Collecting agent, preparation method and method for flotation of fluorite by using collecting agent

Abstract

The invention relates to the technical field of ore flotation, and particularly discloses a collecting agent, a preparation method of the collecting agent and a method for flotation of fluorite through the collecting agent. The collecting agent is prepared from the following raw materials: oleic acid and triethanolamine; the volume ratio of oleic acid to triethanolamine is (1.7-2.3): 1; the concentration of oleic acid is 7-12%; and the concentration of triethanolamine is 8-13%. The preparation method of the collecting agent comprises the following steps: slowly pouring triethanolamine into oleic acid while stirring, and reacting at normal temperature to obtain a modified oleic acid solution, namely the collecting agent. Foam generated after foaming of the collecting agent is fine and smooth, the collecting capacity is high, and the collecting agent still has the good collecting effect at the low temperature (0-5 DEG C). The collecting agent or the collecting agent prepared through the preparation method is applied to fluorite flotation, and the flotation effect on micro-fine particle fluorite is good.

Description

[0001] The priority basis of the present invention includes: the application date of September 30, 2021, the application number 2021111612834, and the invention application with the patent name "a preparation method and equipment for purifying quartz from secondary tungsten tailings". technical field [0002] The application relates to the technical field of ore flotation, more specifically, it relates to a collector and its preparation method and a method for flotation fluorite with the collector. Background technique [0003] Fluorspar, also known as fluorspar, is mainly composed of calcium fluoride (CaF 2 ), the crystals are octahedron and cube, the crystal is glass luster, the color is bright and changeable, the texture is brittle, the Mohs hardness is 4, and the melting point is 1360 ° C. It has the property of complete cleavage. It is a common mineral in nature. Many other minerals coexist. [0004] Oleic acid is a fatty acid collector with the molecular formula C 17...

AI Technical Summary

Problems solved by technology

However, oleic acid has a poor flotation effect on fluorite, which is embodied in the following two aspects: one, oleic acid is insoluble in water and has poor dispersion, so it cannot fully contact with fluorite in water, and the collection of fluorite at normal temperature ( 2. Oleic acid has a high freezing point, low solubility in low-temperature pulp, slow dispersion speed, low activity, and poor flotation effect, especially at low temperature (0-5°C), flotation pulp is harmful to The collection effect of fluorite is very poor. In winter, the pulp solution needs to be heated before flotation, which increases the production cost.

[0005] In order to solve the above technical problems, in the prior art, the commonly used method is to add emulsifiers and surfactants to oleic acid to emulsify and disperse oleic acid, and oleic acid changes from large particles to fine oil particles and disperses In water, to achieve the purpose of fully contacting fluorite, but the flotation effect of flotation slurry on fluorite is not very ideal at low temperature

Moreover, there are strict requirements on the addition of emulsifier and surfactant. If the addition of emulsifier and surfactant is small, the emulsification and dispersion effect of oleic acid is not ideal; if the addition of emulsifier and surfactant is too much, It has an influence on the flotation effect of fluorite

In addition, some emulsifiers and surfactants are harmful and have an impact on the environment and people, and because the foaming effect of oleic acid is not ideal, it is often necessary to add a small amount of foaming agent when flotation fluorite. The foam produced by the foaming agent is not delicate, which will also affect the collection of oleic acid on the fine particles of fluorite

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