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Method for enriching zinc silicate minerals by reverse flotation under acidic conditions

An acid condition, zinc silicate technology, used in flotation, solid separation and other directions, can solve the problems of complex process structure, high recovery cost, large amount of consumption, etc., and achieve simple process structure, less chemical dosage, and high recovery rate. Effect

Active Publication Date: 2015-09-30
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the conventional flotation process of zinc silicate minerals, after adding gangue mineral inhibitors, fatty acid direct flotation, high-carbon long-chain SH-based collector flotation and other methods are used. These flotation methods are not only compatible with zinc silicate The amount of slime produced during the crushing and grinding process of ore is related to the type and content of gangue minerals, and it is also directly related to the buoyancy of gangue minerals. In this way, not only the recovery process of zinc silicate minerals The process structure is complicated, there are many kinds of chemicals and large dosage, the recovery cost is high, and the recovery rate of zinc silicate minerals is low, which affects the recovery and utilization of zinc silicate mineral resources; currently only high-grade zinc silicate minerals are directly reduced by pyrometallurgy Zinc powder is recycled, and lower-grade zinc silicate minerals have no economic value for recycling

Method used

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  • Method for enriching zinc silicate minerals by reverse flotation under acidic conditions
  • Method for enriching zinc silicate minerals by reverse flotation under acidic conditions
  • Method for enriching zinc silicate minerals by reverse flotation under acidic conditions

Examples

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Effect test

Embodiment 1

[0019] The first example of the method for enriching zinc silicate minerals by reverse flotation under acidic conditions according to the present invention comprises the following steps

[0020] 1. Mineral raw materials:

[0021] The zinc content in the ore used is 11.27%, calcium 15.60%, and iron 12.24%. Phase analysis shows that zinc mainly exists in the form of zinc silicate, gangue minerals mainly exist in the form of carbonate, and some limonite exists.

[0022] 2. The total amount of flotation reagents and operating conditions:

[0023]

[0024] During the flotation process, after the ore is ground until the mineral monomers are dissociated, sulfuric acid is added to adjust the pH value of the slurry to 5.5-6.5, then acidified water glass and sodium thioglycolate are added to suppress zinc silicate minerals, and finally oxidized paraffin wax soap and Sodium dodecyl sulfonate floats gangue minerals, the flotation foam is discarded directly, and the flotation tank is z...

example

[0026] The second example of the method for enriching zinc silicate minerals by reverse flotation under acidic conditions according to the present invention comprises the following steps

[0027] 1. Mineral raw materials:

[0028] The zinc content in the ore used is 14.56%, the calcium content is 13.13%, and the iron content is 10.44%. The phase analysis shows that zinc mainly exists in the form of zinc silicate, and the gangue minerals mainly exist in the form of carbonate, and some brown iron ore.

[0029] 2. The total amount of flotation reagents and operating conditions:

[0030]

[0031] During the flotation process, after the ore is ground until the mineral monomers are dissociated, sulfuric acid is added to adjust the pH value of the slurry to 5.5-6.5, then acidified water glass and sodium thioglycolate are added to suppress zinc silicate minerals, and finally oxidized paraffin wax soap and Sodium dodecyl sulfonate floats gangue minerals, the flotation foam is disc...

Embodiment 3

[0033] The third example of the method for reverse flotation enrichment of zinc silicate minerals under acidic conditions according to the present invention comprises the following steps

[0034] 1. Mineral raw materials:

[0035] The zinc content in the ore used is 17.80%, the calcium content is 10.38%, and the iron content is 7.11%. The phase analysis shows that zinc mainly exists in the form of zinc silicate, and the gangue minerals mainly exist in the form of carbonate, and some brown iron ore.

[0036] 2. The total amount of flotation reagents and operating conditions:

[0037]

[0038] During the flotation process, after the ore is ground until the mineral monomers are dissociated, sulfuric acid is added to adjust the pH value of the slurry to 5.5-6.5, then acidified water glass and sodium thioglycolate are added to suppress zinc silicate minerals, and finally oxidized paraffin soap and Sodium dodecyl sulfonate floats gangue minerals, the flotation foam is discarded...

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Abstract

A method for reverse floatation of an enriched zinc silicate mineral in an acidic condition comprises the following steps: using sulfuric acid as a pH value regulator, using acidified sodium silicate and sodium thioglycollate as an inhibitor for the zinc silicate mineral, and using oxidized paraffin soap and sodium dodecyl sulfate as a collector for the zinc silicate mineral. By the adoption of the method, the zinc silicate mineral can be effectively recycled, and under the condition that the feeding zinc grade is 11.27-17.80%, the zinc silicate concentrate with the grade being 39.24-44.90% and the recycling rate being 82.55-88.20% can be obtained after three-time reverse floatation.

Description

1. Technical field [0001] The invention relates to a reverse flotation enrichment method for oxidized minerals, in particular to a reverse flotation enrichment method for zinc silicate minerals under acidic conditions. 2. Background technology [0002] In the conventional flotation process of zinc silicate minerals, after adding gangue mineral inhibitors, fatty acid direct flotation, high-carbon long-chain SH-based collector flotation and other methods are used. These flotation methods are not only compatible with zinc silicate The amount of slime produced during the crushing and grinding process of ore is related to the type and content of gangue minerals, and it is also directly related to the buoyancy of gangue minerals. In this way, not only the recovery process of zinc silicate minerals The process structure is complicated, there are many kinds of chemicals and large dosage, the recovery cost is high, and the recovery rate of zinc silicate minerals is low, which affects...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03D1/018B03D101/02B03D101/06
Inventor 魏宗武
Owner GUANGXI UNIV
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