Oxidized ore amphoteric collecting agent and preparation method and application thereof

A collector and oxide technology, applied in solid separation, flotation and other directions, can solve the problems of reduced collection capacity of oxidized minerals, sticky solubility foam, and poor sorting performance, and can overcome the high flotation temperature. , strong effect, simple preparation method

Active Publication Date: 2022-02-25
天津天宝翔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the flotation temperature is lowered, the solubility of the fatty acid collector becomes smaller and the foam becomes stickier, resulting in a smaller collection capacity for oxidized minerals, poor sorting performance, low concentrate grade and high tailings. qualified phenomenon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Preparation of sodium N-dodecyl-2-hydroxyethylamino acid: Add 0.12 mol of dichloroacetic acid and 0.1 mol of dodecylamine to the reaction kettle, mix them, add 200ml of 2mol / L sodium carbonate solution, and stir the reaction at 80°C After 6 hours, add 30ml of 4mol / L NaOH solution, and hydrolyze at 110°C for 4 hours to obtain a colorless and clear solution, which is N-dodecyl-2-hydroxyacetate sodium collector.

[0016] Product performance:

[0017] (1) Using one rough, one fine and three sweep flotation process to evaluate the reagents, compared with the iron ore collector used in the homogeneous industry, the flotation temperature is reduced by 10°C, the grade of iron concentrate is increased by 0.22%, and the grade of iron in tailings is reduced 0.89%, and the unit consumption of medicine increased by 9.86%;

[0018] (2) Using one rough and seven fine flotation process to evaluate reagents, compared with the fluorite collector used by Baosteel Baoshan Industry, the fl...

Embodiment 2

[0021] Preparation of sodium N-isododecyl-2-hydroxyethylamino acid: Add 0.12 mol of dichloroacetic acid and 0.1 mol of isododecylamine to the reaction kettle to mix, add 200ml of 2mol / L sodium carbonate solution, and heat at 80°C After stirring and reacting for 6 hours, add 30ml of 4mol / L NaOH solution and hydrolyze for 4 hours at 110°C to obtain a colorless and clear solution which is N-isododecyl-2-hydroxyethylamino acid sodium collector.

[0022] Product performance:

[0023] (1) Using one rough, one fine, three sweep flotation process to evaluate the reagents, compared with the iron ore collector used in the homogeneous industry, the flotation temperature is reduced by 10°C, the grade of iron concentrate is increased by 0.15%, and the grade of iron in tailings is reduced 1.01%, and the unit consumption of medicine increased by 8.13%;

[0024] (2) Using one rough and seven fine flotation process to evaluate reagents, compared with the fluorite collector used by Baosteel Ba...

Embodiment 3

[0027] Preparation of sodium N-benzyl-2-hydroxyethylamino acid: Add 0.12 mol of dichloroacetic acid and 0.1 mol of isododecylamine to the reaction kettle, mix them, add 200ml of 2mol / L sodium carbonate solution, and stir the reaction at 80°C for 6 After one hour, add 30ml of 4mol / L NaOH solution, hydrolyze at 110°C for 4 hours, and obtain a colorless and clear solution which is N-benzyl-2-hydroxyethylamino acid sodium collector.

[0028] Product performance:

[0029] (1) Using one rough, one fine and three sweep flotation process to evaluate the flotation agent, compared with the iron ore collector used in the homogeneous industry, the flotation temperature is reduced by 10°C, the grade of iron concentrate is increased by 0.28%, and the grade of iron in tailings is reduced 0.48%, and the unit consumption of medicine increased by 5.26%;

[0030] (2) Using one rough and seven fine flotation process to evaluate reagents, compared with the fluorite collector used by Baosteel Baos...

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PUM

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Abstract

The invention relates to an oxidized ore amphoteric collecting agent and a preparation method and application thereof. The structure of the collecting agent is an organic amino hydroxy acid compound. The preparation method comprises the steps that the molar ratio of amine to dichloroacetic acid is 1: (1.1-1.5), the reaction temperature is 70-100 DEG C, the amine and the dichloroacetic acid react in a 1-3 mol/L sodium carbonate solution for 1-8 h, a certain amount of alkali is added, the mixture reacts for 3-6 h at the temperature of 100-120 DEG C, and the oxidized ore amphoteric collecting agent is obtained. The organic amino hydroxy acid compound can replace a fatty acid collecting agent to serve as an iron ore, fluorite ore and phosphorite collecting agent.

Description

technical field [0001] The invention relates to an amphoteric collector for oxidized minerals, which belongs to the technical field of ore dressing agents. Background technique [0002] Iron ore, fluorite or phosphate ore and other oxidized mineral processing enterprises are eager to use collectors with low flotation temperature, strong collection capacity, and significant energy-saving and emission-reduction effects in order to achieve the goal of "double carbon", so as to promote enterprises to improve quality. Efficiency-oriented development. At present, the collectors used in the flotation of these oxidized minerals in industry are mainly fatty acid compounds, among which oleic acid has the largest application range and usage. When the flotation temperature is lowered, the solubility of the fatty acid collector becomes smaller and the foam becomes stickier, resulting in a smaller collection capacity for oxidized minerals, poor sorting performance, low concentrate grade ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/008B03D101/02B03D103/04B03D103/06
CPCB03D1/008B03D2201/02B03D2203/04B03D2203/06
Inventor 梅建庭曹翠董丽丽杨威
Owner 天津天宝翔科技有限公司
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