Title:
METHOD OF REGENERATING CASTING SAND
Document Type and Number:
WIPO Patent Application WO/1997/026097
Kind Code:
A1
Abstract:
A method of regenerating casting sand at a low cost by efficiently burning carbon components adhering to the surface of used casting sand, etc. A pressure reducing pump is connected to one side of a combustion furnace accommodating the used casting sand to which carbon components adhere, and the other side is opened. The pump is operated so as to suck the air between the casting sand particles and to introduce fresh air. Carbon is ignited on the upstream side of the introduced air stream, and the combusting portion of the adhering matters is moved toward the downstream side so as to burn and remove the matters adhering to the casting sand. Accordingly, the adhering matters continuously undergo self-combustion without heating or stirring the sand externally. Because resin is completely burnt, the casting sand is reliably and easily regenerated at a low cost.
Inventors:
KANNO TOSHITAKE (JP)
KAWAJI TOMOHISA (JP)
KAWAJI TOMOHISA (JP)
Application Number:
PCT/JP1996/000081
Publication Date:
July 24, 1997
Filing Date:
January 19, 1996
Export Citation:
Assignee:
KIMURA CHUZOSHO CO LTD (JP)
KANNO TOSHITAKE (JP)
KAWAJI TOMOHISA (JP)
KANNO TOSHITAKE (JP)
KAWAJI TOMOHISA (JP)
International Classes:
B22C5/00; B22C5/08; F27B15/00; F27B17/00; (IPC1-7): B22C5/00
Foreign References:
| JPS6018251A | 1985-01-30 | |||
| JPS57127437A | 1982-08-07 | |||
| JPH06322450A | 1994-11-22 | |||
| JPH05293588A | 1993-11-09 |
Other References:
See also references of EP 0835704A4
Download PDF: