Reverse flotation collecting agent of cellophane and preparation method thereof

A collector and reverse flotation technology, used in flotation, solid separation and other directions, can solve the problems of lack of market competitiveness, increased dosage of chemicals, and reduced dispersibility, so as to promote sustainable development and reduce the dosage of chemicals. Less and less cost effective

Inactive Publication Date: 2013-10-23
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the grade of refractory collophosite gradually decreases, the dispersibility of this type of collector decreases at room temperature, the selectivity becomes poor, and the dosage of reagents increases, which gradually loses its market competitiveness.

Method used

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  • Reverse flotation collecting agent of cellophane and preparation method thereof
  • Reverse flotation collecting agent of cellophane and preparation method thereof
  • Reverse flotation collecting agent of cellophane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] According to the molar ratio of α-chlorooleic acid: sodium hydroxide = 1:2 ingredients, add α-chlorooleic acid to an aqueous solution of 10wt% sodium hydroxide and mix, control the reaction temperature to 110°C, react for 2 hours, and cool To obtain sodium α-hydroxy oleate, add sulfuric acid solution to the obtained sodium α-hydroxy oleate to acidify until the pH value is neutral, stir mechanically for 2 hours, wash with hot water, and separate layers to obtain α-hydroxy oleic acid. Take 1 kg of α-hydroxy oleic acid, 0.2 kg of sodium hydroxide (formed as a 16.67% aqueous solution), and 1 kg of lauric acid in a reactor at a temperature of 60° C., and mechanically stir for 2 hours to obtain the basic substance. Add water to make it into an aqueous solution with a solid content of 2wt%, which is the reverse collector.

[0024] Taking a high-magnesium refractory collophosite in Yichang as an ore sample, the chemical composition of the raw ore is:

[0025]

[0026] Use t...

Embodiment 2

[0031] According to the molar ratio of α-chlorooleic acid: sodium hydroxide = 1:2.5 ingredients, add α-chlorooleic acid to the aqueous solution of 35wt% sodium hydroxide and mix, control the reaction temperature to 150 ° C, react for 3 hours, and cool To obtain sodium α-hydroxy oleate, add the obtained sodium α-hydroxy oleate to sulfuric acid solution to acidify until the pH value becomes neutral, stir mechanically for 3 hours, wash with hot water, and separate by layers to obtain α-hydroxy oleic acid. Take 2.5kg of α-hydroxyoleic acid, 0.5kg of sodium hydroxide (33.33% aqueous solution), 0.1kg of oleic acid, and 1kg of palmitic acid in a reactor at a temperature of 75°C and mechanically stir for 3 hours to obtain the basic substance. Adding water to make it 2wt% aqueous solution is the reverse collector.

[0032] Taking middle and low-grade high-calcium-magnesium carbonate-type collophanite in Haikou, Yunnan Province as the ore sample, the chemical composition of the raw ore ...

Embodiment 3

[0039] According to the molar ratio of α-chlorooleic acid: sodium hydroxide = 1:5 ingredients, add α-chlorooleic acid to an aqueous solution of 75wt% sodium hydroxide and mix, control the reaction temperature to 160 ° C, react for 5 hours, and cool To obtain sodium α-hydroxy oleate, add sulfuric acid solution to the obtained sodium α-hydroxy oleate to acidify until the pH value is neutral, stir mechanically for 5 hours, wash with hot water, and separate layers to obtain α-hydroxy oleic acid. Take 5 kg of α-hydroxy oleic acid, 1.5 kg of potassium hydroxide (33.33% aqueous solution), 1 kg of oleic acid, and 1 kg of stearic acid in a reactor at a temperature of 95° C. and mechanically stir for 5 hours to obtain the basic substance. Adding water to make it 2wt% aqueous solution is the reverse collector.

[0040] Taking Mabian high-magnesium collophosite in Sichuan as the ore sample, the chemical composition of the raw ore is:

[0041]

[0042] Use this collector to carry out s...

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Abstract

The invention relates to a reverse flotation collecting agent of collophane, and particularly to the collecting agent manufactured by the compounding and combination of modified fatty acid, strong alkali solution, and fatty acid, and a preparation method thereof. The method comprises the following steps: mixing raw materials of 1-5 parts of Alpha-hydroxy oleinic acid, 0.2-1.5 parts of strong alkali A, 0-1 parts of oleinic acid, and 1 parts of saturated higher fatty acid in parts by weight, wherein the temperature is controlled between 60-95 DEG C, and the mechanical stirring is 2-5 hours, so as to obtain basic materials; when in use, adding water to preparing 2 wt%-50 wt% water solution. The combination collecting agent obtained by the compounding of Alpha-hydroxy oleinic acid, strong alkali, oleinic acid, and saturated higher fatty acid has the advantages that the ordinary temperature selectivity is strong, the dispersivity is good, the medicine dosage is small, the cost is low, the beneficiation overall efficiency is obviously improved.

Description

technical field [0001] The invention relates to a collophosite reverse flotation collector, in particular to a collector composed of a modified fatty acid, a strong alkali solution and a fatty acid and a preparation method thereof. Background technique [0002] my country is rich in phosphate rock resources, ranking third in the world in terms of reserves, but the grade is generally low. Most of them are middle and low-grade collophosphine, which contains high levels of harmful impurities. They must be enriched and removed by beneficiation before they can be effectively used. In the beneficiation process, the refractory collophosite with high MgO content is mainly produced by reverse flotation. However, the gangue minerals in this kind of minerals are densely embedded in particle size, difficult to dissociate, and the mineral particle size is fine, resulting in poor ore separation and difficult mineral processing. Therefore, whether to improve the selectivity of reagents to...

Claims

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Application Information

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