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Column separation method and device for high-magnesium-content low-grade phosphate ore

A sorting device, low-grade technology, applied in flotation, solid separation and other directions, can solve the problems of large area of ​​flotation machine, increased maintenance cost and high operating cost

Inactive Publication Date: 2017-01-04
HUBEI YIHUA GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the flotation machine occupies a large area, the process is long, and the operating cost is high. The necessary scraping device, bubble generator and mechanical stirring device increase the maintenance cost.

Method used

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  • Column separation method and device for high-magnesium-content low-grade phosphate ore
  • Column separation method and device for high-magnesium-content low-grade phosphate ore
  • Column separation method and device for high-magnesium-content low-grade phosphate ore

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Experimental program
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Embodiment 1

[0019] Experimental Instruments and Equipment

[0020] List of main equipment 1

[0021]

[0022] Experimental content

[0023] A dolomitic high-magnesium mixed phosphate ore in Yichang was sorted through a single-stage reverse flotation process using a packed flotation column, and the research on different column flotation process tests was carried out to investigate the amount of ore, the height of the trapping area, the amount of washing water and the pulp The influence of process conditions such as concentration on the separation index.

[0024] A column separation method for high-magnesium and low-grade phosphate rock. Firstly, the phosphate rock raw ore is crushed, ore-ground and classified, and the grinding fineness is controlled to be 150-200 mesh > 85%, and the concentration of the phosphate rock slurry is controlled to be 38%. Then introduce the ore slurry into the mineralization tank, and add reverse flotation reagents to fully mix with the ore slurry, and then...

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Abstract

The invention provides a column separation method and device for high-magnesium-content low-grade phosphate ore. The column separation method for the high-magnesium-content low-grade phosphate ore comprises the steps that raw phosphate ore is crushed and graded firstly, ore pulp is guided into a mineralization tank, a reverse flotation reagent is added into the mineralization tank to be fully mixed with the ore pulp, then an obtained mixture is guided into a filling flotation column and enters the flotation column through one or more ore feeding points located on the middle-upper portion of a column body of the flotation column, and ore pulp particles make countercurrent contact with rising bubbles and move downwards along a rising group of tiny bubbles generated by a gas foam maker system; magnesium-containing particles colliding with the bubbles or adhering to the bubbles rise to the top end of the flotation column and finally reach the interface between an ore pulp collecting area and an ore foam removing area to be discharged out of the flotation column; and particles falling to the bottom of the flotation column are low-magnesium-content phosphorus concentrate and are subjected to concentration and sedimentation after being discharged out of the flotation column, so that finished phosphorus concentrate pulp is obtained. According to the column separation method for the high-magnesium-content low-grade phosphate ore, through the countercurrent mineralization method which is higher in efficiency, the concentration capacity is higher and the change of the grade of the ore pulp in the vertical direction of the flotation column is large compared with a mechanical stirring flotation machine.

Description

technical field [0001] The invention relates to a column-type separation method for high-magnesium and low-grade phosphate rock and a used device, belonging to the field of chemical equipment and chemical technology. Background technique [0002] As the reverse flotation agent and pulp mixture enters the packed flotation column, in the trapping zone, the pulp particles are in countercurrent contact with the rising air bubbles, and at the same time, the small channels of the packing can be regarded as tiny packed flotation columns. These channels make The probability of collision between ore particles and air bubbles is greatly increased, thereby accelerating the flotation efficiency. Through "countercurrent mineralization", a more efficient mineralization method, it has a greater selection capacity than mechanical agitation flotation machines, and the grade of ore pulp varies greatly along the vertical column. Therefore, the process of filling flotation columns uses at most ...

Claims

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Application Information

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IPC IPC(8): B03D1/002B03D1/008B03D1/14B03D101/06B03D101/02B03D103/06
CPCB03D1/002B03D1/008B03D1/14B03D2201/02B03D2201/06B03D2203/06
Inventor 蒋远华杨晓勤张战利
Owner HUBEI YIHUA GRP CO LTD
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