公开(公告)号：US20180280990A1

公开(公告)日：2018-10-04

申请号：US15766453

申请日：2016-08-03

Applicant: SINTOKOGIO, LTD.

Inventor： Takahumi OBA ,  Junichi IWASAKI ,  Kazuya ABE ,  Tatsuyuki AOKI

IPC: B02C23/14 ,  B03C1/14 ,  B03C1/18 ,  B03C1/22 ,  B22C5/06 ,  B22C5/10 ,  B02C15/04 ,  B02C25/00 ,  B07B4/08 ,  B07B9/00

Abstract: A molding sand reclamation method and reclamation system effectively separates magnetically attracted matter from molding sand. The molding sand reclamation method includes removing metal powder and metal pieces by magnetic separation with a first magnetic flux density and removing magnetically attracted matter by magnetic separation with a second magnetic flux density higher than the first magnetic flux density from molding sand separated from a casting by shot blasting, and removing by dry mechanical reclamation, from the molding sand, substances including carbonized matter adhered to the surface of the molding sand.

公开(公告)号：US20180133719A1

公开(公告)日：2018-05-17

申请号：US15577508

申请日：2016-04-18

Applicant: SINTOKOGIO, LTD.

Inventor： Takahumi OBA ,  Junichi IWASAKI ,  Kazuya ABE ,  Tatsuyuki AOKI

IPC: B02C23/14 ,  B22C5/06 ,  B02C15/04 ,  B02C15/06 ,  B02C23/18 ,  B03C1/26 ,  B02C25/00 ,  B02C23/02 ,  B02C21/00

CPC classification number: B02C23/14 ,  B02C15/04 ,  B02C15/06 ,  B02C21/00 ,  B02C23/02 ,  B02C23/18 ,  B02C25/00 ,  B03C1/0332 ,  B03C1/14 ,  B03C1/26 ,  B03C1/30 ,  B03C2201/20 ,  B03C2201/24 ,  B22C5/02 ,  B22C5/0404 ,  B22C5/06 ,  B22C5/08 ,  B22C5/10 ,  B22C5/16 ,  B22C5/18 ,  B22C9/02

Abstract: A method includes measuring a water content and a magnetized matter content of molding sand discharged from green sand casting equipment; comparing the measured water content with a first control value, and if the water content exceeds the first control value, drying the molding sand until the water content becomes equal to or less than the first control value; comparing the measured magnetized matter content with a second control value, and if the magnetized matter content exceeds the second control value, magnetically separating the molding sand until the magnetized matter content becomes equal to or less than the second control value; thereafter, reclaiming the molding sand by dry mechanical reclamation until a loss-on-ignition becomes equal to or less than a third control value; and classifying the molding sand until a total clay content becomes equal to or less than a fourth control value.