Composite inhibitor and application thereof

A compound depressant and flotation agent technology, applied in solid separation, flotation, etc., can solve problems such as the fact that the practical effect cannot reach the ideal state of the laboratory, the lack of adjustability and operability, and the addition of too much depressant dosage. , to achieve maximum practical promotion value and market potential, reduce energy consumption and pharmaceutical costs, and have strong adaptability

Active Publication Date: 2022-02-18
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the single inorganic phosphate or organic phosphate announced by it has achieved certain effects in the flotation of related ores, when the raw ore grade and calcium-containing gangue mineral content fluctuate, it can only be adjusted by adjusting the amount of inhibitor. Improve the sorting efficiency, but even if the amount of inhibitor is greatly increased, the impact on the efficiency of flotation is quite limited
Especially when targeting low-grade scheelite with large fluctuations in raw ore properties, adjustability and operability are still lacking
Moreover, if the amount of inhibitor is added too much, not only the cost will be greatly increased, but also there will be quite a lot of negative effects
At the same time, the inventions provided by some patents have only been implemented in the pure mineral test, and the laboratory micro-flotation test is quite different from the actual ore
The practical effect is far from the ideal state of the laboratory

Method used

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  • Composite inhibitor and application thereof
  • Composite inhibitor and application thereof
  • Composite inhibitor and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The composite inhibitor contains 50% of inorganic phosphate and 50% of organic phosphate, calculated by weight percentage. The inorganic phosphate is sodium tripolyphosphate, and the organic phosphate is sodium ethylenediamine tetramethylene phosphate. Add each component into the mixing tank according to the above weight ratio; then, add clear water into the mixing tank, the ratio of the regulator to the clear water is 1:99 in parts by weight.

[0054] The application effect of compound inhibitors in the roughing process of a low-grade scheelite with WO3 content of 0.09% was investigated. The mine is a typical scheelite-calcite-fluorite ore, that is, the gangue minerals are mainly calcite and fluorite, as well as feldspar, chlorite, amphibole, mica, and quartz. Flotation process see figure 1 . according to figure 1 According to the process, the raw ore is ground to -0.074mm, accounting for 55%-78% fineness, and then added to the flotation tank. The flotation agent ...

Embodiment 2

[0069] The composite inhibitor of Example 2 contains 5% of inorganic phosphate and 95% of organic phosphate by weight percentage. The inorganic phosphate is sodium hexametaphosphate, and the organic phosphate is sodium hexamethylenediamine tetramethylene phosphate. Add each component into the mixing tank according to the above weight ratio; then, add clean water into the mixing tank, and the ratio of the regulator to the clear water is 15:85 by weight.

[0070] The application effect of the composite inhibitor in Example 2 in the roughing process of ultra-low-grade scheelite with a WO3 content of 0.015% was investigated. Compared with the calcium-containing gangue in the raw ore of embodiment 1, the type and content of calcium-containing gangue minerals in embodiment 2 have changed, and each group in the combination regulator can be adjusted according to the calcium-containing gangue mineral content and type. Component content, so that the combination regulator can produce th...

Embodiment 3

[0076] The composite inhibitor of Example 3 contains 95% of inorganic phosphate and 5% of organic phosphate, calculated by weight percentage. The inorganic phosphate is sodium tripolyphosphate, and the organic phosphate is sodium ethylenediaminetetramethylphosphate. Add each component into the mixing tank according to the above weight ratio; then, add clean water into the mixing tank, and the ratio of the regulator to the clear water is 15:85 by weight.

[0077] The application effect of the compound inhibitor of Example 3 in the roughing process of a low-grade high wollastonite scheelite was examined. The content of WO3 in the raw ore was 0.15%, and the content of wollastonite was about 30%. According to the content and type of calcium-containing gangue minerals, the content of each component in the combination regulator is adjusted, so that the combination regulator can produce the best compatibility, produce positive synergy, and realize the precise separation of scheelite ...

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Abstract

The invention discloses preparation and application methods of a combined regulator for roughing of low-grade scheelite. The combined regulator mainly comprises inorganic phosphate and organic phosphate, wherein the structure of the inorganic phosphate is as shown in a formula 1 which is described in the specification, and X in the formula 1 is in a range of 2-5; and the structure of the organic phosphate is as shown in a formula 2 which is described in the specification, and n in the formula 2 is in a range of 2-8. Under the condition of proper dosage and usage, a calcium-containing mineral can be efficiently separated on the premise of ensuring the recovery rate of a target mineral. The combined regulator is high in adaptive capacity and small in dosage, and precise separation of different calcium-containing minerals is achieved by regulating and controlling a component ratio.

Description

technical field [0001] The invention relates to the application of a compound inhibitor in scheelite flotation, and belongs to the technical field of calcium-containing gangue mineral inhibitors. Background technique [0002] Due to the similar physical and chemical properties on the surface of calcium-containing minerals, the separation of calcium-containing minerals has always been a difficult problem in the beneficiation industry. Flotation is the main technical method for recovering calcium-containing minerals. As the main collector for calcium-containing mineral flotation, fatty acid has good collection capacity, but its selectivity is extremely poor, and the target calcium-containing minerals and calcium-containing veins cannot be realized. Separation of stone minerals. Therefore, inhibitors are often added during the flotation separation of calcium-containing minerals to enhance the separation effect. Taking scheelite as an example, affected by the mineralization pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/014B03D101/06B03D103/02
CPCB03D1/014B03D2201/06B03D2203/02
Inventor 焦芬王旭覃文庆杨聪仁李卫张政权任满年宋灏
Owner CENT SOUTH UNIV
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