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Flotation separation inhibitor of lead-zinc sulfide ore and application method thereof

An application method and inhibitor technology, applied in flotation, solid separation, etc., can solve the problems of respiratory tract and skin irritation, which is not conducive to large-scale promotion and use, and achieve strong selectivity, easy large-scale promotion, and simple preparation Effect

Active Publication Date: 2022-04-26
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, dimethyl dithiocarbamate has irritating effects on eyes, respiratory tract and skin, which is not conducive to large-scale promotion and use

Method used

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  • Flotation separation inhibitor of lead-zinc sulfide ore and application method thereof
  • Flotation separation inhibitor of lead-zinc sulfide ore and application method thereof
  • Flotation separation inhibitor of lead-zinc sulfide ore and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Take 2g of galena and sphalerite single minerals with a particle size of +38-74μm for flotation respectively, take 50mL of distilled water and add it to a 70mL hanging tank flotation machine, stir and adjust the slurry at a speed of 1300r / min to make the slurry fully dispersion.

[0034] After adding the inhibitor, adjust the pH of the pulp to 9, according to figure 1 Add the medicament to the medicament system, stir for 5min, 2min, 1min in sequence after adding the medicament, and the concentrations of the inhibitors are 0, 30, 50, 100, 200, 300, 400, 700, 1000mg / L respectively. After the stirring is completed, air flotation is carried out to obtain foam products and tailings.

[0035] Filter, dry and weigh the foam product and tailings respectively, and calculate the floating rate, the result is as follows: figure 2 shown.

[0036] It can be seen from the examples that the inhibitor has a weak inhibitory effect on galena and a strong inhibitory effect on sphalerit...

Embodiment 2

[0038] Take 2g of galena and sphalerite single minerals with a particle size of +38-74μm for flotation respectively, take 50mL of distilled water and add it to a 70mL hanging tank flotation machine, stir and adjust the slurry at a speed of 1300r / min to fully disperse the slurry .

[0039] After adding the inhibitor, adjust the slurry of galena and sphalerite to pH 4, 6, 8, 9, 10, 12, and the order of adding the agents is as follows figure 1 As shown, add inhibitor (100mg / L), butyl xanthate (20mg / L), MIBC (20mg / L), and stir for 5min, 2min, 1min in sequence after adding the reagents. After the stirring is completed, air flotation is carried out to obtain foam products and tailings.

[0040] Filter, dry and weigh the foam product and tailings respectively, and calculate the floating rate, the result is as follows: image 3 shown.

[0041]It can be seen from the examples that the inhibitor has a very low inhibitory effect on galena in the range of pH 6-12, the floating rate of ...

Embodiment 3

[0043] Take 1.0g of galena and sphalerite single minerals of +38-74μm and mix them evenly at a ratio of 1:1, take 50mL of distilled water and add it to a 70mL hanging tank flotation machine, stir and mix at a speed of 1300r / min , so that the slurry is fully dispersed.

[0044] The order of adding the medicaments is as follows: figure 1 As shown, after adding the inhibitor, adjust the pH of the pulp to 6, add the inhibitor (700mg / L), butyl xanthate (20mg / L), MIBC (20mg / L), and stir for 5min, 2min, 1min in sequence after adding the agent . After the stirring is completed, air flotation is carried out to obtain foam products and tailings.

[0045] The foam product and tailings are filtered, dried and weighed respectively to calculate the flotation rate, test the grades of ZnS and PbS in the concentrate and calculate the recovery rate of ZnS and PbS. The results are shown in Table 1.

[0046] As can be seen from the examples, the inhibitor can realize the effective flotation s...

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Abstract

The invention relates to the technical field of sulfide ore flotation agents, in particular to a lead-zinc sulfide ore flotation separation inhibitor and an application method thereof. The invention specifically discloses a method for applying the flotation separation inhibitor of lead-zinc sulfide ore, comprising the following steps S1: adding water to the lead-zinc sulfide ore to obtain pulp; S2: adding 2-hydroxyphosphonoacetic acid to the pulp; S3 : adjust the pH value of the pulp; S4: aerated flotation to obtain foam products and tailings. The inhibitor provided by the invention is simple to prepare, is friendly to the environment, and does not produce pollution; the inhibitor has good solubility, strong selectivity, good inhibitory effect, wide applicable pH range, less dosage, low price, and is easy to be popularized on a large scale. The inhibitor of the present application has an excellent inhibitory effect on sphalerite. It can be applied to flotation separation of lead-zinc mixed concentrate, and can realize high-efficiency flotation separation of sphalerite and galena.

Description

technical field [0001] The invention relates to the technical field of sulfide ore flotation agents, in particular to a lead-zinc sulfide ore flotation separation inhibitor and an application method thereof. Background technique [0002] As an important non-ferrous metal resource, sphalerite occupies a pivotal position in the development of the national economy. Its products are widely used in steel, chemical, mechanical, electrical, military and other fields. my country is rich in sphalerite resources, but generally speaking, it presents the characteristics of less rich ore, more low-grade ore, more associated elements, and complex ore properties. As of 2015, my country's proven zinc resource reserves are 41.03 million tons, ranking second in the world after Australia. With the rapid development of China's economy, my country's demand for zinc resources is increasing day by day, and industrial products using lead and zinc as raw materials are widely used in various fields ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/014B03D1/02B03D101/06B03D103/02
CPCB03D1/014B03D1/02B03D2201/06B03D2203/02
Inventor 杨丙桥曾龙颜朱环宇冯金婵贾菲菲
Owner WUHAN INSTITUTE OF TECHNOLOGY
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