Ilmenite-containing ilmenite separation beneficiation method

Abstract

The invention relates to an ilmenite-containing ilmenite separation beneficiation method, and belongs to the field of mineral processing. The ilmenite-containing ilmenite separation beneficiation method comprises the following process steps that strong magnetic pre-selection is carried out on the titanium-containing hematite powder under the condition of the magnetic field intensity of 5000 Gs-13000 Gs, so as to obtain the titanium-iron mixed coarse concentrate; the titanium-iron mixed crude concentrate is roasted in a reducing atmosphere, wherein the roasting temperature is 500-620 DEG C, sothat the weakly-magnetic hematite is subjected to a reduction reaction to be converted into strong magnetic iron ore; cooling and grinding is carried out; and weak magnetic separation is carried out on the ground product under the condition that the magnetic field intensity is 750-1600 Gs, and the weak magnetic separation concentrate and the tailings are obtained. The method has the advantages ofhigh titanium recovery rate, high iron recovery rate, simple process structure and high production efficiency; and the comprehensive cost is low, the economical efficiency is good, the environment isprotected, the pollution is avoided, and the resources can be efficiently utilized, and the like.

Description

technical field [0001] The invention relates to a method for separating and beneficiating ilmenite minerals containing titanium hematite, which belongs to the field of mineral processing. Background technique [0002] Titanium and its alloys are widely used in the fields of aerospace, aviation and national defense because of their low density, high strength, high temperature resistance and corrosion resistance. In response to the growth of ore demand, it is of great practical significance to carry out research on the recovery and utilization of titanium resources. The primary ores are basically symbiotic ores, and there are different types of ilmenite, titanomagnetite and ilmenite. At present, the raw material of the titanium industry is mainly ilmenite, accounting for about 80% of the world's total titanium resources (according to TiO 2 calculate). At present, domestic research on titanium-containing hematite is less, not only because 95% of my country's titanium resourc...

AI Technical Summary

Problems solved by technology

At present, domestic research on titanium-containing hematite is less, not only because 95% of my country's titanium resources exist in primary vanadium-titanium magnetite ore, and there are few titanium-containing hematite resources; , specific magnetic susceptibility and electrical conductivity are close to those of ilmenite. Therefore, when using gravity separation, strong magnetic separation or electric separation to enrich ilmenite from iron dressing tailings, hematite will also enter titanium roughing In concentrate ore, this will not only fail to effectively separate ilmenite, but also increase the difficulty of subsequent purification of ilmenite

In addition, even in vanadium-titanium-magnetite deposits, there is also a small amount of hematite. When enriching ilmenite, this part of hematite will also enter the titanium concentrate, reducing the grade of titanium concentrate.