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.:
Date of Patent:
Jul. 22, 2014
Filed:
May. 27, 2010
Xiaomei Feng, Haidian District, CN;
Jin LI, Shifang, CN;
Dong LI, Haidian District, CN;
Guangming LI, Shifang, CN;
Zhenmin Zhang, Haidian District, CN;
Jiacai Wang, Shifang, CN;
Jian Zou, Shifang, CN;
Yongqiang MA, Shifang, CN;
Jun Hou, Shifang, CN;
Xiaomei Feng, Haidian District, CN;
Jin Li, Shifang, CN;
Dong Li, Haidian District, CN;
Guangming Li, Shifang, CN;
Zhenmin Zhang, Haidian District, CN;
Jiacai Wang, Shifang, CN;
Jian Zou, Shifang, CN;
Yongqiang Ma, Shifang, CN;
Jun Hou, Shifang, CN;
China Enfi Engineering Corp., Haidian District, Beijing, CN;
Sichuan Chuanheng Chemical Corporation, Shifang, Sichuan, CN;
Abstract
The present invention discloses an apparatus for thermally refining phosphorus. The apparatus comprises: a melting furnace for melting rock phosphate into melts, including a feed port and a melt outlet; and a reduction-oxidation furnace including a furnace body which gas a melt inlet, a slag outlet, and a fume outlet, and a blow gun, wherein the melt inlet and the melt outlet are in communication with each other and wherein the blow gun has an end inserted into the furnace body. The content of impurities in fumes containing phosphorus pentaoxide is low, and the phosphorus pentaoxide can be easily extracted with a high purity of the phosphorus pentaoxide and at low cost by means of the apparatus for thermally refining phosphorus according to the present invention.