The preparation method of comb type macromolecule flotation agent

Abstract

The invention discloses a preparation method of a comb type high-molecular flotation agent. The preparation method is characterized by comprising the following concrete steps: (1) preparing allyl-polyoxyethylene ether phosphate; (2) preparing a comb type high-molecular polymer: adding allyl-polyoxyethylene ether phosphate, fluoro-alcohol polyoxyethylene ether (methyl) acrylate, acrylamide and water into a reaction kettle, and reacting at the temperature of 80-100 DEG C for 3-5h under the action of an oxidation-reduction initiating system to obtain the comb type high-molecular polymer, wherein the mole ratio of allyl-polyoxyethylene ether phosphate to fluoro-alcohol polyoxyethylene ether (methyl) acrylate to acrylamide is 1: (0.05-0.5): (3-5), the dosage of an oxidizing agent is 0.5-5% of the sum of the mass of unsaturated monomers, and the mole ratio of the oxidizing agent to a reducing agent is 1: (0.5-3.5).

Description

technical field

[0001] The invention relates to a preparation method of a comb-shaped polymer flotation agent. Background technique

[0002] Flotation beneficiation is an important method of mineral separation, which is widely used in coal, non-metal, non-ferrous metal and many other fields. In the flotation process, the ups and downs of minerals have almost nothing to do with their density, but due to the difference in surface hydrophilicity-hydrophobicity and wettability, which is called buoyancy. Among them, the application of flotation agents is extremely important. After being treated with flotation reagents, the buoyancy of minerals can be changed, so that the target minerals can be selectively adsorbed on the air bubbles, so as to achieve the purpose of mineral processing.

[0003] The coal flotation process is as follows: the coal powder is made into a certain concentration of coal slurry, and a flotation agent is added to expand the difference in wettability and h...