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A kind of slime flocculant and its preparation method and application

A flocculant and application technology, applied in the direction of selective deposition method, solid separation, etc., can solve the problems of affecting the sorting efficiency, the improvement of foam is not large, and the dosage of chemicals is large, so as to achieve simple preparation process, improve flotation foam, increase sorting effect

Active Publication Date: 2019-11-19
BLUESTAR LEHIGH ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the positive flotation desiliconization process is used in industry, there are many disadvantages: the acidity and alkalinity of the pulp vary greatly during flotation, the return water is difficult to process and utilize, flotation is affected by temperature, and the dosage of chemicals is large.
However, these flocculations have various disadvantages in reverse flotation desiliconization. The flocculation effect is relatively limited when the inorganic flocculation is used, and the foam is not improved much. Collector sorting, affecting the sorting efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1, a kind of slime flocculant, the flocculant is formed by polymerizing aluminum oxide and phosphoric acid under acidic conditions to form an acidic aluminum phosphate polymer. The acid aluminum phosphate polymer has a multi-branched structure.

Embodiment 2

[0018] Example 2, a preparation method of the slime flocculant as described in Example 1: Dissolving alumina solids in phosphoric acid solution at 30°C for a stirring reaction, adding sulfuric acid to control the pH of the reaction system = 3, Perform secondary stirring reaction at 50°C to obtain the desired flocculant. The mass concentration of the phosphoric acid solution is 30%.

[0019] The mass ratio of the solid alumina to the phosphoric acid solution is 1:1.5. The time for the first stirring reaction is 1 hour, and the time for the second stirring reaction is 3 hours. The obtained slime flocculant is used as a flocculant in reverse flotation and desiliconization of collophosite to improve flotation foam and mineral separation. And the dosage of the flocculant is 200 g / t raw ore.

Embodiment 3

[0020] Example 3, a preparation method of the slime flocculant as described in Example 1: dissolving alumina solids in phosphoric acid solution at 50°C for a stirring reaction, adding sulfuric acid to control the pH of the reaction system = 4, Perform secondary stirring reaction at 80°C to obtain the desired flocculant. The mass concentration of the phosphoric acid solution is 50%.

[0021] The mass ratio of the solid alumina to the phosphoric acid solution is 1:2.5. The time for the first stirring reaction was 2 hours, and the time for the second stirring reaction was 5 hours. The obtained slime flocculant is used as a flocculant in reverse flotation and desiliconization of collophosite to improve flotation foam and mineral separation. And the dosage of the flocculant is 1000 g / t raw ore.

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PUM

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Abstract

The invention discloses an ore slurry flocculating agent. The ore slurry flocculating agent is an acid aluminum phosphate polymer which is formed through polymerization of aluminum oxide and phosphoric acid under an acidic condition. The invention further discloses a preparation method of the ore slurry flocculating agent. The preparation method of the ore slurry flocculating agent comprises the steps that solid aluminum oxide is dissolved in a phosphoric acid solution for a stirring reaction at the temperature of 30-50 DEG C, sulfuric acid is added for controlling the pH value of a reaction system to 3-4, a stirring reaction is conducted at the temperature of 50-80 DEG C, and thus the acid aluminum phosphate polymer of a branched structure is obtained. The ore slurry flocculating agent can be used for selective flocculation-flotation during reverse flotation of collophanite, flotation froth can be improved, and a reverse-flotation desilicication process can be conducted smoothly; and the ore slurry flocculating agent can restrain the collophanite to a certain extent, and flotation indexes can be optimized.

Description

technical field [0001] The invention relates to an ore slime flocculant, which is mainly used in the reverse flotation desiliconization of siliceous-calcareous collophosite; the invention also relates to the ore slime flocculant and its preparation method and application. Background technique [0002] my country is rich in phosphate rock resources, and its prospective reserves rank second in the world. However, there are large differences in the quality and selectivity of phosphate rock in my country. my country's phosphate rock resources are rich but not rich, and there are many low-grade ore. 85% of the proven reserves are middle and low grade sedimentary gluphosite. The key to the development and utilization of phosphate rock is to solve the flotation problem of middle and low grade collophosite. For this kind of ore utilization, carbonate and silicate gangue impurities must be discharged at the same time during the flotation process, so as to meet the requirements of pho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D3/06
CPCB03D3/06
Inventor 刘养春徐会会杨勇刘国举刘云涛
Owner BLUESTAR LEHIGH ENG INST CO LTD