A low-grade refractory weathered collophosite desliming flotation process in stages

A low-grade, colloidal phosphate rock technology, used in flotation, solid separation, wet separation, etc., can solve the problems of interference in the flotation process, deterioration of the separation environment, and high content of fine particles, avoiding interference and improving treatment. the effect of reducing pollution

Inactive Publication Date: 2017-06-27
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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Problems solved by technology

[0004] The useful mineral particles in the low-grade collophosphine in some areas of my country are fine, the minerals are tightly embedded, and there are many harmful impurities, which lead to a high content of fine particles and a high degree of mudification in the flotation feed, which deteriorates the separation environment and causes the flotation process to be affected. interference

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  • A low-grade refractory weathered collophosite desliming flotation process in stages

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A sub-stage desliming and flotation process of low-grade refractory weathered collophosite, which is carried out according to the following steps:

[0029] (1) Gravity separation and desliming: first take 1000g of finely crushed phosphate rock sample, pour it into the washing machine, then add 20ml of water glass with a mass volume concentration of 10%, and finally fill the washing machine with water for stirring and scrubbing After 10 minutes, the scrubbed slurry enters the ore shaker for desliming treatment to obtain coarse minerals and fine mud;

[0030] (2) Flotation desliming: Grinding the coarse-grained minerals obtained by the shaking table to obtain a slurry with a mass fraction of -0.074mm accounting for 92.5%, then adding to the flotation machine, adding No. 2 oil 80g / t and stirring for 3 minutes, aerating Scraping to get flotation slime and underflow. (3) Positive and negative flotation: adopting an appropriate reagent system, under the condition of flotatio...

Embodiment 2

[0033] A sub-stage desliming and flotation process of low-grade refractory weathered collophosite, which is carried out according to the following steps:

[0034] (1) Gravity separation and desliming: first take 1000g of finely crushed phosphate rock sample, pour it into the washing machine, then add 25ml of water glass with a mass volume concentration of 10%, and finally fill the washing machine with water for stirring and scrubbing After 15 minutes, the scrubbed slurry enters the ore shaker for desliming treatment to obtain coarse minerals and fine mud;

[0035] (2) Desliming by flotation: Grinding the coarse-grained minerals obtained by the shaking table to obtain a pulp with a mass fraction of -0.074mm accounting for 95%, then adding it to the flotation machine, adding No. 2 oil 100g / t and stirring for 3 minutes, aerating Scraping to get flotation slime and underflow;

[0036] (3) Positive and negative flotation: adopt the appropriate reagent system, under the condition o...

Embodiment 3

[0039] A sub-stage desliming and flotation process of low-grade refractory weathered collophosite, which is carried out according to the following steps:

[0040] (1) Gravity separation and desliming: first take 1000g of finely crushed phosphate rock sample, pour it into the washing machine, then add 22ml of water glass with a mass volume concentration of 10%, and finally fill the washing machine with water for stirring and scrubbing After 12 minutes, the scrubbed slurry enters the ore shaker for desliming treatment to obtain coarse minerals and fine mud;

[0041] (2) Desliming by flotation: Grinding the coarse-grained minerals obtained by the shaking table to obtain a pulp with a mass fraction of -0.074mm accounting for 93.8%, then adding to the flotation machine, adding No. 2 oil 90g / t and stirring for 2.5min, Inflate and scrape bubbles to obtain flotation slime and underflow;

[0042] (3) Positive and negative flotation: adopt the appropriate reagent system, under the condit...

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Abstract

The present invention is a segmental desliming and flotation process of low-grade refractory weathered collophosphine. The process steps are as follows: raw ore is coarsely crushed and finely crushed, then added with a surface treatment agent, and scrubbed in an ore washing machine; the pulp after scrubbing is Enter the shaking table for one stage of desliming, coarse minerals enter the next stage of desliming, and fine sludge is treated as ore slime; coarse minerals are subjected to grinding treatment, and the grinding pulp is subjected to second stage desliming; the deslimed ore pulp enters the positive and negative floating The flotation concentrate and flotation tailings are obtained; the flotation concentrate is concentrated and filtered to obtain phosphorus concentrate products and concentrate backwater, and the positive flotation tailings and reverse flotation tailings are respectively concentrated and filtered to obtain Tailings products and tailings return water, the slime deslimed in the two stages are concentrated and filtered to obtain slime products and slime return water; according to needs, the concentrate return water, tailings return water and slime return water are recycled Respectively return to the flotation operation and each return point of the ore washing machine for recycling; the invention can improve the quality of phosphorus concentrate and realize the resource utilization of low-grade weathered collophosite.

Description

technical field [0001] The invention belongs to the collophosite flotation technology, in particular to a segmental desliming flotation process of low-grade refractory weathered collophosite. Background technique [0002] At present, flotation is a main method of collophosite beneficiation, and flotation methods include direct flotation, reverse flotation, positive and negative (inverse) flotation and double reverse flotation, etc. For example: the publication date is 2014.12.03, and the publication number is CN104174504A. The Chinese invention patent document is named "Middle and low grade mixed refractory colloid ore positive flotation and branch flotation method". The specific process of this method is: (1) The mixed collophosite is crushed and ground until the monomers are dissociated; (2) Add positive flotation regulators such as sodium carbonate and water glass and fatty acid anion collectors to the slurry to adjust the slurry and mineralize it, and then inflate it for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/00B03B5/04
Inventor 程仁举李成秀陈炳炎廖祥文刘星罗惠华刘飞燕余滔张海峰
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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