Method for detecting content of impurities in titanium sponge

Abstract

The invention provides a method for detecting the content of impurities in titanium sponge. The method comprises the following steps: 1) weighing titanium sponge, and recording the initial mass of thetitanium sponge; 2) wiping the titanium sponge for removing TiCl4, weighing the wiped titanium sponge, and recording the mass; 3) adding ethanol and a catalyst, performing heating to the preset temperature, and measuring the quantity of the generated gas; 4) adding an acid indicator, and performing titration with acid till the end point of titration; 5) performing filtration for removing insoluble substances, and equally dividing the solution into three parts; 6) adding a metal indicator to the first part of the solution, and performing titration with EDTA (Ethylene Diamine Tetraacetic Acid)till the end point of titration; 7) adding mercury nitrate to the second part of the solution, and performing titration; 8) measuring the content of all Ti elements in the third part of the solution;and 9) calculating the content of all impurities according to the consumption of related substances. The method provided by the invention has the advantages that the needed detection equipment is simple, detection steps are simple, and the content of all substances can be obtained by measuring the content of Mg, Cl and Ti.

Description

technical field [0001] The invention relates to a method for measuring impurity content in sponge titanium, which is applied to the detection of products obtained by magnesia thermal reduction of titanium tetrachloride in a small atmosphere furnace. Background technique [0002] At present, the industrial method of titanium metal production is the Kroll method. In the production process, titanium-containing minerals (rutile, high-titanium slag, etc.) are chlorinated (shaft furnace chlorination, molten salt chlorination, boiling chlorination, etc.) to produce TiCl 4 , and then use the magnestic reduction method to reduce the TiCl 4 It is converted into a single substance form, and then the reduced product is processed by vacuum distillation to remove volatile impurities to obtain a titanium sponge product. The process of preparing titanium sponge by this method belongs to batch production, which fails to realize the continuous production, and the production takes a long tim...

AI Technical Summary

Problems solved by technology

However, the existing sponge titanium impurity detection technology for the product obtained by the integrated method of magnesia thermal reduction-vacuum distillation has complex and cumbersome detection methods, low analysis speed and low sensitivity.