JPS56148439A - Regenerating method for recovered molding sand - Google Patents
Regenerating method for recovered molding sandInfo
- 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
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5383927A (en) * | 1976-12-29 | 1978-07-24 | Horie Shizuo | Method of regenerating used foundry sand |
-
1980
- 1980-04-09 JP JP4640880A patent/JPS56148439A/en active Pending
Patent Citations (1)
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)
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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