High-efficiency spodumene low-temperature flotation combined reagent as well as preparation and use methods thereof

A technology of combining reagents and spodumene, applied in flotation, solid separation, etc., can solve the problems of difficult to obtain flotation index, poor dispersion, large dosage of reagents, etc., achieve good selectivity and collection capacity, reduce flotation The effect of selection cost and preparation method is simple

Pending Publication Date: 2022-05-27
SHANGHAI MILESTONE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since spodumene in my country is mostly distributed in high-altitude and cold areas, conventional fatty acid collectors have poor dispersion at low temperatures, and it is difficult to obtain better flotation indicators when used alone; combined collectors can effectively improve spodumene flotation indicators, but most of the current spodumene collectors need to be under high alkali conditions to obtain better indicators; in addition, the current collectors still have problems such as large dosage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The high-efficiency spodumene low-temperature flotation combination agent of the present embodiment 1 is composed of dodecylamine and C 12 H 23 BrO 2 According to the molar ratio of 1:19 composition.

[0022] the C 12 H 23 BrO 2 The preparation method comprises the following steps:

[0023] will C 11 H 23 COOH melts, add mass C 11 H 23 COOH mass 5% PCl 3 , and added Br after the reaction at 75 °C for 1 h 2 , C 11 H 23 COOH and Br 2 The molar ratio is 1:1.2, and the reaction is carried out at 90 ° C for 7 h to obtain C 12 H 23 BrO 2 .

[0024] The use method of the high-efficiency spodumene low-temperature flotation combination agent comprises the following steps:

[0025] S1, the combined medicament is added with water and stirred, and is formulated into a combined medicament aqueous solution with a concentration of 0.025 mmol / L for use;

[0026] S2. During the flotation process of spodumene pure mineral, the concentration of the pulp is 6wt%, add the...

Embodiment 2

[0028] The high-efficiency spodumene low-temperature flotation combination agent of this example 2 is composed of dodecylamine and C 12 H 23 BrO 2 According to the molar ratio of 1:19 composition.

[0029] the C 12 H 23 BrO 2 The preparation method comprises the following steps:

[0030] will C 11 H 23 COOH melts, add mass C 11 H 23 COOH mass 4% PCl 3 , Br was added after the reaction at 70°C for 1.5h 2 , C 11 H 23 COOH and Br 2 The molar ratio is 1:1.5, and the reaction is carried out at 85°C for 8h to obtain C 12 H 23 BrO 2 .

[0031] The use method of the high-efficiency spodumene low-temperature flotation combination agent comprises the following steps:

[0032] S1, the combined medicament is added with water and stirred, and it is prepared into a combined medicament aqueous solution with a concentration of 0.03 mmol / L for use;

[0033] S2. During the flotation process of spodumene and quartz artificial mixed ore, the concentration of the pulp is 7wt%, a...

Embodiment 3

[0035] The high-efficiency spodumene low-temperature flotation combination agent of this example 3 is composed of dodecylamine and C 12 H 23 BrO 2 According to the molar ratio of 1:19 composition.

[0036] the C 12 H 23 BrO 2 The preparation method comprises the following steps:

[0037] will C 11 H 23 COOH melts, add mass C 11 H 23 COOH mass 5% PCl 3 , Br was added after reacting at 70 °C for 1 h 2 , C 11 H 23 COOH and Br 2 The molar ratio is 1:1.1, and the reaction is carried out at 90 ° C for 7 hours to obtain C 12 H 23 BrO 2 .

[0038] The use method of the high-efficiency spodumene low-temperature flotation combination agent is:

[0039] S1, the combined medicament is added with water and stirred, and the mixed medicament aqueous solution with a concentration of 0.02 mmol / L is prepared for use;

[0040] S2. In the flotation process of three artificial mixed ore of spodumene, albite and quartz, the concentration of the pulp is 6wt%, add the combined reag...

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Abstract

The invention discloses an efficient spodumene low-temperature flotation combined reagent and a preparation and use method thereof, and relates to the technical field of efficient spodumene low-temperature flotation, in particular to the efficient spodumene low-temperature flotation combined reagent and the preparation and use method thereof, the efficient spodumene low-temperature flotation combined reagent is composed of lauryl amine and RBrO2 according to the molar ratio of 1: (15-20), R in RBrO2 is CnH2n-1, and n is 10-18. The flotation combined reagent is environmentally friendly, the preparation method is simple, and chemical components and properties are stable; the optimal flotation pH range of the flotation combined reagent is 6-7, namely the natural pH of the ore pulp, and the problem that the pH of the spodumene flotation ore pulp is too alkaline at present can be solved; the flotation combined reagent is good in selectivity, resistant to low temperature, small in dosage and capable of saving energy and reducing the flotation cost.

Description

technical field [0001] The invention relates to the technical field of high-efficiency spodumene low-temperature flotation, in particular to a high-efficiency spodumene low-temperature flotation combined agent and a preparation and use method thereof. Background technique [0002] Lithium is widely used in batteries, medicine, aerospace, ceramics and other fields. With the development of electronic products and new energy industries, the demand for lithium is increasing year by year. my country has abundant reserves of spodumene resources, but its development and utilization rate is low. Flotation is the most common method for separating spodumene and its gangue minerals. The commonly used spodumene collectors in industry are fatty acid collectors and combined collectors. [0003] After searching, in a spodumene flotation collector with patent application number CN111672636A and its preparation method and application, it is proposed to use deep-processed oleic acid, sodium...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/004B03D101/02
CPCB03D1/004B03D2201/02Y02E60/10
Inventor 韩跃新李艳军高占奎
Owner SHANGHAI MILESTONE TECH CO LTD
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