Reaction unit for reduction distillation of titanium sponge

Abstract

The invention discloses a reaction unit for reduction distillation of titanium sponge. The reaction unit is mainly composed of a reactor and a big cover. The bottom of the reactor is provided with a screen plate. A conical tower is arranged on the screen plate and welded to the center of the screen plate. The height of the conical tower is greater than that of a titanium lump. The conical tower is of a circular conical structure. The diameter of the tower bottom of the conical tower is greater than or equal to one-second of the diameter of the screen plate. By adopting the reaction unit, the distillation efficiency and the compact structure of products can be improved; moreover, a central tube in an existing reaction unit can be omitted; and the reaction unit is simple in structure and low in manufacturing cost.

Description

Technical field [0001] The invention belongs to the technical field of sponge titanium production, and particularly relates to a reaction device for reduction distillation in the production of sponge titanium by a magnesium reduction method. Background technique [0002] At present, the industrial production of sponge titanium at home and abroad adopts the method of reducing titanium tetrachloride by metal magnesium, that is, in the reduction distillation process, a sieve is set at the bottom of the reaction device, and titanium tetrachloride is reduced by metal magnesium to obtain sponge titanium and magnesium chloride. When discharged, the titanium sponge gradually accumulates on the sieve plate to form a titanium lumps. After the reduction, the magnesium chloride and other impurities in the titanium lumps are removed by distillation to obtain pure titanium sponge. In order to reduce production costs, countries have adopted large-scale equipment as the direction of technologica...

AI Technical Summary

Problems solved by technology

In order to reduce production costs, all countries regard large-scale equipment as the direction of technological development. However, with the increase of the furnace type, the bottom of the sponge titanium-titanium lump structure is dense, and there is a sandwich hard block in the center. In order to ensure that the sponge titanium-titanium lump has no sandwich magnesium chloride , generally increase the distillation high constant temperature time, but this will easily lead to the structure of the titanium sponge becoming denser due to its own weight and high temperature during the distillation process, which seriously affects the quality of the titanium sponge

[0003] The applicant has successively developed technologies such as a reduction distillation device for producing sponge titanium (CN101629248A), a titanium lump separation device for sponge titanium production (CN 104357686 B), etc. Although these technologies can improve the distillation efficiency during distillation, The distillation cycle is shortened, but due to the large-scale furnace, the sponge titanium lump itself is heavy, and the bottom product of the sponge titanium lump is still relatively dense under the pressure of the middle and upper products. Therefore, it is necessary to develop a method that can improve distillation efficiency. Devices that can improve the compact structure of products have become one of the technical problems to be solved in this technical field

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