Carbonate phosphorite reverse flotation combined collecting agent and preparation method thereof

A combined collector and reverse flotation technology, used in flotation, solid separation, etc., can solve the problems of difficulty in achieving activity and selectivity, and achieve the effects of low beneficiation cost, strong collection capacity and low production cost.

Inactive Publication Date: 2012-06-27
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the principle of drug activity-selectivity, it is difficult for a single drug to achieve both activity and selectivity. One of the important ways to solve this problem for existing drugs is to mix drugs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Take 0.5 kg of natural jatropha seed oil fatty acid sulfated soap, 0.5 kg of industrial soap flakes with a fatty acid content greater than 78%, and 0.02 kg of Tween-20, add 50 kg of water and mix well to obtain a combined collector. For reverse flotation of calcium (magnesium) phosphorite, the flotation process conditions are as follows:

[0020] (1) Ore pre-treatment: 70% of the ore with a selected grade of 25-26% is crushed and wet ball milled to -200 mesh, and the pulp concentration is 75%;

[0021] (2) Primary roughing for magnesium removal: add 200g raw ore to 0.5L flotation cell, add 0.5L tap water to adjust slurry for 2min; first add inhibitor sulfuric acid 16.00kg / t, stir for 3min; then add combined collector 0.40kg / t t, stirring for 3 minutes; after inflating and bubbling, carbonate gangue minerals were removed by reverse flotation at room temperature, and the scraping time was 4 minutes.

[0022] With the reverse flotation magnesium removal collector configur...

Embodiment 2

[0024] Take 0.4 kg of natural jatropha seed oil fatty acid sulfated soap, 0.6 kg of industrial soap grains with a fatty acid content greater than 78%, and 0.04 kg of Tween-40, add 50 kg of water and mix well to obtain a combined collector. The calcium (magnesium) phosphorite is subjected to reverse flotation, and the flotation process conditions are carried out according to (1) and (2) in Example 1.

[0025] With the reverse flotation magnesium removal collector configured in Example 2 and the flotation process, raw ore P 2 o 5 Carbonate phosphate rock with a grade of 25.19% is enriched into concentrate P 2 o 5 The grade is 34.79%, the MgO content is 1.02%, and the concentrate P 2 o 5 The recovery rate is an excellent indicator of 91.23%.

Embodiment 3

[0027] Take 0.3 kg of natural Jatropha curcas seed oil fatty acid sulfated soap, 0.7 kg of daily-use soap with fatty acid content not less than 50%, 0.06 kg of Tween-60, add 50 kg of water and mix well to obtain a combined collector. Reverse flotation of calcium (magnesium) phospholithite was carried out with the same agent, and the flotation process conditions were carried out according to (1) and (2) in Example 1.

[0028] With the reverse flotation demagnesium collector configured in Example 3 and the flotation process, raw ore P 2 o 5 Carbonate phosphate rock with a grade of 25.13% is enriched into concentrate P 2 o 5 The grade is 34.87%, the MgO content is 1.04%, the concentrate P 2 o 5 The recovery rate is an excellent indicator of 91.87%.

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Abstract

The invention discloses a carbonate phophorite reverse flotation combined collecting agent and a preparation method thereof. The collecting agent is a compound anion collecting agent and is formed by mixing basic substance with water, wherein the basic substance mainly comprises the following components in parts by weight: 0.2-0.5 part of higher fatty acid sulfated soap containing unsaturated fatty acid, 0.5-0.8 part of higher fatty acid saponified matter with the fatty acid content of being not more than 50% and 0.01-0.1 part of foaming agent, and the ratio of the basic substance to the water in parts by weight is 1: (20-70). The combined collecting agent has the advantages of strong collecting capability, high selectivity, low dosage, low temperature resistance and the like and is applied to carbonate phophorite reverse flotation with the P2O5 grade of being 25-26%, the P2O5 grade of the obtained concentrate is more than 34%, MgO content is less than 1.2%, and P2O5 recovery rate of the concentrate is more than 90%. The invention has the characteristics of simple preparation process, easy operation, high concentrate P2O5 recovery rate, low MgO content in the concentrate and low flotation cost and is applicable to flotation production of carbonate phophorite and various phosphate ores.

Description

technical field [0001] The invention relates to a phosphate rock flotation collector, in particular to a carbonate phosphate rock reverse flotation combined collector and a preparation method thereof. Background technique [0002] Phosphate rock is the main mineral raw material for fertilizer, chemical industry and other related industries. It is a national strategic mineral resource and plays an important role in consolidating the basic position of agriculture and the development of the national economy. The full and reasonable utilization of my country's phosphate rock has far-reaching significance for the sustainable development of my country's phosphate rock resources. MgO, CaO and CO in carbonate-type phosphate rock 2 The content is generally high, MgO makes the viscosity of the material processed by acid method increase sharply, and the product quality deteriorates; CaO and CO 2 Increase acid consumption and product foam during acid processing, increase power consump...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/02B03D101/04
Inventor 宋宝安徐伟杨松胡德禹薛伟张仁忠陈跃解田兰丰
Owner GUIZHOU UNIV
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