A method of enriching ilmenite

Abstract

The invention discloses a method for enriching ilmenite. The method comprises the steps of carrying out grinding, weak magnet deironing and classification on an ilmenite raw material to obtain materials with two particle sizes of +0.038 mm and -0.038 mm; carrying out medium and strong magnet iron removing on the material with the particle size of +0.038 mm, so as to obtain coarse titanium ore; carrying out magnetic separation on the coarse titanium ore, so as to obtain coarse titanium concentrate 1 and tailings 1; and carrying out magnetic separation on the material with the particle size of -0.038 mm, so as to obtain coarse titanium concentrate 2 and tailings 2. According to the method, different gradient values are obtained through utilizing the difference of mineral magnetism and accurately adopting different magnetic field strength and media, the enrichment of ilmenite is effectively achieved, the level of the obtained coarse titanium concentrate 1 can be improved to 26 to 28%, the recovery rate can reach 80 to 85%, an available method is further provided for enrichment and recycling of ilmenite with the ultrafine-particle size of -0.038 mm, ilmenite tailings with the particle size of -0.038 mm in a conventional technology are effectively enriched and recycled, and resource waste is reduced.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, in particular to a method for enriching ilmenite. Background technique [0002] Ilmenite is an oxide mineral of iron and titanium, which accounts for at least 85% of the world's titanium raw materials. It is the main ore for extracting titanium, so it is regarded as an important mineral material. my country's ilmenite resource reserves rank first in the world, mainly primary ilmenite, accounting for 94.5% of the resources. With the shortage and rising price of natural rutile, stable supply and low price of ilmenite is becoming an important raw material for production. However, TiO in ilmenite 2 The grade is low and generally contains other impurities. Therefore, the enrichment of ilmenite has received great attention in the field of mineral processing. [0003] At present, the enrichment method of primary ilmenite ore in China is mainly to enrich the ilmenite ore after crushing and...

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