Boiling chlorination furnace for preparing titanium tetrachloride by using natural rutile

Abstract

The invention discloses a boiling chlorination furnace for preparing titanium tetrachloride by using natural rutile. The boiling chlorination furnace comprises a boiling section (4). The boiling section (4) is connected with an expanded section (7) through a transitional section (6). A slag discharge port (10) and a hearth sealing cover (1) are arranged at the lower end of the boiling section (4). A chlorine inletting pipe (2) is inserted into the hearth sealing cover (1). A chorine distribution plate (3) is arranged between the hearth sealing cover (1) and the slag discharge port (10). A feeding pipe (5) is arranged on one side of the boiling section (4). A furnace top cover (8) is arranged at the upper end of the expanded section (7). A gas outlet (9) is arranged on the furnace top cover (8). The invention has the advantages that the normal operation of the boiling chlorination furnace is guaranteed, and the investment and the maintenance expense of the boiling chlorination furnace are saved. Moreover, since the chlorine distribution plate is placed at the bottom of the boiling section, the elasticity of the boiling chlorination furnace is good, the operation and the control are easy, the sieve openings are not blocked and the chlorine is evenly distributed.

Description

technical field [0001] The invention relates to a boiling chlorination furnace for preparing titanium tetrachloride from natural rutile, belonging to the technical field of titanium tetrachloride preparation. Background technique [0002] Titanium tetrachloride is the raw material for the production of titanium sponge and the production of titanium dioxide by gas-phase oxidation. It is obtained by chlorinating titanium-rich materials with chlorine gas in the presence of carbon. At present, the industrial production methods of titanium tetrachloride in China include molten salt chlorination and boiling chlorination, and the titanium-rich materials used are all high-titanium slags. Due to the uneven particle size of high-titanium slag, 21% are larger than 75 mesh, and about 43% are below 200 mesh. In order to achieve a good settlement effect, the boiling section sectional area is used for the boiling chlorination furnace used: expanding section sectional area =1:16 structure,...

AI Technical Summary

Problems solved by technology

Due to the uneven particle size of high-titanium slag, 21% are larger than 75 mesh, and about 43% are below 200 mesh. In order to achieve a good settlement effect, the boiling section sectional area is used for the boiling chlorination furnace used: expanding section sectional area = 1:16 structure, high investment cost and maintenance cost of the furnace

In addition, there are also successful rutile boiling chlorination tests at present, but the development has just started, and there are still many shortcomings, such as the complex structure of the boiling chlorination furnace, cumbersome manufacturing, etc.

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