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Floating depressing agent for reducing silicon dioxide in zinc ore concentrate

A silica and inhibitor technology, applied in flotation, solid separation, etc., can solve the problems of low zinc concentrate grade, poor silica separation effect, high impurity content, etc., to increase the recovery rate of target minerals, The effect of reducing the frequency of zinc selection and using less

Active Publication Date: 2013-02-13
WESTERN MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The zinc concentrate selected in China has low grade and high impurity content, especially the separation effect of silica is not good. How to use the zinc resource with low grade and complex composition and the technology to solve the high silicon content of zinc concentrate by beneficiation no record

Method used

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Examples

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preparation example Construction

[0010] The preparation method comprises the following steps: 1) Spread the sodium carboxymethyl cellulose powder evenly on plastic paper with a thickness of 1-2 cm; 2) Put methyl silicone oil and kerosene into a sprayer and spray evenly on the flat surface Spread in the sodium carboxymethyl cellulose powder on the plastic paper, and mix well; 3) Put it into a plastic-lined woven bag and place it for more than 24 hours; 1 part and 1 part of water glass are formulated into an aqueous solution with a concentration of 1 to 5%, and the mixed solution is kept stirring for 30 minutes, and the inhibitor is directly added to the beneficiation process of zinc ore.

[0011] The use method is that the mixed solution prepared in the above manner is directly added to the lead-zinc ore beneficiation process. The inhibitor of the present invention is suitable for immediate use and preparation.

Embodiment 1

[0013] In this embodiment, the minerals selected are from sedimentary-reformed strata-bound deposits, and the material composition is relatively complex, containing useful elements such as lead, zinc, and iron. The main minerals of lead and zinc are galena, sphalerite, white lead and smithsonite. The particle size of sphalerite is coarser than that of galena, and the main gangue minerals are distributed unevenly in thickness; , the aggregates are disseminated, and a small amount is distributed in veins between mineral grains and fissures. Raw ore grade: Zn: 8.5%, SiO 2 : 75-79%, S: 5%.

[0014] Zinc ore operation process is: first roughing, second sweeping, second beneficiation to produce zinc concentrate; operating chemicals: copper sulfate 500g / t, butyl xanthate 60g / t, the above chemicals are based on the original process Flow process is added; The present invention is 1 part of sodium carboxymethylcellulose of 8.5wt% by weight percentage, 1 part of methyl silicone oil of...

Embodiment 2

[0019] The main metal minerals of ore selected in this embodiment are: sphalerite, pyrite, galena; followed by pyrrhotite, white leadite, smithsonite, limonite; and a small amount of marcasite , chalcopyrite, copper blue, tetrahedrite; gangue minerals mainly include: calcite, quartz, feldspar, sericite and so on. The raw ore properties of this ore are relatively complex, the oxidation rate is high, the formation time of sphalerite, galena, and pyrrhotite is similar, the solid solution structure is common, and the contact boundaries between them are staggered and wrapped with each other. It is relatively easy to achieve monomer dissociation through grinding. These factors are the important reasons for the high zinc content and low grade of lead concentrate; in addition, the sphalerite contains uneven iron, and part of the sphalerite fills along gangue cracks and crushed pyrite cracks, forming a shape Irregular fine veins and fine particles are embedded in the gangue, and this p...

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Abstract

The invention relates to chemical industry, in particular to a preparation method of a flotation inhibitor for reducing silicon dioxide in zinc ore concentrates. The flotation inhibitor for reducing the silicon dioxide in the zinc ore concentrates is composed of raw materials of one part of sodium carboxymethyl cellulose with the weight percent content of 48.5 percent by weight, one part of methyl silicone oil with 0.5 percent by weight, one part of kerosene with 1 percent by weight and one part of water glass with 50 percent by weight. The flotation inhibitor for reducing the silicon dioxide in the zinc ore concentrates can significantly reduce the content of the silicon dioxide in the zinc ore concentrates, significantly improve separation indicators, increase the recovery rate of target minerals, reduce the selection times of the zinc and shorten the flotation process by being used in the flotation process of zinc operation in lead and zinc ores. The flotation inhibitor for reducing the silicon dioxide in the zinc ore concentrates is applicable to the flotation process of the zinc operation in the lead and the zinc ores.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a preparation method and application method of a flotation inhibitor for reducing silicon dioxide in zinc concentrate. Background technique [0002] Zinc hydrometallurgy has the advantages of high product purity, good comprehensive recovery, and good working conditions. Over the past 20 years, the zinc smelting plants built abroad all adopt the hydrometallurgical zinc smelting process, so the demand for zinc concentrate resources is also increasing. With the development of zinc ore resources, the high-quality ore of zinc is decreasing day by day, and silicon is generally high. Silicon mainly affects the supernatant sedimentation velocity of each process in the hydrometallurgy process, and the supernatant rate and underflow filtration performance are reduced, and the metal recovery rate is corresponding. Reduced, hindering the normal progress of production. [0003] At present, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/016B03D103/04B03D101/06
Inventor 林大泽张永德肖云何承勇
Owner WESTERN MINING CO LTD
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