New method for producing high-quality high titanium slag

Abstract

The invention discloses a new method for producing high-quality high titanium slag, which is characterized by comprising the process flows of pellet preparation by proportioning materials, quick melting, rolling reinforced reduction, and settlement separation. As the whole process is in a high-power running condition, the method shortens the process flow, not only greatly increases the yield, butalso can produce continuously and effectively inhibits the generation of titanium monoxide and titanium carbide generated by a quick reaction of titanium dioxide and carbon at the high temperature and a gradual reaction of the titanium dioxide and the carbon at the intermediate temperature; oxides of iron, silicon, manganese, aluminum and the like quickly finish oxidation-reduction reaction with the carbon at the intermediate temperature; the grade of a product is improved; and the content of titanium dioxide in the high titanium slag product reaches over 85 percent and is improved by over 10percent compared with that of the titanium dioxide in the high titanium slag product produced by the conventional method, and titanium-iron concentrate resources are saved by over 10 percent.

Description

technical field [0001] The invention relates to a production method in the smelting industry, in particular to a production method of high-titanium slag. Background technique [0002] High-titanium slag is the main raw material for the production of titanium dioxide and titanium tetrachloride products, with high quality requirements. At present, most domestic production methods of high-titanium slag adopt the low-power open electric furnace method, that is, a small open submerged electric furnace is used, and the resistance arc heat generated by the three-phase electrode through the furnace charge is used as the heat source, and the thermal efficiency is ≤65%. The arc light generated by the lower end of the three-phase electrode on the charge forms an ultra-high temperature zone, which reaches the temperature condition for titanium dioxide to be reduced by carbon, and destroys the mineral phase structure of titanium dioxide. More than 12% of the primary titanium dioxide in ...

AI Technical Summary

Problems solved by technology

At present, most domestic methods of producing high-titanium slag adopt the low-power open electric furnace method, that is, a small open submerged electric furnace is used, and the resistance arc heat generated by the three-phase electrode through the furnace charge is used as the heat source, and the thermal efficiency is ≤65%. The arc light generated by the lower end of the three-phase electrode on the charge forms an ultra-high temperature zone, which reaches the temperature condition for titanium dioxide to be reduced by carbon, and destroys the mineral phase structure of titanium dioxide. More than 12% of the original titanium dioxide in the charge is reduced to a Titanium oxide, more than 2% of titanium dioxide is reduced to form titanium carbide, the content of titanium dioxide in the main product high-titanium slag is reduced by 12%-16% compared with the same period, and the grade is low. Each high-titanium slag electric furnace wastes 1,000 tons of ilmenite concentrate per year above