Method for preparing slime dispersant applicable to primary slime and secondary slime

Abstract

The invention discloses a method for preparing slime dispersant which is applicable to primary slime and secondary slime. Under the redox initiation system of thioglycolic acid-ammonium persulfate, three polymeric monomers, namely, sodium allylsulfonate, maleic anhydride and acrylic acid, are processed by the operation of radical polymerization in an aqueous solution; and higher evocating agent dosage, higher reaction temperature and the addition of molecular weight regulator-isopropanol are used for controlling the molecular weight of the polymers so as to obtain a low molecular weight terpolymer aqueous solution. After the reaction is accomplished, liquid industrial sodium hudroxide is used for neutralizing the PH value to 6-8, and finally the slime dispersant can be obtained. The slime dispersant prepared by the method of the invention has favorable effect of dispersing the primary slime and the secondary slime in metal and non-metal mineral processes, can effectively eliminate or reduce the influence of the slimes on the concentration and the separation of mineral processing of target minerals, improve the efficiency of the concentration and the separation of mineral processing and increase the concentrate quality and the recovery ratio of the target minerals, and can also be used for dispersing the slime in the processes of petroleum extracting and drilling.

Description

technical field [0001] The invention relates to a preparation method of a slime dispersant suitable for primary and secondary slimes, which belongs to the field of industrial fine chemical additives. The slime dispersant prepared by the method can be widely used in various metal and non-metallic minerals Disperse the primary and secondary slime during the beneficiation process, eliminate or reduce the impact of the slime on the beneficiation, enrichment and separation of the target minerals, improve the efficiency of the beneficiation, enrichment and separation, and improve the concentrate quality and recovery rate of the target minerals; It can be used to disperse ore slime in geological drilling and oil extraction to improve operating efficiency and oil yield. Background technique [0002] At present, in the process of developing and utilizing mineral resources and comprehensively recovering target minerals, various metal and non-metal mining enterprises usually separate, ...

AI Technical Summary

Problems solved by technology

However, these inorganic modifiers have limited inhibitory effects on the dispersion of ore slime. When selecting ores with a higher degree of oxidation and weathering and higher clay mineral content or higher grinding fineness, a large amount of primary and secondary ore slimes are used. The sorting operation cannot be carried out normally, and the desliming operation has to be added in the process flow, the slime is removed first, and then the sorting operation is carried out later, and the ore slime often contains certain valuable minerals. Minerals are not recycled, thus reducing the utilization rate of mineral resources