Titanium carbide preparation method based on carbonization titanium extraction treatment of titanium-bearing blast furnace slag

Abstract

The invention provides a titanium carbide preparation method based on carbonization titanium extraction treatment of titanium-bearing blast furnace slag. The method comprises the steps that the titanium-bearing blast furnace slag serves as the raw material, grinding and balling are conducted, heating is conducted to 1,100 DEG C to 1,300 DEG C, methane is decomposed into hydrogen and carbon black, and a titanium carbide crude product is obtained after reduction and carbonization are conducted; the titanium carbide crude product is subjected to levigating treatment and purifying, and a more pure titanium carbide product can be obtained; the processes of the method are simple and easy to operate, due to the fact that methane is decomposed to obtain hydrogen and carbon black with high activity, hydrogen and the titanium-bearing blast furnace slag are subjected to a gas-solid reaction, and the reduction efficiency is high; meanwhile, by means of the carbon black with the high activity, the carbonization efficiency is greatly improved, the overall reaction efficiency is improved, the carbonization temperature is decreased, tail gas obtained from the reaction is used as gas fuel supply for heating of a closed-type carbide furnace, therefore, energy consumption is effectively reduced, an existing titanium-bearing blast furnace slag resource is better utilized, the added value of the titanium-bearing blast furnace slag is increased, and good industrial application value is achieved.

Description

technical field [0001] The invention relates to the technical field of high-hardness material synthesis, in particular to a method for preparing titanium carbide based on titanium-containing blast furnace slag carbonization and titanium extraction treatment. Background technique [0002] Titanium carbide is a typical transition metal carbide. Its bond type is a mixture of ionic bonds, covalent bonds and metallic bonds in the same crystal structure, so titanium carbide has many unique characteristics. The crystal structure determines that titanium carbide has basic characteristics such as high hardness, high melting point, wear resistance and electrical conductivity. Titanium carbide has iron-gray crystal with metallic luster, cubic crystal system, weak magnetism, has some properties similar to metal, high melting point (3450°C), high boiling point (4300°C), hardness is second only to diamond, and has good thermal and electrical conductivity , and the conductivity decreases...

AI Technical Summary

Problems solved by technology

[0008] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a titanium carbide preparation method based on titanium-containing blast furnace slag carbonization and titanium extraction treatment. The process is simple and easy to operate, the preparation reaction temperature and energy consumption are low, and the reaction efficiency is high. , can be used to solve the problems of complex process, low efficiency, high energy consumption and high cost in the preparation method of titanium carbide in the prior art

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