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A low-temperature flotation combination agent for efficiently collecting scheelite and its application method

A technology of combining reagents and scheelite, applied in flotation, solid separation and other directions, can solve the problems of gangue mineral floating, heating, large amount of activator, etc., to reduce the cost of flotation, the amount of small, chemical composition and A stable effect

Active Publication Date: 2018-01-02
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are still many deficiencies in the current tungsten ore flotation reagent system. For example, if the ratio of inhibitor to collector is not well controlled, a large amount of gangue minerals will float up, and the amount of activator is large, and scheelite flotation needs to be heated (95 ℃) etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The low-temperature flotation combination reagent for efficiently collecting scheelite in this embodiment is composed of C 12 h 25 N 2 o 2 Br 2 1. Emulsifier TX-21, that is, nonylphenol polyoxyethylene ether and NaOH are composed according to the mass ratio of 1: 0.05:0.18.

[0025] The C 12 h 25 N 2 o 2 Br 2 The preparation method is:

[0026] Will C 12 h 25 COOH and Br 2 Mix according to molar ratio 1:2, react 8h at 65 ℃, product is directly mixed with fatty polyamine H at room temperature 2 N-(CH 2 ) 2- NH 2 Mix and stir until uniform at a molar ratio of 1:1 to obtain C 12 h 25 N 2 o 2 Br 2 .

[0027] The method of using the low-temperature flotation combination agent for efficiently collecting scheelite of the present invention is:

[0028] (1) Stir the combination agent with water, and heat it to 60°C at the same time, and prepare an aqueous solution containing a mass fraction of 6wt% of the combination agent for use;

[0029] (2) In the pure...

Embodiment 2

[0031] The low-temperature flotation combination reagent for efficiently collecting scheelite in this embodiment is composed of C 15 h 31 N 2 o 2 Br 2 1. Emulsifier CO-436, that is, nonylphenol polyoxyethylene ether ammonium sulfate and NaOH are composed according to the mass ratio of 1: 0.10: 0.20.

[0032] The C 15 h 31 N 2 o 2 Br 2 The preparation method is:

[0033] Will C 15 h 31 COOH and Br 2 Mix according to the molar ratio of 1:2, react at 70°C for 7h, and the product is directly mixed with aliphatic polyamine H at room temperature 2 N-(CH 2 ) 2- NH 2 Mix and stir until uniform at a molar ratio of 1:1.5 to obtain C 15 h 31 N 2 o 2 Br 2 .

[0034] The method of using the low-temperature flotation combination agent for efficiently collecting scheelite of the present invention is:

[0035] (1) Stir the combination agent with water, and heat it to 70°C at the same time, and prepare an aqueous solution containing a mass fraction of 6wt% of the combinat...

Embodiment 3

[0038] The low-temperature flotation combination reagent for efficiently collecting scheelite in this embodiment is composed of C 18 h 37 N 2 o 2 Br 2 , Emulsifier O-5, that is, fatty alcohol polyoxyethylene ether and NaOH are composed according to the mass ratio of 1:0.08:0.25.

[0039] The C 18 h 37 N 2 o 2 Br 2 The preparation method is:

[0040] Will C 18 h 37 COOH and Br 2 Mix according to molar ratio 1:2, react 4h at 85 ℃, product is directly mixed with fatty polyamine H at room temperature 2 N-(CH 2 ) 3- NH 2 Mix and stir until uniform at a molar ratio of 1:2 to obtain C 18 h 37 N 2 o 2 Br 2 .

[0041] The method of using the low-temperature flotation combination agent for efficiently collecting scheelite of the present invention is:

[0042](1) Stir the combination agent with water, heat it to 80°C at the same time, and make it into an aqueous solution containing a mass fraction of 6wt% of the combination agent for use;

[0043] (2) During the fl...

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PUM

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Abstract

The invention belongs to the technical field of mineral processing, and in particular relates to a low-temperature flotation combination agent for efficiently collecting scheelite and a use method thereof. The low-temperature flotation combination agent for efficiently collecting scheelite of the present invention is composed of RN2O2Br2, emulsifier and NaOH according to the mass ratio of 1: (0.05~0.10): (0.15~0.25), and its use method is to prepare the combination agent to contain In the process of flotation of scheelite pure minerals, the combined agent aqueous solution with a mass fraction of 6wt% is added to the scheelite pulp with the combined agent aqueous solution accounting for 0.01-0.05% of the scheelite mineral, and the flotation temperature is controlled at 18-25°C. Adjust the pH of the flotation pulp to 6.5~8, and the final scheelite floatability rate reaches 91.0~98.7%. The raw material of the flotation combination medicament of the present invention is safe and non-toxic, the preparation method is simple, the chemical composition and properties are stable, it is used for scheelite flotation, has good selectivity, is less disturbed by other ions in the pulp, and has strong collection performance for scheelite. When in use, the dosage is small and the operating temperature is low, which can save energy and reduce flotation costs.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a low-temperature flotation combination reagent for efficiently collecting scheelite and a use method thereof. Background technique [0002] my country is rich in tungsten resources. Before the 1980s, the mining of tungsten resources in my country was dominated by black and white tungsten ore and scheelite resources. There were not many concentrators processing this type of ore. Therefore, at this stage The main research object of beneficiation technology is wolfram ore. After entering the 1980s, my country's geological exploration focuses on the prospecting of large and medium-sized scheelite, and the proven reserves of scheelite resources have increased significantly. In order to adapt to this change, the focus of mineral processing research has also shifted to the mineral processing research of scheelite and black and white tungsten mixed ore. In genera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/018B03D101/02B03D103/04
Inventor 朱一民韩跃新李艳军
Owner NORTHEASTERN UNIV LIAONING