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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8574526 B1

PDFFull Text
Date of Patent:
Nov. 05, 2013

Filed:

Dec. 08, 2012

Cyclic preparation method for producing titanium boride from intermediate feedstock sodium-based titanium-boron-fluorine salt mixture and producing sodium cryolite as byproduct

Applicant:

Shenzhen Sunxing Light Alloys Materials Co., Ltd, Guangdong, CN;

Inventors:

Xuemin Chen, Guangdong, CN;

Yueming Yu, Guangdong, CN;

Qingdong Ye, Guangdong, CN;

Jun Yang, Guangdong, CN;

Zhi Zhou, Guangdong, CN;

Assignee:

Shenzhen Sunxing Light Alloys Materials Co., Ltd., Shenzhen, CN;

Attorney:

Jackson IPG PLLC

Primary Examiner:

Guinever Gregorio

Int. Cl.
CPC ...
C01B 9/08 (2006.01); C01F 3/00 (2006.01); C01F 7/00 (2006.01); C01B 35/04 (2006.01); B22F 1/00 (2006.01); B22F 9/00 (2006.01); C01B 35/00 (2006.01); C01B 25/08 (2006.01);
U.S. Cl.
CPC ...
Abstract

A cyclic preparation method for producing titanium boride from intermediate feedstock sodium-based titanium-boron-fluorine salt mixture and producing sodium cryolite as byproduct, which comprises the steps: a) boric acid or boric anhydride is added with hydrofluoric acid and then with sodium carbonate solution for concentration and crystallization to generate sodium fluoborate; titanium-iron concentrate is added with hydrofluoric acid and then with sodium carbonate and sodium hydroxide to obtain sodium fluotitanate; B) the sodium fluoborate is mixed with the sodium fluotitanate, and the mixture reacts with aluminum to generate titanium boride and sodium cryolite; C) the sodium cryolite is sucked out and then fed into a rotary reaction kettle together with concentrated sulfuric acid, hydrogen fluoride gas as well as sodium sulfate and sodium aluminum sulfate are generated by reaction in the rotary reaction kettle, and the hydrogen fluoride gas is collected and then dissolved in water to obtain hydrofluoric acid aqueous solution; and D) the obtained hydrofluoric acid aqueous solution is recycled.

Find Patent Forward Citations

Chen, Xuemin. (2013). Cyclic preparation method for producing titanium boride from intermediate feedstock sodium-based titanium-boron-fluorine salt mixture and producing sodium cryolite as byproduct (U.S. Patent No. 8574526). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8574526

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