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Method for preparing metal Ti by using hydrogen to induce Mg to restore TiO2

A metal and hydrogen pressure technology, applied in the field of metal materials, can solve the problems of complex process, restriction of titanium development and commercial application, high cost of titanium and titanium alloy preparation, and achieve simple process, short preparation time and less impurities Effect

Inactive Publication Date: 2013-10-16
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing problem is that the preparation cost of titanium and titanium alloy is high, and the process is complicated, which limits the further development and commercial application of titanium. Therefore, how to reduce the preparation cost of titanium and titanium alloy is the main task of developing the titanium industry at present.
At present, the FFC method is only successful in the laboratory, and there are still many problems to be solved in order to realize industrialization

Method used

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  • Method for preparing metal Ti by using hydrogen to induce Mg to restore TiO2

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh TiO with a mass ratio of 4.5:3.5 2 and Mg, grind and mix in an agate mortar until the composition is uniform, and press it to Ф10×10mm under a pressure of 700MPa 2 The billet is put into the furnace and vacuumed to 10 -1 Pa, filled with 1.0MPa high-purity hydrogen, then heated up to 700°C at a rate of 10°C / min, and kept at 700°C for 3 hours to obtain TiH 2 Mixed powder with MgO, then evacuated to pressure ≤ 10 -1 Pa, then raise the temperature to 800°C for 2 hours to dehydrogenate in vacuum to obtain Ti and MgO, and after cooling to room temperature, pickle and dry to obtain powdered titanium metal.

Embodiment 2

[0020] Weigh TiO with a mass ratio of 5.5:2.5 2 and Mg, grind and mix in an agate mortar until the composition is uniform, and press it to Ф10×10mm under a pressure of 700MPa 2 The billet is put into the furnace and vacuumed to 10 -1 Pa, filled with 0.1MPa of high-purity hydrogen. Then the temperature was raised to 800°C at a rate of 10°C / min, and kept at 800°C for 5 hours to obtain TiH 2 Mixed powder with MgO, then evacuated to pressure ≤ 10 -1 Pa, then raise the temperature to 900°C for 1h to dehydrogenate in vacuum to obtain Ti and MgO, and after cooling to room temperature, pickle and dry to obtain powdered titanium metal.

Embodiment 3

[0022] Weigh TiO with a mass ratio of 5:3 2 and Mg, grind and mix in an agate mortar until the composition is uniform, and press it to Ф10×10mm under a pressure of 700MPa 2 The billet is put into the furnace and vacuumed to 10 -1 Pa, filled with 0.3MPa high-purity hydrogen, then heated up to 750°C at a rate of 10°C / min, and kept at 750°C for 2 hours to obtain TiH 2 Mixed powder with MgO, then evacuated to pressure ≤ 10 -1 Pa, then raise the temperature to 1000°C for 1h vacuum dehydrogenation to obtain Ti and MgO, after cooling to room temperature, pickling and drying to obtain powdered titanium metal.

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Abstract

The invention belongs to the field of metal materials and relates to a method for preparing metal Ti by using hydrogen to induce Mg to restore TiO2, which is characterized in that industrial TiO2 powder and industrial Mg powder are adopted as raw materials and are mixed uniformly to be pressed into blocks, mixtures of TiH2 and MgO are obtained through reduction reaction in a certain hydrogen pressure range and a certain temperature range, and metal Ti powder is obtained after vacuum hydrogen releasing processing and pickling drying of the mixtures. Compared with the existing other preparing processes of metal Ti, the method is simple in process, low in cost, short in reaction time and free of environment pollution. The preparing process of the method has wide prospect in industrialized production of Ti and other alloy.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to a method for reducing TiO by using hydrogen to induce Mg 2 Method for producing titanium metal. Background technique [0002] Titanium is an emerging metal with the advantages of low density, high strength, good corrosion resistance and high specific strength. It is an important metal structural material and functional material. and other fields have a wide range of applications. At present, all countries in the world have realized the importance of titanium and its alloys, and have invested a lot of manpower and material resources in the research and development of titanium and its alloys. The existing problem is that the preparation cost of titanium and titanium alloy is high, and the process is complicated, which limits the further development and commercial application of titanium. Therefore, how to reduce the preparation cost of titanium and titanium alloy is the main task of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/20
Inventor 宋西平陈宁赵超
Owner UNIV OF SCI & TECH BEIJING
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