Method for comprehensively using titanium concentrate with high calcium and magnesium content

Abstract

The invention relates to the technical field of comprehensive utilization of a titanium concentrate with the high calcium and magnesium content, and particularly discloses a method for comprehensively using the titanium concentrate with the high calcium and magnesium content. The titanium concentrate with the high calcium and magnesium content, a reducing agent and a binder are mixed to be pressed into pellets; the pellets are fed into a vacuum carbon tube furnace for vacuum melt separation, wherein the vacuum melt separation is characterized in that constant temperature processing is carried out on the pellets for 30 min to 60 min at the control temperature ranging from 900 DEG C to 1100 DEG C and the vacuum degree ranging from 50 Pa to 100 Pa; and then the temperature is adjusted to range from 1450 DEG C to 1550 DEG C, constant temperature processing is carried out for 30 min to 45 min, solid left in the vacuum carbon tube furnace is collected, titanium dichloride slag is obtained, solid left in a condensation collector is collected, and ferrosilicon is obtained. By means of the method, the energy consumption is low, the technological process is short, the added value of products is high, and the grade of titanium slag can be improved to more than 90%.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of high-calcium-magnesium-titanium concentrate, in particular to a method for comprehensively utilizing high-calcium-magnesium-titanium concentrate. Background technique [0002] my country's Panzhihua and Xichang areas have world-famous super-large vanadium-titanium magnetite symbiotic deposits, and its vanadium-titanium resources occupy an important position at home and abroad. The proven reserves of vanadium-titanium magnetite exceed 10 billion tons, of which titanium (TiO2) 593 million tons, accounting for about 90.5% of the country's titanium reserves, accounting for 35% of the world's reserves. Titanium resources are mainly contained in vanadium-titanium magnetite. Titanium concentrate is obtained through secondary beneficiation of tailings from primary beneficiation, which is similar to rock-type high-calcium magnesium ilmenite, with TiO2 content of about 47%, calcium , Ma...

AI Technical Summary

Problems solved by technology

However, this method severely corrodes the equipment, produces a large amount of by-products and three wastes, and has great pressure on environmental protection, thus limiting the use of this method.

[0007] For this reason, on the basis of the above-mentioned technical problems, some researchers have adjusted the process of producing titanium chloride slag products from high-calcium-magnesium-titanium concentrate, such as the patent No. 201410224517. The method of preparing titanium chloride slag from ore" by pressing high-calcium magnesium titanium concentrate into balls, and then treating it with a pre-reduction temperature of 1350-1400 ° C for 20-40 minutes, and then controlling the vacuum degree to 50-150Pa , the melting temperature is 1450-1550°C and the melting treatment is 15-40min, and then the titanium chloride slag is obtained; it can be seen from the above that the process flow of this treatment is relatively long, and in the process of treatment, pre-reduction treatment and melting The treatment is carried out separately, which leads to a large energy consumption in the treatment process, and the grade of the obtained titanium slag product reaches 87%, which does not improve the grade of the titanium slag product to the optimum

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