A kind of preparation method of stone coal extraction vanadium resin

Abstract

The invention provides a preparation method of resin for extracting vanadium from stone coal. The preparation method is characterized by adopting chloromethyl polystyrene to carry out amination reaction with perfluorinated secondary amine and polyethylene polyamine simultaneously. The resin has high functional group content, high adsorption quantity and long service life. The preparation method has the beneficial effects that organic amines and perfluorinated aromatic diamine are simultaneously adopted as aminating agents; the fluorine element has hydrophobicity and lipophilicity at the same time, so that the compatibility between aminating agents and chloromethylated beads is improved, thus improving the efficiency of amination reaction, and the capability of complexing perfluorinated aromatic diamine and vanadium-containing anions is reinforced, thus improving the adsorption capability; by introducing fluorine-containing groups, the corrosion resistance of a resin insert is reinforced and the surface of the sphere is protected, thus prolonging the service life and expanding the application range of the resin.

Description

technical field [0001] The invention relates to a preparation method of anion exchange resin, in particular to a preparation method of stone coal vanadium extraction resin. Background technique [0002] my country's vanadium-bearing stone coal is mainly distributed in the southern provinces, and the total reserves are abundant, and the vanadium occurring in it is estimated to exceed the total reserves of vanadium in other countries in the world. In addition, the United States, Russia and other countries also have some similar resources. The grade of vanadium in vanadium-bearing stone coal is 0.3% to 1.0%, and vanadium occurs in the form of variable price. Its mineral composition is complex, and it is difficult to separate and extract. First use roasting, acid leaching, alkali leaching and other processes to convert the vanadium in the vanadium-containing solid waste into water-soluble vanadium-containing ions, such as VO 3- (Because the pH value of the solution is differen...

AI Technical Summary

Problems solved by technology

[0005] At present, the commonly used ion exchange resins in the vanadium extraction industry are traditional polystyrene-based anion exchange resins such as D201, D301, and D290. However, the actual adsorption capacity of ion exchange resins for vanadium extraction is still low, and is generally low in practical applications. less than 90mg / g; the resin can easily reach the saturated adsorption capacity during use, and needs to be regenerated and updated frequently, resulting in a higher total cost of vanadium extraction

The method of using organic amine and vanadium compound to participate in the polymerization reaction will affect the uniformity of polymerization, resulting in the reduction of resin strength after long-term use, which affects the use effect in industrial devices