Deep processing method of titanium slag

Abstract

The invention relates to a deep processing method of titanium slag, which comprises the following steps: carrying out the heat preservation after the electrical furnace slag containing titanium is heated before deslagging by utilizing the high-temperature heat of the electrical furnace titanium slag; placing the slag into a heat-preservation crystal growing device for the electrical furnace slag anosovite to be naturally cooled; and growing mineral crystal grains of anosovite in the electrical furnace slag through heat preservation and slow cooling so as to establish the foundation for obtaining anosovite type high-titanium raw materials with high quality through crushing, ore grinding, dissociating and floatation. in the deep processing method provided by the invention, the physical heatof the electrical furnace titanium slag is only utilized and simultaneously a physical separation method at the later stage is adopted to obtain the slag with high titanium content, and the slag withhigh titanium content is suitable for being taken as the raw material of the electrical furnace slag anosovite and the raw material of titanium white by utilizing a chlorination method. The method can effectively enhance the average particle size of the electrical furnace slag anosovite from about 10 mu m to 80-90 mu m, can enhance the mineral crystallization differentiation degree of the electrical furnace smelting slag, and optimizes the substance composition of the electrical furnace slag mineral phase, thereby having good separation properties of the electrical furnace smelting slag, and the produced titanium ore concentrate TiO2 has the grade of 72-80% and has the advantages of high product additional value, low energy consumption and good economic benefit.

Description

technical field [0001] The invention belongs to the field of comprehensive recovery of coal-based direct reduction, in particular to a deep processing method for smelting titanium slag in an electric furnace of vanadium-titanium magnetite and ilmenite. Background technique [0002] Titanium dioxide is considered to be a white pigment with the best performance in the world, and it is widely used in coatings, plastics, papermaking, printing ink, chemical fiber, rubber, cosmetics and other industries. China is currently the second largest consumer of titanium dioxide after the United States, and the growth momentum is rapid and the potential is also very large. With the development of the national economy and the improvement of people's living standards, the market demand will increase sharply. The quality and benefit of titanium dioxide production are closely related to the raw material grade of titanium dioxide. [0003] The distribution rate of titanium in the vanadium-tit...

AI Technical Summary

Problems solved by technology

The advantage of this method is that the process flow is relatively simple, and the disadvantage is that the electric furnace slag TiO 2 The grade is 45%, there are many impurities, high acid consumption, and a large amount of three wastes, so the production of titanium dioxide is seriously polluted, the production cost is high, and the economic benefit is poor

In order to provide high-quality raw materials for the production of titanium dioxide, a titanium selection test was carried out on the direct reduction electric furnace smelting slag of vanadium-titanium magnetite. The study found that the titanium mineral phase and other mineral phases in the electric furnace smelting slag have fine grains and poor crystallization differentiation. Grinding and dissociation is difficult, and the options are poor

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