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A metal ion complex collector and its preparation method and application

A technology of metal ions and collectors, applied in the field of comprehensive utilization of tungsten ore resources, can solve the problems of difficult separation in roughing and beneficiation operations, difficult separation of calcium-containing minerals, large amount of water glass, etc. The effect of short process flow

Active Publication Date: 2018-02-16
CENT SOUTH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of difficult separation of calcium-containing minerals, large amount of water glass used, difficult separation of roughing and fine selection, and low recovery rate in the traditional fatty acid tungsten separation process, the present invention provides an extremely strong tungsten-containing mineral, rare earth and cassiterite, etc. Metal Ion Complex Collector with Selective Capability

Method used

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  • A metal ion complex collector and its preparation method and application
  • A metal ion complex collector and its preparation method and application
  • A metal ion complex collector and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Mix 1mol / L benzoic acid with 3mol / L anhydrous methanol, slowly add 30mL of concentrated acid, add a few grains of zeolite, heat to 75°C and reflux for 2h. Distill off excess methanol with a distillation device, and the residue is washed three times to obtain the corresponding ester; add 2.2 mol of hydroxylamine hydrochloride into a single-necked flask, and add 50 mL of ethanol, stir and cool in a water bath, add 88 g of sodium hydroxide therein, Stir in a water bath for 2 hours, filter out the unacceptable free hydroxylamine to obtain free hydroxylamine hydrochloride; add free hydroxylamine hydrochloride and 25mL methanol to a three-necked flask equipped with an electric stirrer and a dropping funnel, and stir dropwise at 48°C Add 1.7 mol of the obtained ester, react for 45 minutes after the dropwise addition, add 0.5 mol of lead nitrate to the solution obtained in the third step under stirring conditions, and keep the temperature at 40°C for 1-2 hours to obtain the meta...

Embodiment 2

[0060] Mix 1mol / L salicylic acid with 3mol / L anhydrous methanol, slowly add 30mL of concentrated acid, add a few grains of zeolite, heat to 70°C and reflux for 1h. Distill off excess methanol with a distillation device, and the residual liquid is washed 5 times to obtain the corresponding ester; add 2.2 mol of hydroxylamine hydrochloride into a single-necked flask, and add 50 mL of ethanol, stir and cool in a water bath, add 88 g of sodium hydroxide to it, Stir in a water bath for 1.5h, filter out the incompatible free hydroxylamine to obtain free hydroxylamine hydrochloride; add free hydroxylamine hydrochloride and 25mL methanol to a three-neck flask equipped with an electric stirrer and a dropping funnel, and stir at 55°C Add 1.7 mol of the obtained ester dropwise, react for 45 minutes after the dropwise addition, add 0.25 mol of aluminum sulfate to the solution obtained in the third step under stirring conditions, and keep it at 40°C for 2 hours to obtain the metal ion compl...

Embodiment 3

[0065] Mix 1mol / L naphthenic acid with 3mol / L anhydrous methanol, slowly add 30mL of concentrated acid, add a few grains of zeolite, heat to 76°C and reflux for 1.5h. Distill off excess methanol with a distillation device, and the residue is washed three times to obtain the corresponding ester; add 2.2 mol of hydroxylamine hydrochloride into a single-necked flask, and add 50 mL of ethanol, stir and cool in a water bath, add 88 g of sodium hydroxide therein, Stir in a water bath for 1.5h, filter out the incompatible free hydroxylamine to obtain free hydroxylamine hydrochloride; add free hydroxylamine hydrochloride and 25mL methanol to a three-necked flask equipped with an electric stirrer and a dropping funnel, and stir at 50°C Add 1.7 mol of the obtained ester dropwise, react for 45 minutes after the dropwise addition is completed, add 0.125 mol of nickel sulfate to the solution obtained in the third step under stirring conditions, and react at 40°C for 2 hours to obtain the me...

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Abstract

The invention discloses a metal ion complex collecting agent and a preparation method and application of the metal ion complex collecting agent. The metal ion complex collecting agent is formed by a ligand and metal ions in a coordination manner. The preparation method of the metal ion complex collecting agent comprises the step that soluble metal salt is added into a solution with the ligand for a reaction, and the metal ion complex collecting agent is obtained. The method is simple and low in cost. The prepared metal ion complex collecting agent has extremely high selective collecting capacity on tungsten-containing minerals, rare earth, cassiterite and the like, the tungsten-containing minerals, the cassiterite, the rear earth and the like can be selectively separated from calcic gangue minerals in the absence of a calcic mineral inhibitor, and the problem that calcic minerals are hard to separate is fundamentally solved. The metal ion complex collecting agent is good in selective collecting effect, stable in performance, low in use level, low in cost and capable of being widely applied to the floatation and separation process of the tungsten-containing minerals, the cassiterite and the rear earth, and the quality of concentrates is effectively improved.

Description

technical field [0001] The invention relates to a metal ion complex collector and its preparation method and application, in particular to a separation technology between tungsten-containing minerals, rare earths, tin ore and calcium-containing gangue, and belongs to the field of comprehensive utilization of tungsten ore resources. Background technique [0002] Tungsten is a precious rare metal, which has the highest melting point, the lowest thermal expansion coefficient, and the lowest vapor pressure among metal elements, and is one of the highest density metal elements. Tungsten has excellent high-temperature mechanical properties, very high compression modulus and With a series of unique properties such as elastic modulus, excellent high temperature creep resistance, high electrical and thermal conductivity, and very high electron emission coefficient, it is widely used in various fields such as civil, industrial, and military industries. For a long time, the mineral res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/01B03D101/02B03D103/04
CPCB03D1/01B03D2201/02B03D2203/04
Inventor 胡岳华孙伟韩海生李晓东伏彩萍刘润清黄伟生谢加文陈玉林唐鸿鹄刘杰孟祥松郭衍哲
Owner CENT SOUTH UNIV
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