Composite floating chemical and method for preparing same

A flotation agent, chlorinated fatty acid technology, applied in flotation, carboxylic acid halide preparation, solid separation, etc., can solve the problem of uncompetitive price of phosphate concentrate, low flotation index at room temperature, and increased energy consumption by heating and other problems, to achieve the effect of improving the comprehensive efficiency of beneficiation, good emulsifying effect and reducing beneficiation cost.

Inactive Publication Date: 2009-10-07
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, fatty acid collectors are mostly used in the flotation of medium and low-grade phosphate rocks. The disadvantages of common fatty acid flotation collectors are poor selectivity and low flotation index at room temperature. A large amount of energy consumption makes the price of phosphorus concentrate uncompetitive. Aiming at these shortcomings of fatty acids, flotation researchers at home and abroad have done a lot of work. Among them, derivatization to improve the selectivity and water solubility of flotation collectors is phosphorus An important advancement in ore flotation, the main trend is to develop or select multifunctional compounds. When the molecule contains more than two polar groups, the flotation effect is often better than the classic anion and cation collectors, while weak dissociation Or non-ionization and mixed synergy have received extensive attention in flotation reagents

Method used

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  • Composite floating chemical and method for preparing same
  • Composite floating chemical and method for preparing same
  • Composite floating chemical and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 0.3 mol of rapeseed oil to a 1L beaker, mechanically stir and heat, add 1.3 mol (15 mol / L) of NaOH solution at 80°C, keep warm at 90°C until a small amount of product is put in cold water without oily flowers to obtain saponified product, add 100ml of 80°C water and 0.2mol of NaOH solution continued to keep warm for half an hour, then added NaCl and allowed to stand for salting out for 5 hours, then took the saponified product in the upper layer and washed it with water (the amount of water should not be too much to produce jelly) to obtain the saponified product. The obtained saponified product was in Add 1.5 mol (10 mol / L) of concentrated sulfuric acid at room temperature, keep warm at 90°C and mechanically stir for 3 hours, let stand to separate the liquid, take the upper oily matter, wash it twice with water at 80°C, and dry to obtain anhydrous fatty acid;

[0034] The anhydrous fatty acid produced in the previous step was placed in a 1L three-necked flask, and t...

Embodiment 2

[0038] Add 0.6mol of rapeseed oil to a 2L beaker, mechanically stir and heat, add 2.0mol (18mol / L) of NaOH solution at 90°C, keep warm at 90°C until a small amount of product is put in cold water without oily flowers to obtain saponified product, add 200ml of 80°C water and 0.7mol of NaOH solution continued to keep warm for half an hour, then added NaCl and allowed to stand for salting out for 5 hours, then took the saponified product in the upper layer and washed it with water (the amount of water should not be too much to produce jelly) to obtain the saponified product. Add 2.7 mol (8 mol / L) of concentrated sulfuric acid at room temperature, heat and mechanically stir for 3 hours 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;

[0039] Put the anhydrous fatty acid produced in the previous step in a 2L three-necked flask, add the catalyst thionyl chloride, raise ...

Embodiment 3

[0043] Add 0.6 mol of rapeseed oil to a 2L beaker, mechanically stir and heat, add 2.0 mol of KOH solution (12mol / L) at 90°C, keep warm at 90°C until a small amount of product is put in cold water without oily flowers to obtain saponified product, add 200ml of 80°C water and 0.7mol of KOH solution continued to keep warm for half an hour, then added NaCl and allowed to stand for salting out for 5 hours, then took the saponified product in the upper layer and washed it with water (the amount of water should not be so large as to produce jelly) to obtain the saponified product. Add 2.7 mol (12 mol / L) of concentrated sulfuric acid at room temperature, heat and mechanically stir for 3 hours at 90-100°C for reaction, 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;

[0044] Put the anhydrous fatty acid produced in the previous step in a 2L three-necked flask, add the catalyst thionyl chloride, r...

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Abstract

The present invention relates to a composite floating chemicals and a method for preparing same which includes steps as follows: preparing chloro fatty acid pentaerythrite monoesters and chloro sodiumsoap / potassium salt, combining chloro fatty acid pentaerythrite monoesters with chloro sodium soap / potassium salt for obtaining the composite floating chemicals. Compared with a normal technique, which uses modification sodium soap / potassium as a collecting agent, a non-ionic chloro fatty acid pentaerythrite monoesters can increase selectivity, simultaneity, overcome disadvantage of low dissolvability and poor capture ability by using chloro fatty acid pentaerythrite monoesters as the collecting agent, both materials mix and have complementary advantage for generating cooperation effect whichmakes the modification emulsive material having better emulsive effect, and mineral concentration synthetize efficiency increasing obviously; the method has easy obtained material, low cost, simple syntheticroute, low mineral concentration cost, and can overcome sufficient in prior technology.

Description

technical field [0001] The invention relates to a composite flotation agent, in particular to a composite flotation agent of chlorinated fatty acid pentaerythritol monoester and chlorinated fatty acid sodium / potassium and a preparation method thereof. Background technique [0002] my country's phosphate rock resource reserves are second only to Morocco and the United States, accounting for 30% of the world, but it has the characteristics of less rich ore, more lean ore, less easy-to-separate ore, and more difficult-to-separate ore. It is of great significance to strengthen the comprehensive utilization technology research of medium and low-grade phosphate rock . At present, fatty acid collectors are mostly used in the flotation of medium and low-grade phosphate rocks. The disadvantages of common fatty acid flotation collectors are poor selectivity and low flotation index at room temperature. A large amount of energy consumption makes the price of phosphorus concentrate uncom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/008C07C67/14C07C69/62
Inventor 潘志权黄齐茂向平
Owner WUHAN INSTITUTE OF TECHNOLOGY
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