Vacuum system for producing sponge titanium by using 7.5-ton I-type furnace

Abstract

The invention discloses a vacuum system for producing sponge titanium by using a 7.5-ton I-type furnace and belongs to the field of sponge titanium preparation. The vacuum system solves the problem that in an existing vacuum system, a sliding valve pump is used as a coarse pumping pump, and sponge titanium is polluted by pump oil. According to the technical scheme, the vacuum system for producingthe sponge titanium by using the 5-ton I-type furnace comprises a low vacuum pumping passage, a middle vacuum pumping passage and a high vacuum pumping passage. The low vacuum pumping passage comprises a distiller, a first pneumatic baffle valve, a first catcher, a first manual valve, a second manual valve and third pneumatic baffle valve and a first screw pump. The middle vacuum pumping passage comprises a distiller, a first pneumatic baffle valve, a first catcher, a first manual valve, a pneumatic inserting plate valve, a third manual valve and fourth pneumatic baffle valve, a roots pump anda second screw pump. The high vacuum pumping passage comprises a distiller, a second pneumatic baffle valve, a second catcher, an oil booster pump, a third manual valve and fourth pneumatic baffle valve, a roots pump and a second screw pump. The vacuum system is suitable for preparing the sponge titanium by adopting a vacuum distillation method.

Description

technical field [0001] The invention belongs to the field of sponge titanium preparation, and in particular relates to a vacuum system for producing sponge titanium in a 7.5-ton I-type furnace. Background technique [0002] Titanium and titanium alloys have the characteristics of high strength, corrosion resistance and high temperature resistance, and are widely used in aerospace, deep sea exploration, chemical industry, medical treatment and other fields. Sponge titanium is used as a raw material for the preparation of titanium and titanium alloys, and is industrially prepared by magnesia thermal reduction. Magnesium reduces TiCl 4 The resulting titanium sponge has 8-12% MgCl remaining 2 , 25 to 30% of Mg is generally separated by vacuum distillation in industry. [0003] The vacuum system is an important part of the sponge titanium production device, and its ultimate vacuum degree, pumping rate, air tightness and other properties directly affect the vacuum separation ef...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a vacuum system for producing titanium sponge in a 7.5-ton I-type furnace, which solves the problem that the existing vacuum system uses a slide valve pump as a roughing pump, and the pump oil pollutes titanium sponge.

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