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A kind of method of reverse flotation zinc silicate

A zinc silicate and reverse flotation technology, applied in flotation, solid separation and other directions, can solve the complex process of recovering zinc silicate minerals, affecting the recovery and utilization of zinc silicate mineral resources, and the low recovery rate of zinc silicate minerals. problems, to achieve the effect of low grinding fineness requirements, low cost and high recovery rate

Active Publication Date: 2018-03-30
HUBEI FORBON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the conventional flotation process of zinc silicate minerals, after adding gangue mineral inhibitors, fatty acid direct positive flotation and other methods are used. It is related to the amount of zinc silicate minerals, the type and content of gangue minerals, and the buoyancy of gangue minerals. In this way, not only the process of recycling zinc silicate minerals is complicated, but also the types of agents and the dosage are large, and the recovery cost High, and the recovery rate of zinc silicate minerals is low, which affects the recovery and utilization of zinc silicate mineral resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1. Implement minerals:

[0020] The content of zinc in the ore used is 10.89%, calcium is 15.36%, zinc mainly exists in the form of zinc silicate, and gangue minerals mainly exist in the form of carbonate.

[0021] 2. Steps and the dosage of each drug

[0022] 1) During flotation, the pH value of the slurry is adjusted to 4.7 with sulfuric acid,

[0023] 2) Use acidified water glass and sodium thioglycolate as zinc silicate mineral inhibitor,

[0024] 3) Use diethyl phthalate as a foaming agent,

[0025] 4) make the collector of gangue minerals with sodium stearate,

[0026] 5) The dosage of the agent is: 6kg / t for sulfuric acid, 3kg / t for acidified water glass, 0.3kg / t for sodium thioglycolate, 3g / t for diethyl phthalate, and 400g / t for sodium stearate.

[0027] 6) During the flotation process, add sulfuric acid to adjust the pH value of the dissociated pulp to 4.7, add acidified water glass and sodium thioglycolate to inhibit zinc silicate, and then add diethyl ph...

Embodiment 2

[0029] 1. Implement minerals:

[0030] The content of zinc in the ore used is 12.65%, calcium is 15.68%, zinc mainly exists in the form of zinc silicate, and gangue minerals mainly exist in the form of carbonate.

[0031] 2. Steps and Dosage

[0032] 1) During flotation, the pH value of the slurry is adjusted to 4.6 with sulfuric acid,

[0033] 2) Use acidified water glass and sodium thioglycolate as zinc silicate mineral inhibitor,

[0034] 3) Use diethyl phthalate as a foaming agent,

[0035] 4) make the collector of gangue minerals with sodium stearate,

[0036] 5) The dosage of the agent is: 8kg / t for sulfuric acid, 2kg / t for acidified water glass, 0.1kg / t for sodium thioglycolate, 4g / t for diethyl phthalate, and 300g / t for sodium stearate

[0037] 6) During the flotation process, add sulfuric acid to the dissociated pulp to adjust the pH value to 4.6, add acidified water glass and sodium thioglycolate to inhibit zinc silicate, and then add diethyl phthalate for foamin...

Embodiment 3

[0039] 1. Implement minerals:

[0040] The content of zinc in the ore used is 14.65%, calcium is 15.68%, zinc mainly exists in the form of zinc silicate, and gangue minerals mainly exist in the form of carbonate.

[0041] 2. Steps and Dosage

[0042] 1) During flotation, the pH value of the slurry is adjusted to 4.5 with sulfuric acid,

[0043] 2) Use acidified water glass and sodium thioglycolate as zinc silicate mineral inhibitor,

[0044] 3) Use diethyl phthalate as a foaming agent,

[0045] 4) make the collector of gangue minerals with sodium stearate,

[0046] 5) The dosage of the agent is: 12kg / t for sulfuric acid, 4kg / t for acidified water glass, 0.2kg / t for sodium thioglycolate, 5g / t for diethyl phthalate, and 500g / t for sodium stearate

[0047] 6) During the flotation process, add sulfuric acid to the dissociated pulp to adjust the pH value to 4.5, add acidified water glass and sodium thioglycolate to inhibit zinc silicate, and then add diethyl phthalate for foami...

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Abstract

The invention relates to a reverse flotation method for zinc silicate. The method includes the following steps that sulfuric acid serves as a pH value adjusting agent; acidified sodium silicate and sodium thioglycollate serve as a zinc silicate inhibiting agent; diethyl phthalate serves as a foaming agent; sodium stearate serves as a collecting agent of gangue minerals; in the flotation process, after sulfuric acid is added into ore pulp with monomers separated to adjust the pH value to 4.5 to 5.0, acidified sodium silicate and sodium thioglycollate are added to inhibit zinc silicate; then, diethyl phthalate is added to serve as the foaming agent; sodium stearate is added to serve as the collecting agent of gangue minerals; flotation froth serves as tailings; and zinc silicate concentrate exists in a flotation tank. By means of the reverse flotation method, zinc silicate minerals can be effectively recycled, and zinc silicate concentrate with the zinc concentrate grade being 41-46% and the recycling rate being 90% or higher can be obtained through rough floatation and sweeping flotation under the condition that the grade of feeding ore zinc is 10-18%.

Description

technical field [0001] The invention relates to a zinc silicate flotation method using gangue minerals as carbonate minerals, in particular to a method for reverse flotation of zinc silicate minerals under acidic conditions. Background technique [0002] In the conventional flotation process of zinc silicate minerals, after adding gangue mineral inhibitors, fatty acid direct positive flotation and other methods are used. It is related to the amount of zinc silicate minerals, the type and content of gangue minerals, and the buoyancy of gangue minerals. In this way, not only the process of recycling zinc silicate minerals is complicated, but also the types of agents and the dosage are large, and the recovery cost High, and the recovery rate of zinc silicate minerals is low, which affects the recovery and utilization of zinc silicate mineral resources. Contents of the invention [0003] The purpose of the present invention is to provide a method for reverse flotation zinc si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03D1/018B03D1/12B03D101/02B03D101/04B03D101/06B03D103/02
Inventor 王仁宗左大学刘裕
Owner HUBEI FORBON TECH
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