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Method for preparing compounded collecting agent of vegetable fatty acid diethanolamide ester soap

A technology of fatty acid diethanolamide ester and fatty acid diethanolamine, which is applied in solid separation, flotation and other directions, can solve the problems of low temperature flotation effect, poor mineral processing performance and high mineral processing cost, achieve good chemical stability and reduce mineral processing cost , the effect of high flotation efficiency

Inactive Publication Date: 2013-05-08
WUHAN INSTITUTE OF TECHNOLOGY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In phosphate rock flotation, the existing collectors have poor beneficiation performance, low temperature flotation effect, large amount of existence, and low selectivity, which makes the beneficiation cost high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Weigh 150g of corn oil fatty acid with an iodine value of 120 and 50g of diethanolamine (molar ratio 1.13:1) into a flask, then put the flask into a constant temperature oil bath with magnetic stirring, start stirring and heat up to 100 °C, carry out amide esterification reaction, react for 1 hour, then cool down to 70 °C for use;

[0023] C 17 h 33 COOH+NH(CH 2 CH 2 Oh) 2 C 17 h 33 CON(C 2 h 4 Oh) 2 +H 2 O,

[0024] Then weigh 30g sodium hydroxide and dissolve it in 100g water, control the temperature at 65°C, put it into a pear-shaped bottle, transfer the reacted fatty acid diethanolamide to a 500ML beaker, start stirring and slowly add sodium hydroxide solution to make it Carry out saponification reaction with unreacted oleic acid in the amide esterification reaction, the saponification reaction temperature is controlled at 80 ° C, and the stirring time is 20 minutes;

[0025] C 17 h 33 COOH+NaOH C 17 h 33 COONa+H 2 o

[0026] 2) Weigh 165...

Embodiment 2

[0031] 1) Weigh 280g of soybean oil fatty acid with an iodine value of 90 and 50g of diethanolamine (molar ratio 2:1) into a flask, then put the flask into a constant temperature oil bath with magnetic stirring, start stirring and heat up to 100 °C, carry out amide esterification reaction, react for 1 hour, then cool down to 70 °C for use;

[0032] C 17 h 33 COOH+NH(CH 2 CH 2 Oh) 2 C 17 h 33 CON(C 2 h 4 Oh) 2 +H 2 O,

[0033] Then weigh 60g of sodium hydroxide and dissolve it in 200g of water, control the temperature at 65°C, put it into a pear-shaped bottle, transfer the reacted fatty acid diethanolamide to a 500ML beaker, start stirring and slowly add sodium hydroxide solution to make it Carry out saponification reaction with unreacted oleic acid in the amide esterification reaction, the saponification reaction temperature is controlled at 80 ° C, and the stirring time is 20 minutes;

[0034] C 17 h 33 COOH+NaOH C 17 h 33 COONa+H 2 o

[0035] 2) Weigh ...

Embodiment 3

[0040] 1) Weigh 280g of cotton oil fatty acid with an iodine value of 135 and 26g of diethanolamine (molar ratio 4:1) in a flask, then put the flask into a constant temperature oil bath with magnetic stirring, start stirring and heat up to 100 °C, carry out amide esterification reaction, react for 1 hour, then cool down to 70 °C for use;

[0041] C 17 h 33 COOH+NH(CH 2 CH2 Oh) 2 C 17 h 33 CON(C 2 h 4 Oh) 2 +H 2 O,

[0042] Then weigh 60g of sodium hydroxide and dissolve it in 200g of water, control the temperature at 65°C, put it into a pear-shaped bottle, transfer the reacted fatty acid diethanolamide to a 500ML beaker, start stirring and slowly add sodium hydroxide solution to make it Carry out saponification reaction with unreacted oleic acid in the amide esterification reaction, the saponification reaction temperature is controlled at 80 ° C, and the stirring time is 20 minutes;

[0043] C 17 h 33 COOH+NaOH C 17 h 33 COONa+H 2 o

[0044] 2) Weigh 283...

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Abstract

The invention relates to a method for preparing a compounded collecting agent of vegetable fatty acid diethanolamide ester soap. The method comprises the following steps of: 1) performing amide esterification reaction on fatty acid with an iodine value of 85 to 135 and diethanolamine, performing saponification reaction on an obtained reaction product and 30 mass percent of sodium hydroxide solution, and thus obtaining fatty acid diethanolamine and a fatty acid soap mixture thereof; 2) performing the saponification reaction on raw materials such as the fatty acid with the iodine value of 120 to 135 and sodium hydroxide or sodium carbonate, and thus obtaining fatty acid soap; and 3) mixing the fatty acid diethanolamine and the fatty acid soap mixture thereof obtained in the step 1) with the fatty acid soap obtained in the step 2) to obtain fatty acid diethanolamide ester soap, compounding a surfactant into the fatty acid diethanolamide ester soap, and thus obtaining the compounded collecting agent of the vegetable fatty acid diethanolamide ester soap. By adoption of the method, phosphorus selectivity is obviously improved, flotation temperature is reduced, floatation efficiency is high, and the raw materials are easy to purchase and low in cost.

Description

technical field [0001] The invention relates to a preparation method of a vegetable fatty acid diethanolamide ester soap compound collector. Background technique [0002] Phosphate rock is an essential basic raw material for the production of phosphate fertilizers and phosphorus chemical products. my country's phosphate resource reserves are 16.786 billion tons, with an average grade of 16.95%. The high-grade ore that can be directly used can only be mined for more than ten years. Due to its poor dissociation and the content of silicate and carbonate minerals, its development and utilization is a worldwide problem. In phosphate rock flotation, the existing collectors have poor beneficiation performance, low low-temperature flotation effect, large amount of existence, and low selectivity, resulting in high beneficiation costs. Contents of the invention [0003] The problem to be solved by this invention is the preparation method of a kind of vegetable fatty acid diethanola...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/01B03D101/02
Inventor 罗惠华李成秀黄俊陈炳炎汤家焰陈慧阮耀阳
Owner WUHAN INSTITUTE OF TECHNOLOGY
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