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Chloro-sodium soap/sylvite flotation agent and method for producing the same

A technology of chlorinated sodium fatty acid and sodium fatty acid, which is applied in the preparation of carboxylate, flotation, solid separation, etc., can solve the problem that the price of phosphate concentrate is not competitive, the cost of waste liquid treatment is difficult, and the amount of flotation agent increases, etc. problems, to achieve the effect of improving surface activity, increasing solubility, and reducing surface tension

Inactive Publication Date: 2009-05-13
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country's phosphate rock resources account for 30% of the world, most of which are low-grade refractory ores. At present, fatty acid flotation agents are mostly used in the flotation of phosphate ores, but the disadvantages of common fatty acid flotation flotation agents are poor selectivity and poor The selection temperature is sensitive, and the flotation index is low when the temperature is low, especially when the low-grade phosphate rock is flotation, the temperature rise will increase the energy consumption, and the increase in the amount of flotation agent will increase the cost and make the waste liquid treatment difficult, which will lead to the price of phosphate concentrate not competitive

Method used

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  • Chloro-sodium soap/sylvite flotation agent and method for producing the same
  • Chloro-sodium soap/sylvite flotation agent and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 0.3 mol of rapeseed oil to a 1L beaker, mechanically stir and heat, add 1.2 mol (15 mol / L) of NaOH solution at 80°C, and keep warm at 90-100°C until a small amount of product is taken in cold water without oily flowers to obtain a saponified product , add 100ml of 80°C water and 0.1mol of NaOH solution and continue to keep warm for half an hour. Add 1.5 mol (12 mol / L) of concentrated sulfuric acid to the product at room temperature, heat and mechanically stir at 90-100°C for 3 hours, let stand to separate the liquid, take the upper oily matter, wash it twice at 80°C, and dry to obtain anhydrous fatty acid;

[0024] The obtained anhydrous fatty acid is placed in a 1L three-necked flask, the catalyst thionyl chloride is added, heated to 90-100°C, and 3 mol of chlorine gas (0.1L / min) is passed through. After the reaction is completed, the chlorinated fatty acid is obtained, and 2 mol of NaOH solution is added thereto. Keep warm and reflux for 2 hours, add NaCl and let ...

Embodiment 2

[0026] Add 0.6 mol of rapeseed oil to a 2L beaker, mechanically stir and heat, add 2 mol (12 mol / L) of NaOH solution at 90°C, and keep warm at 90-100°C until a small amount of product is taken in cold water without oily flowers to obtain saponified product. Add 200ml of 80°C water and 0.6mol of NaOH solution and continue to keep warm for half an hour, add NaCl and let it stand for salting out for 5 hours, take the upper saponified product and wash it with water (the amount of water should not be too much to produce jelly) to obtain the saponified product, the obtained saponified product Add 2.7 mol (8 mol / L) of concentrated sulfuric acid at room temperature, heat and mechanically stir at 90-100°C for 3 hours, let stand to separate the liquid, take the upper oily matter, wash it twice with water at 70-90°C, and dry to obtain anhydrous fatty acid;

[0027] The obtained anhydrous fatty acid is placed in a 2L three-necked flask, a catalyst is added, and the temperature is heated to...

Embodiment 3

[0029] Add 0.6 mol of rapeseed oil to a 2L beaker, mechanically stir and heat, add 2 mol of KOH solution (18mol / L) at 90°C, and keep warm at 90-100°C until a small amount of product is taken in cold water without oily flowers to obtain a saponified product. Add 200ml of 80°C water and 0.3mol of KOH solution and continue to keep warm for half an hour, add NaCl and let it stand for salting out for 5 hours, take the saponified product in the upper layer and wash it with water (the amount of water should not be too much to produce jelly) to obtain the saponified product, the obtained saponified product Add 3.2 mol (10 mol / L) of concentrated sulfuric acid at room temperature, heat and mechanically stir at 90-100°C for 3 hours, let stand to separate the liquid, take the upper oily matter, wash it twice at 70-90°C, and dry to obtain anhydrous fatty acid;

[0030] The obtained anhydrous fatty acid is placed in a 2L three-necked flask, a catalyst is added, and the temperature is heated ...

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Abstract

The invention relates to a chlor-sodium soap / sylvine floatation agent and a preparation method thereof. The floatation agent is mainly prepared from colza oil, a strong alkali solution, concentrated sulfuric acid and chlorine; the molar ratio of raw materials of the colza oil, to the strong alkali solution to the concentrated sulfuric acid to the chlorine is 1 to 10.2-12.9 to 4.2-5.4 to 9-12. Compared with the prior art, the method has the following advantages: for alpha substitution (-Cl or-OH), the alpha substitution of carboxylic acid strengthens the activity of anions, improves the chelating capacity of the floatation agent, increases the electric conductivity of a compound, reduces surface tension, increases the foam performance and improves surface activity; the adaptability to Ca<2+> ions and Mg<2+> ions is increased so that floatation can be carried out at lower temperature in hard water; if two polar groups are in ortho position, the section on one end of the polar group of the floatation agent is increased to strengthen the selectivity of a drug; after a hydrophilic polar group is introduced to the alpha position, the dependence of the floatation agent on the temperature is greatly reduced.

Description

technical field [0001] The invention relates to a flotation agent, in particular to a chlorinated fatty acid sodium / potassium salt flotation agent and a preparation method thereof. Background technique [0002] my country's phosphate rock resources account for 30% of the world, most of which are low-grade refractory ores. At present, fatty acid flotation agents are mostly used in the flotation of phosphate ores, but the disadvantages of common fatty acid flotation flotation agents are poor selectivity and poor The selection temperature is sensitive, and the flotation index is low when the temperature is low, especially when the low-grade phosphate rock is flotation, the temperature rise will increase the energy consumption, and the increase in the amount of flotation agent will increase the cost and make the waste liquid treatment difficult, which will lead to the price of phosphate concentrate Not competitive. In recent years, the main trends in the development or selection ...

Claims

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Application Information

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IPC IPC(8): C07C57/52C07C51/41B03D1/008
Inventor 黄齐茂潘志权邓成斌周红胡学雷吴元欣
Owner WUHAN INSTITUTE OF TECHNOLOGY
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