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Inhibitor for effectively inhibiting calcium-containing and silicon-containing minerals in barite ore

A barite and inhibitor technology, applied in solid separation, flotation and other directions, can solve the problem of difficult separation of barite ore minerals and gangue minerals, and achieve the effect of high selectivity and good inhibition effect.

Inactive Publication Date: 2019-12-27
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that useful minerals and gangue minerals are difficult to separate during barite ore flotation, the present invention provides an inhibitor that can effectively separate calcium-containing and silicon-containing minerals in barite ore, and can effectively inhibit calcium-containing minerals. siliceous gangue minerals

Method used

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  • Inhibitor for effectively inhibiting calcium-containing and silicon-containing minerals in barite ore
  • Inhibitor for effectively inhibiting calcium-containing and silicon-containing minerals in barite ore
  • Inhibitor for effectively inhibiting calcium-containing and silicon-containing minerals in barite ore

Examples

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Effect test

Embodiment 1

[0022] Pure minerals such as barite, calcite, and dolomite were selected and purified by hand, and then ground with an agate grinder. Pure mineral samples with a particle size of -90 μm + 38 μm were taken, washed repeatedly with distilled water, and used as experimental minerals. The mineral flotation test was carried out in a 40 mL hanging tank flotation machine. The amount of test ore sample was 2.0 g each time, stirred for 1 min, natural pH, inhibitor action for 2 min, collector action for 2 min, and flotation time for 3 min. Flotation adopts manual foam scraping, and the foam product and the product in the tank are dried and weighed separately, and the recovery rate is calculated. Under the natural pH value, when the combined collector dosage of sodium oleate+soap (2:3) is 15mg / L, and the dosage of tannic acid is 2.5mg / L, the recovery rate of calcite drops from 71.26% to 5.98%. The recovery of barite dropped only 5.11% to 86.65%, the recovery of dolomite was 5.36%, the rec...

Embodiment 2

[0024] Pure minerals such as barite, calcite, and dolomite were selected and purified by hand, and then ground with an agate grinder. Pure mineral samples with a particle size of -90 μm + 38 μm were taken, washed repeatedly with distilled water, and used as experimental minerals. The mineral flotation test was carried out in a 40 mL hanging tank flotation machine. The amount of test ore sample was 2.0 g each time, stirred for 1 min, natural pH, inhibitor action for 2 min, collector action for 2 min, and flotation time for 3 min. Flotation adopts manual foam scraping, and the foam product and the product in the tank are dried and weighed separately, and the recovery rate is calculated. Under the natural pH value, when the combined collector dosage of sodium oleate+soap (2:3) is 15mg / L, and the dosage of tannic acid is 7.5mg / L, the recovery rate of barite is 84.55%, and the recovery rate of calcite is 84.55%. 3.61%, the recovery rate of dolomite is 3.63%, the recovery rate of qu...

Embodiment 3

[0026] Pure minerals such as barite, calcite, and dolomite were selected and purified by hand, and then ground with an agate grinder. Pure mineral samples with a particle size of -90 μm + 38 μm were taken, washed repeatedly with distilled water, and used as experimental minerals. The mineral flotation test was carried out in a 40 mL hanging tank flotation machine. The amount of test ore sample was 2.0 g each time, stirred for 1 min, natural pH, inhibitor action for 2 min, collector action for 2 min, and flotation time for 3 min. Flotation adopts manual foam scraping, and the foam product and the product in the tank are dried and weighed separately, and the recovery rate is calculated. Under the natural pH value, when the combined collector dosage of sodium lauryl sulfate + sodium dodecylsulfonate (1:1) is 25mg / L, and the dosage of tannic acid is 7.5mg / L, the recovery rate of barite The recovery rate of calcite is 12.93%, the recovery rate of dolomite is 11.79%, the recovery ra...

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Abstract

The invention discloses an inhibitor for effectively inhibiting calcium-containing and silicon-containing minerals in barite ore, and belongs to the field of sulfate mineral flotation. The inhibitor is tannic acid and is added into ore pulp during flotation. In a tannic acid solution with a certain concentration and under the condition of a natural pH value, the infrared spectrum of minerals is measured to show that most tannic acid is adsorbed on the surfaces of calcite and dolomite, and least tannic acid is adsorbed by the surface of barite, showing that the tannic acid selectively inhibitsthe calcite and dolomite which are calcium-containing minerals, so that the collection of the barite by a collecting agent is facilitated. An experiment proves that the tannic acid is used as an inhibitor in a fatty acid and alkyl sulfate collecting system; barite and gangue minerals containing calcium and silicon have a good flotation difference, so that the tannic acid can effectively inhibit the calcite and the dolomite which are calcium-containing minerals in fatty acid and alkyl sulfate collecting systems, and the inhibitor provides a basis for enriching the barite in barite-calcite-dolomite type ore.

Description

technical field [0001] The invention belongs to the technical field of sulfate mineral mining and dressing, and in particular relates to an inhibitor of calcium-containing and silicon-containing minerals in barite ore. Background technique [0002] my country's barite reserves are relatively rich, but with the indiscriminate exploitation of high-grade barite mines in the early stage, most of the barite mines currently have problems such as low grade, fine embedded particle size, and complex mineral composition. How to develop this Barite-like has become the key direction of comprehensive utilization of barite. Enrichment of barite ore with low grade and complex mineral composition by flotation is an important means to develop and utilize this kind of ore. Common gangue minerals in barite mines include calcium-containing calcite and dolomite, silicon-containing minerals quartz and montmorillonite. In order to make reasonable use of barite and improve the grade of barite, it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/008B03D101/06B03D103/02
CPCB03D1/008B03D2201/06B03D2203/02
Inventor 唐云李国辉王珏杨勇姚钰昀马建
Owner GUIZHOU UNIV
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