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:
May. 30, 1978
Filed:
Jul. 08, 1977
Tetsuo Izawa, Yokohama, JA;
Shuji Kajikawa, Zushi, JA;
Koji Satomi, Tokyo, JA;
Koichiro Nakano, Yokohama, JA;
Shinichi Kurosawa, Kawasaki, JA;
Keitaro Hirai, Yokohama, JA;
Yuichi Tsukada, Tokyo, JA;
Nippon Kokan Kabushiki Kaisha, Tokyo, JA;
Abstract
For the purpose of utilizing as a sinter raw material a rolling mill sludge with a grease deposit having a high moisture content, which is deposited in a waste water pit of a steel rolling mill, the moisture content of said rolling mill sludge is reduced to from about 1% to 10% by drying said rolling mill sludge at a temperature of from about 120.degree. C to about 200.degree. C, preferably of about 140.degree. C to about 150.degree. C, with the use of the waste heat of a sinter cooler of a sintering machine, or by mixing said rolling mill sludge with a mill scale of a low moisture content collected without the use of roll cooling water; and then, said rolling mill sludge, the moisture content of which has thus been reduced, is continuously fed, by cutting into substantially equal batches, to at least one of a sinter discharge section, an entry section of said sinter cooler, belt-conveyor for fines return provided adjacent to a hot screen, and a return hopper of said sintering machine; whereby said grease deposit is substantially completely removed through combustion or evaporation with the use of the heat of the sinter produced by said sintering machine.