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Direct and reverse flotation desliming process of collophanite

A collophosphate and flotation technology, applied in the field of beneficiation, can solve the problems of the influence of recovery rate and concentrate grade, the large content of fine mud in phosphate rock, and the increase in the consumption of flotation chemicals, so as to reduce the consumption of chemicals, The effect of reducing pollution, improving flotation recovery and concentrate grade

Inactive Publication Date: 2012-09-19
云南三明鑫疆磷业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the content of phosphate rock fine sludge entering the flotation process is relatively large. No matter which flotation process is adopted, the consumption of flotation reagents will increase, and the recovery rate and concentrate grade will also be affected.

Method used

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  • Direct and reverse flotation desliming process of collophanite
  • Direct and reverse flotation desliming process of collophanite
  • Direct and reverse flotation desliming process of collophanite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The collophosite desliming flotation process is carried out according to the following steps:

[0025] 1. After crushing and before grinding, the collophosite raw ore enters the ore washing machine for scrubbing, and the raw ore is divided into two parts: coarse-grained and fine-grained according to the particle size;

[0026] 1.1. The coarse-grained part (greater than 0.038 mm) enters the grinding and grading process after passing through the washing machine;

[0027] 1.2. The fine-grained part (less than 0.038 mm) is the fine mud removed after passing through the washing machine, which is the tailings produced by the washing machine;

[0028] 2. Part of the pulp in the coarse-grained grade enters the hydrocyclone for desliming after entering the grinding and classification before flotation;

[0029] 2.1. The sand settling part (greater than 0.038 mm; less than 0.074 mm, accounting for 83.44%) enters the positive and negative flotation process after passing through th...

Embodiment 2

[0035] Using the collophosite desliming flotation process of the present invention, when the pH regulator Na in the prior art 2 CO 3 , Inhibitor Na 2 SiO 3 When the amount of collector and collector is constant, -400 mesh is muddy, and the flotation index is as follows:

[0036]

Embodiment 3

[0038] Using the collophosite desliming flotation process of the present invention, when the pH regulator Na in the prior art 2 CO 3 , Inhibitor Na 2 SiO 3 When the amount of collector and collector is constant, -400 mesh is muddy, and the flotation index is as follows:

[0039]

[0040] In the foregoing examples, along with the reduction of mud content in the collophosite raw ore, the concentrated ore yield increases, and the concentrated ore P 2 o 5 As the grade increases, the beneficiation recovery rate also increases.

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Abstract

The invention discloses a flotation desliming process of collophanite. The flotation desliming process of collophanite comprises the following steps of: scrubbing collophanite crude ore; dividing the crude ore into a coarse fraction part and a fine fraction part according to different particle diameters of particles; feeding the coarse fraction part into a grinding and classification flow after getting the coarse fraction part through an ore washer; feeding into a hydraulic cyclone to deslime for the first time; feeding a settled sand part into a direct and reverse flotation flow after getting the settled sand part through the hydraulic cyclone to obtain flotation concentrate and flotation tailing; removing fine silt from the fine fraction part after getting the fine fraction part throughthe hydraulic cyclone; concentrating and filtering the flotation concentration to obtain finished products phosphate concentrate and concentrate backwater; concentrating and filtering desliming tailing of the ore washer, desliming tailing of the hydraulic cyclone and flotation tailing to obtain phosphorus tailing and tailing backwater; recycling the concentrate backwater and tailing backwater; and returning to each backwater utilization site in the ore washer or a flotation plant. According to the flotation desliming process, the flotation recovery rate and the concentrate grade can be improved, the agent consumption is reduced, and the utilization efficiency of flotation equipment is increased.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a collophosite flotation desliming process. Background technique [0002] At present, collophosphine is the main source of phosphate rock in my country. It has the characteristics of large reserves, low grade, fine particle size, and complex shape and structure. [0003] Flotation is an important method for collophosite mineral processing. Domestic phosphate rock flotation plants mainly have a single positive flotation process, a single reverse flotation process, forward-reverse flotation process, The reverse-direct flotation process and the double reverse flotation process all adopt the process of crushing-grinding-classification-flotation. [0004] Many collophosites contain a large amount of primary fine mud, and the gangue minerals in the ore are closely combined with phosphorus minerals, so fine grinding is required to dissociate the minerals into monomers, and a...

Claims

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Application Information

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IPC IPC(8): B03B7/00
Inventor 张贤敏袁耀瑜杨荣宝张贵张鹏
Owner 云南三明鑫疆磷业股份有限公司
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