JPS56148439A - Regenerating method for recovered molding sand - Google Patents

Regenerating method for recovered molding sand

Info

Publication number
JPS56148439A
JPS56148439A JP4640880A JP4640880A JPS56148439A JP S56148439 A JPS56148439 A JP S56148439A JP 4640880 A JP4640880 A JP 4640880A JP 4640880 A JP4640880 A JP 4640880A JP S56148439 A JPS56148439 A JP S56148439A
Authority
JP
Japan
Prior art keywords
sand
molding sand
old
mold
roasting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4640880A
Other languages
Japanese (ja)
Inventor
Tadaharu Asano
Hironori Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Yukizai Corp
Original Assignee
Asahi Organic Chemicals Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asahi Organic Chemicals Industry Co Ltd filed Critical Asahi Organic Chemicals Industry Co Ltd
Priority to JP4640880A priority Critical patent/JPS56148439A/en
Publication of JPS56148439A publication Critical patent/JPS56148439A/en
Pending legal-status Critical Current

Links

Landscapes

  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

PURPOSE: To recover the old sand from a used mold reusable as molding sand by beforehand grinding said old sand then roasting the same.
CONSTITUTION: The old mold sand knocked out after casting molten metal in a mold is dried in a rotary kiln, whereby the water contained therein is removed. This is ground with a grinder to remove the inorg. binder melt-stuck and sintered on the surfaces, after which it is charged into a fluidized roasting furnace or the likke, where it is rotated to 800°C, and in succession to this, it undergoes cooling and classifying process, whereby it is recovered in such a manner as to be reusable as molding sand. The molding sand is regenerated from the old sand by the grinding and roasting treatments at high yields of 71W72%.
COPYRIGHT: (C)1981,JPO&Japio
JP4640880A 1980-04-09 1980-04-09 Regenerating method for recovered molding sand Pending JPS56148439A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4640880A JPS56148439A (en) 1980-04-09 1980-04-09 Regenerating method for recovered molding sand

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4640880A JPS56148439A (en) 1980-04-09 1980-04-09 Regenerating method for recovered molding sand

Publications (1)

Publication Number Publication Date
JPS56148439A true JPS56148439A (en) 1981-11-17

Family

ID=12746316

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4640880A Pending JPS56148439A (en) 1980-04-09 1980-04-09 Regenerating method for recovered molding sand

Country Status (1)

Country Link
JP (1) JPS56148439A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006247699A (en) * 2005-03-10 2006-09-21 Kao Corp Method for making molding sand
JP2020104125A (en) * 2018-12-26 2020-07-09 伊藤忠セラテック株式会社 Reclamation sand regeneration process

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5383927A (en) * 1976-12-29 1978-07-24 Horie Shizuo Method of regenerating used foundry sand

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5383927A (en) * 1976-12-29 1978-07-24 Horie Shizuo Method of regenerating used foundry sand

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006247699A (en) * 2005-03-10 2006-09-21 Kao Corp Method for making molding sand
JP2020104125A (en) * 2018-12-26 2020-07-09 伊藤忠セラテック株式会社 Reclamation sand regeneration process

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