Carbide slag grinding method and low temperature chlorination method for preparing TiCl4

Abstract

The invention provided a carbide slag grinding method and a low temperature chlorination method for preparing TiCl4. The grinding method comprises the following steps: adding the carbide slag raw material in a first cabin of a ball grinding mill for crushing; then feeding the crushed carbide slag into a second cabin for grinding to obtain carbide slag powder, wherein first cabin grinding bodies in the first cabin comprise 60-75 weight percent of steel balls with the diameter of 120 mm, 25-40 weight percent of steel balls with the diameter of 80 mm; second cabin grinding bodies in a second cabin comprise 10-15 weight percent of steel balls with the diameter of 100 mm, 25-45 weight percent of steel balls with the diameter of 80 mm, 25-40 weight percent of steel balls with the diameter of 60mm and 10-15 weight percent of steel balls with the diameter of 40 mm. According to the carbide slag grinding method and the low temperature chlorination method for preparing TiCl4, most of the carbide slag can be grinded to 0.074mm-0.178mm through the reasonable steel ball graduation of the ball grinding mill; the smooth progress of follow-up technology of low temperature fluidizing chlorination of the carbide slag for the production of titanium tetrachloride is guaranteed.

Description

technical field [0001] The invention relates to the field of powder material processing, in particular to a method for grinding carbide slag. Background technique [0002] The Panxi area is rich in vanadium-titanium magnetite, which contains important strategic resources such as iron, vanadium, and titanium. However, due to the complex composition and distribution of the ore, most of the titanium enters Panzhihua Iron and Steel's unique high Titanium blast furnace slag (TiO 2 content up to 20-26%), in order to recover titanium resources in titanium-containing blast furnace slag, Panzhihua Iron and Steel has developed the "high temperature carbonization of blast furnace slag - low temperature selective chlorination to produce TiCl 4 " process, which is to use a carbonaceous reducing agent to perform high-temperature reduction carbonization treatment on blast furnace slag in an electric furnace, and reduce titanium to titanium carbide (TiC). Low-temperature selective chlorin...

AI Technical Summary

Problems solved by technology

But for carbide slag, once a large amount of over-grinding occurs, that is, when the particle size is less than 0.074mm, it will cause a series of problems such as low yield during boiling chlorination and blockage of tail gas treatment system. Therefore, the grinding process of carbide slag It is very important for the smooth flow of subsequent processes

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