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A method for extracting titanium metal

A technology for extracting metals and alkali metals, which is applied in the field of non-ferrous metal smelting, can solve the problems of high energy consumption and low current efficiency, and achieve the effects of high production efficiency, cost saving and subsequent processing cost reduction

Active Publication Date: 2018-05-11
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these preparation methods are still in the stage of laboratory research, and problems such as low current efficiency, high energy consumption, and continuous production need to be solved.

Method used

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  • A method for extracting titanium metal
  • A method for extracting titanium metal
  • A method for extracting titanium metal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] TiCl 4 Pass it into NaF-KCl molten salt with a total weight of 5kg at 720°C (the mass fraction of NaF is 20%) at a speed of 1.7L / min. After 1min, connect a Φ20 graphite rod to the anode, and a Φ15 carbon steel rod as the cathode. The electrolysis was carried out under high temperature, the control voltage was 2.3V, and the current intensity was 100A. After electrolysis for 1h, the cathode product was taken out, cooled to room temperature in an argon protective atmosphere, and the electrolyte was washed away with 0.5%wtHCl at 60°C, and repeated with deionized water. Wash, then dry in a vacuum oven at 60°C for 12 hours, weigh to obtain 40.5g of titanium powder, the yield is 90.8%, and the product quality reaches the TF-2 level in YST 654-2007 by analysis.

Embodiment 2

[0061] TiCl 4 Pass KF-NaCl-CaCl with a total weight of 5kg at 750°C at a speed of 1.7L / min 2 Molten salt (wherein CaCl 2 In the case where the molar ratio to NaCl is 1:1, and the KF mass fraction is 15%, after 1 min, the Φ20 graphite rod is connected to the anode, and the Φ15 carbon steel rod is used as the cathode to carry out electrolysis under 100A direct current, the control voltage is 2.3V, and the current intensity is 100A, after 1 hour of electrolysis, the cathode product was taken out, cooled to room temperature in an argon protective atmosphere, taken out and washed with 0.5% wtHCl at 60°C to remove the electrolyte, and washed repeatedly with deionized water, then dried in a vacuum oven at 60°C for 12 hours, weighed 38.8g of titanium powder was recovered, the yield was 86.6%, and the product quality was analyzed to reach the TF-2 level in YST 654-2007.

Embodiment 3

[0063] TiCl 4 Pass KF-LiCl-BaCl with a total weight of 5kg at 600°C at a speed of 1.7L / min 2 Molten salt (wherein BaCl 2 LiCl molar ratio is 1:3, KF mass fraction is 15%), Φ20 graphite rod is connected to the anode after 1min, Φ15 carbon steel rod is used as the cathode, and the electrolysis is carried out under 100A direct current, the control voltage is 2.3V, and the current intensity is 100A, after 1 hour of electrolysis, the cathode product was taken out, cooled to room temperature in an argon protective atmosphere, taken out and washed with 0.5% wtHCl at 60°C to remove the electrolyte, and washed repeatedly with deionized water, then dried in a vacuum oven at 60°C for 12 hours, weighed 39.8g of titanium powder was recovered, the yield was 89%, and the product quality was analyzed to reach the TF-2 level in YST 654-2007.

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Abstract

The invention belongs to the technical field of nonferrous metal smelting, and in particular relates to a method for extracting metal titanium. The technical problem to be solved by the present invention is to provide a method for extracting metal titanium, which includes the following steps: fully reacting TiCl4 with a reactant in a molten state, and then electrolytically separating titanium; the reactant includes alkali metal fluorine Salt. The method can effectively separate titanium from titanium tetrachloride, and has the advantages of short process, low energy consumption, continuous operation and the like.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal smelting, and in particular relates to a method for extracting metal titanium. Background technique [0002] Titanium and titanium alloys have a series of excellent properties such as low density, high specific strength, heat resistance and corrosion resistance, and are widely used in aerospace, national defense, petroleum industry, ocean, energy, transportation, chemical industry, sports, medical treatment, civil and many other field. Titanium is also known as "metal of the 21st century", "almighty metal" and "modern metal". Titanium is one of the most abundant elements in the earth's crust. my country is rich in titanium resources, large reserves, and widely distributed. The proven reserves of titanium resources in the Panxi map of Sichuan and Chengde, Hebei are about 1 / 4 of the world's total. In 2014, my country's titanium sponge production capacity was about 150,000 t·a -1 , with an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C3/28
Inventor 朱福兴孙朝晖邱克辉胡鸿飞穆天柱马尚润程晓哲郑权邓斌张瑶
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP