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:
Apr. 05, 2005
Filed:
Apr. 20, 2001
Kanji Nakamura, Iwata, JP;
Yasuyuki Yamada, Iwata, JP;
Tetsuo Suzuki, Iwata, JP;
Katsuhiro Suzuki, Iwata, JP;
Kanji Nakamura, Iwata, JP;
Yasuyuki Yamada, Iwata, JP;
Tetsuo Suzuki, Iwata, JP;
Katsuhiro Suzuki, Iwata, JP;
NTN Corporation, Osaka, JP;
Abstract
A method of and an apparatus for compressing the grinding sludge, which is effective to compress the grinding sludge to provide an intended rigid briquette even though the grinding sludge contains ground chips of hardened iron and/or steel materials and an oil-based coolant and also to facilitate reuse of the briquette (B) as material for production of steel. The grinding sludge containing the oil-based coolant and hardened component parts such as steel component parts that are used in bearings is compressed. To this end, the grinding sludge produced from a grinding line () is filtered by a filtering unit () to provide a concentrated sludge which is subsequently compressed by squeezing by a briquetting machine () to provide the briquette (B). The briquette Bso obtained can be reused as steel material. The coolant separated from the grinding sludge during filtering and squeezing is returned to the grinding line () through recovery passages ().