Alumyte flotation tailings settling separation method

Abstract

The invention provides a bauxite flotation tailing settlement separation method, which relates to a method for tailing piling of alumina production by floatation mineral processing Bayer method and the modification of front tailings. The method of the invention is characterized in that the modification is carried out by adding lime into the bauxite flotation tailing, so as to lead the organic reagent in the tailings to be calcified and reduce the suspension performance of the micro-particles in the tailings; the tailings are then settled and separated. By adopting the method of the invention, after settlement and concentration, the water of the tailings can be reduced below 45% from current 60-70%, thus providing basic condition for the piling and economic utilization of the tailings.

Description

A kind of sedimentation separation method of bauxite flotation tailings technical field The invention relates to a method for sedimentation and separation of bauxite flotation tailings, which relates to a method for stockpiling tailings produced by the Bayer process of flotation beneficiation and modifying the tailings before utilization. Background technique Bauxite flotation desilication has been successfully applied in my country to process low-grade bauxite to produce alumina by Bayer process. Due to the fine particle size of flotation tailings and the effect of added organic chemicals, its water content is high, and after sedimentation and concentration Between 60% and 70%, it is difficult to stockpile and utilize it. Although tailings paste stockpiling technology has been developed, tailings and fly ash are mixed and cementitious materials are added to make the mixture of tailings a Paste can be stockpiled, but its cost is high, and the utilization value of tailings is...

AI Technical Summary

Problems solved by technology

Bauxite flotation desilication has been successfully applied in my country to process low-grade bauxite to produce alumina by Bayer process. Due to the fine particle size of flotation tailings and the effect of added organic chemicals, its water content is high, and after sedimentation and concentration Between 60% and 70%, it is difficult to stockpile and utilize it. Although tailings paste stockpiling technology has been developed, tailings and fly ash are mixed and cementitious materials are added to make the mixture of tailings a Paste can be stockpiled, but its cost is high, and the utilization value of tailings is lost