Titanium tetrachloride charging method for production of sponge titanium

A technology of titanium tetrachloride and feeding method, applied in the field of non-ferrous metal smelting, can solve the problems of lower product grade and high Brinell hardness, and achieve the effects of small quality impact, easy operation and obvious economic benefits

Active Publication Date: 2012-12-12
朝阳金达钛业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The entry of impurities Fe and Mn into titanium sponge will not only reduce the product grade, but also lead to high Brinell hardness, which will lead to more product degradation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 3 ton furnace charging process

[0021] The melting temperature of the magnesium ingot is set at 780°C, and the melting constant temperature time is 5 hours. After the magnesium ingot is melted, titanium tetrachloride is added at a feeding rate of 80kg / h, and the constant temperature of the feeding pipe is 150°C. Stop feeding after adding 160kg of titanium tetrachloride, and continue feeding according to the normal process after keeping the temperature at 720°C for 1 hour.

Embodiment 2

[0023] 5 ton furnace charging process

[0024] The melting temperature of the magnesium ingot is set at 800°C, and the melting constant temperature time is 7 hours. After the magnesium ingot is melted, titanium tetrachloride is added at a feeding rate of 100kg / h, and the constant temperature of the feeding pipe is 150°C. Stop feeding after adding 300kg of titanium tetrachloride, and continue feeding according to the normal process after keeping the temperature at 720°C for 2 hours.

Embodiment 3

[0026] 7 ton furnace charging process

[0027] The melting temperature of the magnesium ingot is set at 800°C, and the melting constant temperature time is 8 hours. After the magnesium ingot is melted, titanium tetrachloride is added at a feeding rate of 100kg / h, and the constant temperature of the feeding pipe is 180°C. Stop feeding after adding 500kg of titanium tetrachloride, and continue feeding according to the normal process after the constant temperature of 700°C for 3 hours.

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Abstract

The invention discloses a titanium tetrachloride charging method for production of sponge titanium. The charging method of the sponge titanium is improved to reduce the influence of magnesium ingots as a raw material on the quality of the sponge titanium, particularly to completely avoid degradation of the sponge titanium caused by over-standard of the Mn and reduce the content admixture iron. The Fe content of a product is in a range of 0.01-0.02wt% and the top-grade product rate is improved. The method is simple without cost increase, easy to operate, obvious in economic benefit, and suitable for being popularized and applied in the sponge titanium industry.

Description

technical field [0001] The invention relates to the field of nonferrous metal smelting, in particular to a titanium tetrachloride feeding method for producing sponge titanium. Background technique [0002] Impurity iron has a great influence on the quality of titanium sponge. Once it enters the titanium sponge, it will cause the titanium sponge to be degraded or even become a defective product. Over the years, reducing the content of impurity iron in sponge titanium has attracted great attention in the field of metallurgy. With the continuous improvement of the sponge titanium production process, the impact of impurity content on the quality of sponge titanium products is also decreasing, but impurity iron is still the main factor affecting product quality in the production of sponge titanium. [0003] The main technical indicators of the quality standard of ferro-titanium are impurity content, Brinell hardness (HB), and particle size. The impurity elements covered by the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/12
Inventor 张金宝付永
Owner 朝阳金达钛业股份有限公司
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