Method for preparation of vegetable fatty acid and citric alkyl ester saponin compounded collecting agent

A technology of vegetable fatty acid and citric acid, applied in solid separation, flotation and other directions, can solve the problems of poor low-temperature flotation effect, high beneficiation cost, large dosage of chemicals, etc., and achieve high flotation efficiency, low price, and reduced beneficiation cost. Effect

Inactive Publication Date: 2015-09-02
WUHAN INSTITUTE OF TECHNOLOGY +1
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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 disadvantages such as low selectivity, poor low-temperature flotation effect, heating flotation and large dosage of reagents, etc., resulting in high beneficiation costs

Method used

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  • Method for preparation of vegetable fatty acid and citric alkyl ester saponin compounded collecting agent

Examples

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Effect test

Embodiment 1

[0020] 1) Weigh 50g of n-decyl alcohol and 50g of anhydrous citric acid (mass ratio 1:1) in a flask, then put the flask into a constant temperature oil bath with magnetic stirring, start stirring and heat up to 110°C, carry out Esterification reaction, react for 60min, obtain decyl citrate, cool down to 70°C for later use;

[0021] 2) Weigh 100g of fatty acid with an iodine value of 135 in a beaker, heat it, and control the temperature at 70°C, and add it to the above-mentioned flask while it is hot. The mass ratio of fatty acid to decyl citrate is 1:1, and the temperature is controlled at 70°C. Heated and stirred for 20 minutes to obtain fatty acid complex decyl citrate;

[0022] 3) Weigh 20g of sodium hydroxide and dissolve it in 30g of water, control the temperature at 80°C, put it into a pear-shaped bottle, transfer the reacted fatty acid compound decyl citrate to a 500ml beaker, start stirring and slowly add hydroxide Sodium solution, make it saponify with fatty acid com...

Embodiment 2

[0024] 1) Weigh 50g of dodecyl alcohol and 25g of anhydrous citric acid (mass ratio 2:1) in a flask, then put the flask into a constant temperature oil bath with magnetic stirring, start stirring and raise the temperature to 120°C, carry out Esterification reaction, reacted for 40 minutes to obtain dodecyl citrate, cooled to 80°C for later use;

[0025] 2) Weigh 150g of fatty acid with an iodine value of 135 in a beaker, heat it, and control the temperature at 80°C, and add it to the above flask while it is hot. The mass ratio of fatty acid to lauryl citrate is 2:1, and the temperature is controlled at 80°C , heated and stirred for 20 minutes to obtain fatty acid compound lauryl citrate;

[0026] 3) Dissolve 30g of sodium hydroxide in 45g of water, control the temperature at 80°C, put it into a pear-shaped bottle, transfer the reacted fatty acid compound lauryl citrate to a 500ml beaker, start stirring and slowly add hydrogen Sodium oxide solution 75g, make it saponify with u...

Embodiment 3

[0028] 1) Weigh 50g of mixed fusel alcohol and 12.5g of anhydrous citric acid (mass ratio 4:1) into a flask, then put the flask into a constant temperature oil bath with magnetic stirring, start stirring and heat up to 150°C, Esterification reaction was carried out for 40 minutes to obtain fusel oil citrate, which was cooled to 90°C for later use;

[0029] 2) Weigh 250g of fatty acid with an iodine value of 135 in a beaker, heat it, control the temperature at 90°C, and add it to the above flask while it is hot. The mass ratio of fatty acid to fusel oil citric acid is 4:1, and the temperature is controlled at 90°C. ℃, heated and stirred for 20 minutes to obtain fatty acid compound fusel oil citric acid ester;

[0030] 3) Weigh 52g of sodium hydroxide and dissolve it in 52g of water, control the temperature at 90°C, put it into a pear-shaped bottle, transfer the reacted fatty acid compound citric acid fusel oil ester to a 500ml beaker, start stirring and slowly add 50% (m / m) so...

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Abstract

The invention relates to a compound collecting agent for flotation of phosphorus ores, in particular to a method for preparation of a vegetable fatty acid and citric alkyl ester saponin compounded collecting agent. The method includes the steps: 1) subjecting alkyl alcohol and citric acid to esterification reaction to obtain a reaction product which is a citric alkyl ester surfactant; 2) adding vegetable fatty acid with iodine value being 135 into the citric alkyl ester surfactant obtained at the step 1), heating and well mixing; 3) adding the mixture obtained at the step 2) to sodium hydroxide solution to realize saponification, and well mixing to obtain the vegetable fatty acid and citric alkyl ester saponin compounded collecting agent. The method has the advantages that by utilization of the vegetable fatty acid and citric alkyl ester saponin compounded collecting agent, phosphorus selectivity is evidently improved, flotation temperature is lowered, and flotation efficiency is improved; in addition, easiness in purchase of raw materials, low cost, simple production lines, safety in production process and avoidance of irritating odors are realized, ore dressing cost is reduced, and defects in the prior art are overcome.

Description

technical field [0001] The invention relates to a compound collector for phosphate rock flotation, in particular to a preparation method for the compound collector of plant fatty acid citric acid hydrocarbyl ester soap. Background technique [0002] Phosphate rock is an essential basic raw material for the production of phosphate fertilizers and fine phosphorus chemical products, and is an important strategic mineral resource in my country. my country has abundant reserves of phosphate rock resources, but most of them are medium and low-grade phosphate rocks with low phosphorus content. The high-grade phosphate rocks that can be directly used can only be mined for more than ten years. Due to the complex mosaic relationship of various minerals, fine mosaic particle size, poor dissociation, and high content of silicate and carbonate minerals, the development and utilization of middle and low-grade collophosite is a worldwide problem. In phosphate rock flotation, the existing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/008B03D101/02B03D103/06
Inventor 罗惠华李成秀陈慧李亮饶欢欢杨婕刘连坤朱道鹏陈炳炎程仁举
Owner WUHAN INSTITUTE OF TECHNOLOGY
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