Hydroxamic acid-organophosphate multi-ligand metal complex collector and its preparation method and application

A technology of metal complexes and organophosphoric acid, which is applied in solid separation and flotation, can solve the problems of high cost, unsatisfactory separation effect of fine-grained cassiterite, and poor environmental protection, so as to reduce the cost of beneficiation and facilitate large-scale Production application, beneficial to environmental protection

Active Publication Date: 2021-07-27
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cassiterite collectors have problems such as high cost, poor environmental protection, and unsatisfactory separation effect on fine-grained cassiterite. Therefore, the development of new and efficient cassiterite flotation collectors has low dosage, low cost and environmental protection. Safety and other characteristics are of great significance to the processing and utilization of tin resources

Method used

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  • Hydroxamic acid-organophosphate multi-ligand metal complex collector and its preparation method and application
  • Hydroxamic acid-organophosphate multi-ligand metal complex collector and its preparation method and application
  • Hydroxamic acid-organophosphate multi-ligand metal complex collector and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Weigh 0.002mol of benzohydroxamic acid and put it into a 500mL flask, add 300mL of methanol as a solvent, add 0.0004mol of ethyl acetate after complete dissolution, then add sodium hydroxide to adjust the pH value to 9.0, stir and react at room temperature for 30min, Obtain hydroxamate; hydroxamate and 2-aminoethylphosphonic acid are added in the flask according to the molar mass ratio of 1:1, add glycerin to make its mass concentration be 35%, then be placed in the constant temperature water bath, use magnetic Stirring and heating to 100°C and reacting for 25 minutes, the obtained liquid was recrystallized three times after rotary evaporation to obtain a solid; the obtained solid was added to the flask, and the mixed liquid of water and methanol was prepared according to the volume ratio of water and methanol at 7:1 and added In the flask, the mass percent concentration of the solid in the mixed solution of water and methanol is 35%, to obtain the hydroxamic acid-organo...

Embodiment 2

[0055] Weigh 0.001mol propyl 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, stir and react at room temperature for 30min, Obtain hydroxamate; add hydroxamate and 1-decyl phosphoric acid into the flask according to the molar mass ratio of 1.5:1, add glycerin to make its mass concentration 40%, then place it in a constant temperature water bath and stir it with a magnet And heated to 95 °C and reacted for 30 minutes, the obtained liquid was recrystallized three times after rotary evaporation to obtain a solid; the obtained solid was added to the 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 , so that the mass percentage concentration of the solid in the mixed solution of water and methanol is 40%, to obtain the hydroxamic acid-organophosphate complex m...

Embodiment 3

[0060] Weigh 0.002mol of salicylic hydroxamic acid and put it into a 500mL flask, add 300mL of methanol as a solvent, add 0.0004mol of ethyl acetate after complete dissolution, then add sodium hydroxide to adjust the pH value to 8.5, stir and react at room temperature for 30min, and obtain hydroxy Oxamate; hydroxamate and 2-aminoethylphosphonic acid are added to the flask according to the molar mass ratio of 1:1, glycerin is added to make the mass concentration 40%, and then placed in a constant temperature water bath and stirred with a magnet And heated to 80 °C and reacted for 15 minutes, the obtained liquid was recrystallized three times after rotary evaporation to obtain a solid; the obtained solid was added to the flask, and the mixed liquid of water and methanol was prepared according to the volume ratio of water and methanol at 6:1 and added to the flask , so that the mass percentage concentration of the solid in the mixed solution of water and methanol is 45%, to obtain...

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Abstract

The invention discloses a hydroxamic acid-organophosphoric acid multi-ligand metal complex collector as well as its preparation method and application. Hydroxamic acid-organophosphoric acid multi-ligand metal complex collector is obtained by coordination reaction between hydroxamic acid-sulfonic acid multi-ligand complex micelles prepared by hydroxamate and organic phosphoric acid and metal ions. The hydroxamic acid-organophosphate multi-ligand metal complex collector has a strong selective collection ability for cassiterite, which can realize the selective flotation separation of cassiterite and gangue minerals, and fundamentally solve the problem of cassiterite Technical problems related to the difficulty of flotation separation of gangue minerals.

Description

technical field [0001] The invention relates to a flotation collector, in particular to a hydroxamic acid-organophosphate multi-ligand metal complex collector for cassiterite flotation separation, and also relates to its preparation method, and the use of hydroxamic acid - A method for realizing high-efficiency flotation separation of cassiterite and gangue minerals by organophosphate multi-ligand metal complexes, belonging to the technical field of mineral flotation. Background technique [0002] Cassiterite is the main source of tin resources. China is a country with a large amount of tin resources, and its reserves and production rank among the top in the world. Tin ore is brittle and easy to be crushed. During the beneficiation process, a large number of refractory fine-grained cassiterite tailings will be produced. The tin fine mud tailings have fine particle size, low grade, and complex mineral composition. It has always been a difficult problem for cassiterite separa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/014B03D1/02B03D101/02B03D103/04
CPCB03D1/014B03D1/02B03D2201/02B03D2203/04
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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