventor 高志勇吴云霞张晚佳蒋旭曹建孙伟胡岳华
Owner CENT SOUTH UNIV
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