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Carbonate phosphorite reverse flotation collecting agent and preparation method thereof

A technology of reverse flotation and collector, applied in flotation, solid separation and other directions, can solve the problems of high dosage and cost, low selectivity, poor dispersibility, etc., and achieve low raw material cost, low dosage, The effect of good flotation indicators

Inactive Publication Date: 2013-10-02
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its main disadvantages are low selectivity, poor resistance to hard water, poor dispersion in pulp at room temperature, high dosage and cost

Method used

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  • Carbonate phosphorite reverse flotation collecting agent and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0028] Take 1 part of cotton oil residue after hydroxylation (the hydroxylation reaction is based on the mass ratio of cotton oil residue and sodium hydroxide at a ratio of 1:0.3, and react at 180°C for 4 hours), and 0.6 parts of stearic acid in an autoclave , make 0.5 parts of sodium hydroxide into a solution of any solubility and slowly add it to the autoclave, disperse with appropriate amount of water, adjust the temperature of the reactor to 140 °C, wait for the temperature to stabilize and then react for 6 hours, weigh the product to calculate its solid content, adding water to prepare a solution with a solid content of 2wt% is the reverse flotation collector.

Embodiment 2

[0030] Take 1 part of the product of cotton oil residue after first chlorination and then hydroxylation (chlorination reaction is carried out at 100 °C, chlorine gas is excessive; in the hydroxylation reaction, the mass ratio of cotton oil residue to potassium hydroxide is 1:0.4, in 140°C reaction for 10h), 1 part of palmitic acid, 0.3 parts of modified fatty acid (obtained from industrial oleic acid through chlorination and then hydroxylation, the chlorination reaction is carried out at 100°C, chlorine gas is slightly excessive, and oleic acid is used during hydroxylation Reaction with potassium hydroxide mass ratio of 1:0.3) in the autoclave, make 0.2 parts of sodium hydroxide into a solution of any solubility, then slowly add it to the autoclave, disperse with appropriate amount of water, and adjust the temperature of the autoclave to 180 °C, react for 10 hours after the temperature stabilizes, weigh the product to calculate its solid content, and add water to make a 2wt% so...

Embodiment 3

[0032] Take 1 part of cotton oil residue, 0.8 part of stearic acid, and 0.1 part of modified fatty acid (obtained from industrial oleic acid through chlorination and then hydroxylation, the chlorination reaction is carried out at 100 ° C, chlorine gas is slightly excessive, and the hydroxylation reaction is based on oleic acid Mix with potassium hydroxide at a mass ratio of 1:0.3, react at 160°C for 6h) in an autoclave, make 0.3 parts of sodium hydroxide into a solution of any solubility, slowly add it to the autoclave, disperse with appropriate amount of water, Adjust the temperature of the reactor to 160°C, and react for another 7 hours after the temperature is stable, weigh the product to calculate its solid content, add water to make a 2wt% solution, and then use it as the reverse flotation collector.

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Abstract

The invention relates to a carbonate phosphorite reverse flotation collecting agent and a formula of the carbonate phosphorite reverse flotation collecting agent, in particular to the novel carbonate phosphorite reverse flotation collecting agent which is formed by modified fatty acids and surface active agents in a compound mode. Cotton oil residues or modified cotton oil residues, saturated senior fatty acids, modified fatty acids, strong base A and a moderate amount of water are used as dispersion media to be added to a high-pressure reaction still and react for 4 hours to 10 hours under the temperature between 140 DEG C and 180 DEG C, collecting agent primary substances are obtained, water is added to the collecting agent primary substances to prepare a solution with the 2% solid content by weight in the using process, and then the novel carbonate phosphorite reverse flotation collecting agent is obtained. By-products in the vegetable oil processing process is used as raw materials, the cost of the raw materials is low, a collecting agent can be suitable for low-grade and medium-grade collophanite reverse flotation under the normal temperature, and the separation effect of low-grade and medium-grade collophanite which is difficult to separate is good.

Description

technical field [0001] The invention relates to a novel carbonate phosphate rock reverse flotation collector and its formula, in particular to a carbonate phosphate rock reverse flotation collector compounded by modified fatty acids and surfactants. Background technique [0002] Phosphate rock is one of the most important and non-renewable non-metallic mineral resources in the world. It has important application value and is widely used in agriculture, medicine, biology and other fields. my country is rich in phosphate rock resources, but the grade is generally low and there are few rich ores. Most of them are low- and medium-grade phosphate rocks with high content of harmful impurities. They must be enriched and removed by ore dressing before they can be effectively used. Among them, silicon-calcium sedimentary phosphate rock is one of the more difficult phosphate rocks. It has high impurity content, fine embedded particle size, and poor selectivity. It requires high grindi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/02
Inventor 刘璇黄齐茂潘志权
Owner WUHAN INSTITUTE OF TECHNOLOGY
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