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Process for direct flotation and double reverse flotation of low-grade collophanite

A collophosite, low-grade technology, applied in the field of direct double reverse flotation process of low-grade collophosphine, can solve the problems of content reduction, difficult to obtain phosphorus concentrate, etc., and achieve the effect of improving utilization rate

Inactive Publication Date: 2015-08-26
WUHAN INSTITUTE OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In phosphate rock flotation, direct flotation and single reverse flotation can only reduce the content of one of the gangue minerals, and it is difficult to obtain low-magnesium, low-sesquioxide, and low-silicon phosphorus concentrate

Method used

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  • Process for direct flotation and double reverse flotation of low-grade collophanite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of direct double reverse flotation process of low-grade collophosphine, its steps are as follows:

[0019] 1) Take high-sesquioxide silicon-calcium low-grade colloidal phosphate rock, wherein P 2 o 5 The grade is 14.45%, the mass content of MgO is 5.0%, SiO 2 The mass content is 30%, Fe 2 o 3 with Al 2 o 3 The sum of the mass is 5.26%. After crushing and grinding, the mineral monomers are dissociated through crushing and grinding, and the slurry is adjusted to a mass concentration of 20%. Then it flows into the mixing tank, and the amount of 3.0 kg / t raw ore sodium carbonate, 6.0kg / t raw ore water glass, adjust the pH value of the pulp to 9, and then add 3.0kg / t anionic fatty acid soap collector TSM-46 to make slurry, and then enter In the positive flotation operation, aerated flotation is carried out, and phosphate ore, carbonate minerals and some iron-aluminosilicate minerals enter the positive flotation foam product; the positive flotation tailings are i...

Embodiment 2

[0023] A kind of direct double reverse flotation process of low-grade collophosphine, its steps are as follows:

[0024] 1) Take high-sesquioxide silicon-calcium low-grade colloidal phosphate rock, wherein P 2 o 5 The grade is 18.25%, the mass content of MgO is 2.5%, SiO 2 The mass content is 24.56%, Fe 2 o 3 with Al 2 o 3 The sum of the mass is 6.26%. After crushing and grinding, the mineral monomers are dissociated through crushing and grinding, and the slurry is adjusted to a mass concentration of 40%. Then it flows into the mixing tank, and the amount of 8.0 kg / t raw ore sodium carbonate, the dosage is 0.5kg / t raw ore water glass, adjust the pH value of the pulp to 11, and then add the dosage of 0.5kg / t anionic fatty acid soap collector TSM-46 to adjust the slurry. After entering the positive flotation operation for aerated flotation, phosphate ore, carbonate minerals and some iron-aluminosilicate minerals enter the positive flotation foam product; the tank is positi...

Embodiment 3

[0028] A kind of direct double reverse flotation process of low-grade collophosphine, its steps are as follows:

[0029] 1) High-sesquioxide silicon-calcium low-grade colloidal phosphate rock, of which P 2 o 5 The grade is about 23%, the mass content of MgO is 1.0%, SiO 2 The mass content is 12%, Fe 2 o 3 with Al 2 o 3The sum of the mass is 8.26%. After crushing and grinding, the mineral monomers are dissociated, and the slurry is adjusted to a mass concentration of 30%. Then it flows into the mixing tank, and the amount of 5.5 kg / t raw ore sodium carbonate, the dosage is 3.5kg / t raw ore water glass, adjust the pH value of the pulp to 10.25, and then add the dosage of 1.5kg / t anionic fatty acid soap collector TSM-46 to adjust the slurry. After entering the positive flotation operation for aerated flotation, phosphate ore, carbonate minerals and some iron-aluminosilicate minerals enter the positive flotation foam product; the tank is positive flotation tailings;

[0030]...

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Abstract

The invention relates to a process for direct flotation and double reverse flotation of low-grade collophanite. The process comprises the first step of taking high sesquioxide silicon-calcium low-grade collophanite ores, performing crushing ore grinding and slurry mixing and then performing flotation; the second step of performing direct flotation desiliconization and obtaining direct flotation foam products; the third step of performing reverse flotation magnesium removal; and the fourth step of performing reverse flotation iron aluminum silicate mineral removal. Compared with the prior art, the process has the advantages that in phosphorite flotation, the content of only one gangue mineral can be reduced by the adoption of direct flotation and single reverse flotation while the content of silicate minerals, carbonate minerals and iron aluminum silicate minerals can be reduced by the direct flotation and double reverse flotation; low-magnesium low-sesquioxide low-silicon phosphate concentrate can be obtained through the process, mineral separation enrichment of silicon calcium collophanite is achieved successfully, and the utilization rate of phosphorus resources can be improved. The shortcoming that an existing flotation process cannot be applied to mineral separation of silicon-calcium collophanite too high in content of high sesquioxide is overcome.

Description

technical field [0001] The invention relates to a direct, double and reverse flotation process for low-grade collophosphine. Background technique [0002] Phosphate rock is an essential basic raw material for the production of phosphate fertilizers and phosphorus chemical products. my country's phosphate resource reserves are 16.786 billion tons, with an average grade of 16.95%. The high-grade ore that can be directly used can only be mined for more than ten years. Poor dissociation, and high content of gangue minerals such as silicate minerals, carbonate minerals and sesquioxides, its development and utilization is a worldwide problem. In phosphate rock flotation, direct flotation and single reverse flotation can only reduce the content of one of the gangue minerals, and it is difficult to obtain low-magnesium, low-sesquioxide, and low-silicon phosphate concentrate. Contents of the invention [0003] The problem to be solved by the present invention is to provide a more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018
Inventor 罗惠华李亮汤家焰饶欢欢杨婕陈慧瞿定军苗华军侯慧芳张战利
Owner WUHAN INSTITUTE OF TECHNOLOGY
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