Mineral processing technology to improve the recovery rate of titano-magnetite

Abstract

The invention belongs to the technical field of beneficiation, and provides a beneficiation technology for improving the recovery rate of titanomagnetite. The beneficiation technology for improving the recovery rate of the titanomagnetite comprises the processes of crushing, first section ball-milling and cyclone circuit closing, first section strong magnetic separation, ferromagnetic selection, iron re-election, and titanium beneficiation sub technology; after the crushing process of a raw ore, the crushed product is fed into the first section ball milling of the first section ball milling cyclone circuit closing, then fed into a cyclone, grit in the cyclone is returned to the first section ball milling, and the overflow of the cyclone is fed into the first section strong magnetic separation; concentrate of the first section strong magnetic separation is fed into the ferromagnetic selection, tailings of the ferromagnetic selection are fed into the iron re-election, and the concentrateof the ferromagnetic selection and the concentrate of the iron re-selection constitute an iron concentrate together; and the tailings of the first section strong magnetic separation and the tailingsof the iron re-selection are fed into the titanium beneficiation sub technology, and the concentrate of the titanium beneficiation sub technology is titanium concentrate. According to the beneficiation technology for improving the recovery rate of titanomagnetite, the recovery rates of iron and titanium are much higher than that of a traditional ore beneficiation technology, the quality of the recovery is good, and efficient recycling of iron and titanium resources is realized.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, in particular to a mineral processing process for improving the recovery rate of titano-magnetite. Background technique [0002] As a kind of iron ore, titanium magnetite exists widely at home and abroad. The main useful metals of this type of ore are iron and titanium. The iron content is generally not high, most of which are between 12% and 20%. TiO 2 The content is generally between 2% and 5%. Titanomagnetite is generally associated with ilmenite, and the two minerals are in a continuous state when they are coarse. The occurrence state of iron in this kind of ore is relatively complicated. The iron distributed in titanium magnetite is generally about 50%, and the rest is mainly composed of ilmenite, false hematite, red (brown) iron ore and iron silicate. form exists. The occurrence form of titanium in the ore is also relatively dispersed, in the form of TiO in the form of ilmenite...

AI Technical Summary

Problems solved by technology

However, in this way, a large amount of non-magnetic useful minerals such as hematite (brown) are often thrown out during dry tailing, and part of the ilmenite that has been dissociated from titanomagnetite when it is coarse-grained If it is thrown out, the recovery rate of iron and titanium will be lost by about 45% during dry selection; and the current concentrator only adopts weak magnetic separation when selecting iron, and most of the weak magnetic minerals and non-magnetic minerals cannot be obtained Recycle

[0004] The above-mentioned beneficiation measures in current concentrators will greatly reduce the recovery rate of useful minerals iron and titanium. Often, the recovery rate of titanium and iron in such a concentrator is basically around 40%, and most of the useful metals are wasted. , does not meet the requirements of efficient resource recovery

Images