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Low-temperature flotation combined reagent for efficiently collecting scheelite and usage method thereof

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

Active Publication Date: 2015-10-21
NORTHEASTERN UNIV
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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 ...

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 comb...

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 th...

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Abstract

The invention belongs to the technical field of mineral processing, in particular to a low-temperature flotation combined reagent for efficiently collecting scheelite and a usage method thereof. The low-temperature flotation combined reagent is prepared from RN2O2Br2, an emulsifier and NaOH according to the mass ratio being 1 to (0.05-0.10) to (0.15-0.25). The usage method comprises the following steps: preparing the combined reagent into a combined-reagent aqueous solution containing the mass part being 6 weight percent; in the mineral flotation process of scheelite, adding the combined-reagent aqueous solution being 0.01-0.05 percent of scheelite in mass into scheelite pulp, controlling the flotation temperature to 10-25 DEG C, regulating the pH of the flotation pulp to 6.5-8, and therefore finally enabling the floating rate of scheelite to be 91.0-98.7 percent. The flotation combined reagent has the advantages of being safe and non-toxic in raw materials, simple in preparation method, stable in chemical component and property, used for scheelite flotation, good in selectivity, small in interference by other ions in the ore pulp and strong in collecting property for scheelite. During use, the dosage is small, the usage temperature is low, energy can be saved, and the flotation cost can be reduced.

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 gener...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D101/02B03D103/04
Inventor 朱一民韩跃新李艳军
Owner NORTHEASTERN UNIV
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