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:
Sep. 02, 2003
Filed:
Jul. 12, 2001
Applicant:
Inventors:
Assignee:
Nippon Steel Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C05D 9/00 ; C05D 3/04 ;
U.S. Cl.
CPC ...
C05D 9/00 ; C05D 3/04 ;
Abstract
This invention provides a silicic fertilizer using a slag produced in a preliminary treatment of a molten pig iron and imparted with a high soluble silica content, and a production method of such a silicic fertilizer. CaO is added and oxygen is blown into a molten pig iron while adjusting a basicity (CaO/SiO ) to 3 or below, and the molten pig iron is subjected to desiliconization and dephosphorization. The resulting slag is collected to produce the silicic fertilizer. This silicic fertilizer has a basicity (CaO/SiO ) of not greater than 3 and contains 15 to 35 mass % of soluble silica.