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:
Dec. 25, 2012
Filed:
Nov. 29, 2011
Yong Jae Suh, Daejeon, KR;
Myung Eun Ju, Daejeon, KR;
Dae Sup Kil, Daejeon, KR;
Hee Dong Jang, Daejeon, KR;
Yong Jae Suh, Daejeon, KR;
Myung Eun Ju, Daejeon, KR;
Dae Sup Kil, Daejeon, KR;
Hee Dong Jang, Daejeon, KR;
Abstract
The present invention provides a method for preparing magnetite nanoparticles from low-grade iron ore and magnetite nanoparticles prepared by the same. According to the method of the present invention, in which iron ore leachate is obtained by adding low-grade iron ore powder to an acidic solution, Si and Mg that inhibit the formation of magnetite nanoparticles present in the leachate are selectively removed, iron hydroxide (Fe(OH)) is allowed to be precipitated from a supernatant containing Feions and Feions, a mixed iron solution containing Feions and Feions is prepared using the iron hydroxide (Fe(OH)), and the mixed iron solution is added to an alkaline solution to react, thereby preparing magnetite nanoparticles.