Novel titanium tetrachloride preparation process suitable for characteristics of titanium resources in China and device thereof

Abstract

According to the present invention, an existing device for producing titanium tetrachloride through fluidizing chlorination is subjected to innovative design optimization, such that a novel process with a reasonable overall structure and a reasonable function and a novel device thereof are formed. A molten salt section with a specific function is additionally arranged, so that the functions of uniform chlorine gas flow distribution and preheating, molten salt purification, heat preservation, storage and controllable discharge are achieved; the problem of availability of raw materials suitable for titanium resource characteristics (high calcium, magnesium and titanium slag) in China is solved; adverse effects on continuous and stable production caused by retention and accumulation of high-boiling-point chlorides at the lower part of the boiling section are avoided, and continuous and stable production of titanium tetrachloride prepared from the high-calcium-magnesium high-titanium slag is realized; thermodynamic and dynamic conditions for chlorination reaction of unreacted furnace charge falling into the bottom (the upper surface of a heating carrier) of a boiling bed are enhanced, and the utilization rate of raw materials is increased; and the quality of the high-boiling-point chlorine salt is improved, so that the high-boiling-point chlorine salt becomes a valuable material. The novel ovel titanium tetrachloride preparation process and the device thereof are suitable for the characteristics of titanium resources in China.

Description

technical field [0001] The invention relates to the field of industrial production of titanium dioxide and titanium sponge. [0002] In particular, it relates to a new process and device for preparing titanium tetrachloride suitable for the characteristics of titanium resources in my country (high calcium, magnesium and high titanium slag). Background technique [0003] my country is very rich in titanium resources, the reserves rank first in the world, accounting for 48% of the world's total proven reserves. Ilmenite accounts for 98% of my country's total titanium resources reserves, and rutile only accounts for 2%. [0004] Ilmenite is beneficiated to obtain titanium concentrate, which is smelted and reduced in an electric furnace to separate the titanium dioxide and iron in the titanium concentrate, and the high-content titanium dioxide enrichment obtained is called high-titanium slag. [0005] High-titanium slag is the main raw material for industrial production of tita...

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