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Hydroximic acid-alkyl sulfuric acid multi-ligand metal complex collecting agent as well as preparation method and application thereof

A metal complex and alkyl sulfuric acid technology, which is applied in the field of hydroxamic acid-alkyl sulfuric acid multi-ligand metal complex collectors and flotation collectors, can solve the separation of tungsten-containing minerals and calcium-containing gangue minerals Difficulties in roughing and beneficiation, difficult separation in roughing and beneficiation, and large amount of sodium silicate inhibitor, so as to improve the grade of concentrate and the recovery rate of flotation operations, which is conducive to large-scale production and application, and has the effect of strong selective collection capacity.

Active Publication Date: 2020-04-28
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the flotation of tungsten-containing minerals in the prior art, traditional fatty acid collectors are used, and there are difficulties in separating tungsten-containing minerals from calcium-containing gangue minerals, a large amount of water glass inhibitor, rough separation and separation difficulties, and low recovery rates. Problem, the first purpose of the present invention is to provide a hydroxamic acid which has a very strong selective collection ability for tungsten-containing minerals, etc., and can realize the efficient separation of these tungsten-containing minerals from silicate and calcium-containing gangue minerals - Alkyl sulfate multi-ligand metal complex collector

Method used

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  • Hydroximic acid-alkyl sulfuric acid multi-ligand metal complex collecting agent as well as preparation method and application thereof
  • Hydroximic acid-alkyl sulfuric acid multi-ligand metal complex collecting agent as well as preparation method and application thereof
  • Hydroximic acid-alkyl sulfuric acid multi-ligand metal complex collecting agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Weigh 0.001mol of benzohydroxamic acid and put it into a 500mL flask, add 300mL of methanol as a solvent, add 0.0002mol of ethyl acetate after complete dissolution, then add sodium hydroxide to adjust the pH value to 9.0, and stir and react at room temperature for 30min. Obtain hydroxamate; hydroxamate and sodium lauryl sulfate are added in the flask according to the molar mass ratio of 1:1, add glycerol to make its mass concentration 35%, then be placed in a constant temperature water bath, use a magnet Stir and heat to 90°C and react for 20 minutes. The obtained liquid is recrystallized three times after rotary evaporation to obtain a solid; add the obtained solid to the flask, and prepare a mixed liquid of water and methanol according to the volume ratio of water and methanol at 6:1 and add it to the flask In the method, the mass percentage concentration of the solid in the mixed solution of water and methanol is 40%, and the hydroxamic acid-alkylsulfuric acid complex...

Embodiment 2

[0057] Weigh 0.002mol propyl hydroxamic acid into a 500mL flask, add 300mL methanol as solvent, add 0.0004mol ethyl acetate after complete dissolution, then add sodium hydroxide to adjust the pH value to 8.5, and stir the reaction at room temperature for 40min. Obtain hydroxamate; Hydroxamate and n-octadecyl sodium sulfate are added in the flask according to the molar mass ratio of 1:1, add glycerol to make its mass concentration 40%, then place it in a constant temperature water bath, use a magnet Stir and heat to 100°C and react for 15 minutes. The obtained liquid is recrystallized three times after rotary evaporation to obtain a solid; add the obtained solid to the flask, prepare a mixed liquid of water and methanol according to the volume ratio of water and methanol at 8:1 and add it to the flask In the method, the mass percentage concentration of the solid in the mixed solution of water and methanol is 35%, and the hydroxamic acid-alkylsulfuric acid complex micelles are ob...

Embodiment 3

[0062] Weigh 0.001mol salicylic hydroxamic acid into a 500mL flask, add 300mL methanol as a solvent, add 0.0002mol ethyl acetate after complete dissolution, then add sodium hydroxide to adjust the pH value to 9.0, and stir the reaction at room temperature for 25min to obtain hydroxy Hydroxamate; hydroxamate and sodium tetradecyl sulfate are added in the flask according to the molar mass ratio of 1:1, add glycerol to make its mass concentration 42%, then place it in a constant temperature water bath, stir and Heating to 85°C and reacting for 15 minutes, the obtained liquid was recrystallized three times after rotary evaporation to obtain a solid; the obtained solid was added to a flask, and a mixed liquid of water and methanol was prepared according to the volume ratio of water and methanol at 7:1 and added to the flask. The mass percentage concentration of the solid in the mixed solution of water and methanol is 35%, and the hydroxamic acid-alkylsulfuric acid complex micelles a...

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Abstract

The invention discloses a hydroxamic acid-alkyl sulfuric acid multi-ligand metal complex collecting agent as well as a preparation method and application thereof. The hydroxamic acid-alkyl sulfuric acid multi-ligand metal complex collecting agent is obtained by carrying out coordination reaction on hydroxamic acid-alkyl sulfuric acid multi-ligand composite micelles prepared from hydroxamic acid salt and alkyl sulfate and metal ions. The hydroxamic acid-alkyl sulfuric acid multi-ligand metal complex collecting agent has extremely high selective collecting capacity on tungsten-containing minerals; efficient flotation separation of the tungsten-containing minerals and calcium-containing gangue minerals can be achieved under the condition that no or only a small amount of calcium-containing mineral inhibitor is contained, and the technical problem that flotation separation of the tungsten-containing minerals and the calcium-containing gangue minerals is difficult is fundamentally solved.

Description

technical field [0001] The invention relates to a flotation collector, in particular to a hydroxamic acid-alkylsulfuric acid multi-ligand metal complex collector for flotation separation of tungsten-containing minerals, a preparation method thereof, and the use of hydroxyl The invention relates to a method for realizing high-efficiency flotation separation of tungsten-containing minerals and calcium-containing gangue minerals by an xamic acid-alkylsulfuric acid multi-ligand metal complex, which belongs to the technical field of mineral flotation. Background technique [0002] Tungsten-containing minerals are an important class of mineral resources. The common tungsten-containing minerals mainly include scheelite, wolframite and tungsten, and their recycling usually adopts flotation. However, tungsten-containing minerals often coexist with gangue minerals such as silicates and carbonates, resulting in low flotation efficiency during the flotation process. Taking scheelite as...

Claims

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Application Information

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IPC IPC(8): B03D1/012B03D1/02B03D101/02B03D103/04
CPCB03D1/012B03D1/02B03D2201/02B03D2203/04
Inventor 韩海生卫召孙伟胡岳华王若林孙文娟付君浩
Owner CENT SOUTH UNIV
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