SE9001214A - - Google Patents

Info

Publication number
SE9001214A
SE9001214A SE9001214A SE9001214A SE9001214A SE 9001214 A SE9001214 A SE 9001214A SE 9001214 A SE9001214 A SE 9001214A SE 9001214 A SE9001214 A SE 9001214A SE 9001214 A SE9001214 A SE 9001214A
Authority
SE
Sweden
Prior art keywords
sand
movement speed
thermal treatment
grain movement
cycles
Prior art date
Application number
SE9001214A
Other versions
SE9001214D0 (en
SE468307B (en
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 filed Critical
Publication of SE9001214D0 publication Critical patent/SE9001214D0/en
Publication of SE9001214A publication Critical patent/SE9001214A/xx
Publication of SE468307B publication Critical patent/SE468307B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/18—Plants for preparing mould materials
    • B22C5/185—Plants for preparing mould materials comprising a wet reclamation step

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Mold Materials And Core Materials (AREA)

Abstract

To recover used sand from a casting assembly, for further use, the thermal treatment for the sand grains is applied at 310-900 deg. C. The sand grains are classified and worked mechanically in cycles with a grain movement speed of 5-50 m/s. At least one of the cycles is in a watery medium, with a sand grain movement speed of 5-7 m/s. The sand grains are given a mechanical handling action in a watery medium after a thermal treatment at 310-490 deg. C. A mechanical action can be applied before and after the thermal treatment at 700-900 deg. C, using a watery medium before the heat treatment, and an air medium after the heat treatment at a grain movement speed of 30-50 m/s. ADVANTAGE - The method increases the quality of regenerated sand and reduces energy consumption and extends the life of sand used for hot box casting. It also reduces the losses of fresh sand, bentonite and carbon to save natural resources and transport while protecting the environment.
SE9001214A 1990-03-30 1990-04-03 PROCEDURE AND SYSTEM FOR SANDATE RECOVERY FROM FORMSAND MIXTURES ALREADY USED SE468307B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19904010377 DE4010377A1 (en) 1990-03-30 1990-03-30 Moulding sand recovery improving quality of sand - using thermal treatment and mechanical action to recycle sand with reduced energy consumption

Publications (3)

Publication Number Publication Date
SE9001214D0 SE9001214D0 (en) 1990-04-03
SE9001214A true SE9001214A (en) 1991-10-04
SE468307B SE468307B (en) 1992-12-14

Family

ID=6403471

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9001214A SE468307B (en) 1990-03-30 1990-04-03 PROCEDURE AND SYSTEM FOR SANDATE RECOVERY FROM FORMSAND MIXTURES ALREADY USED

Country Status (3)

Country Link
JP (1) JPH0413438A (en)
DE (1) DE4010377A1 (en)
SE (1) SE468307B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4129863A1 (en) * 1991-09-07 1993-03-11 Hanf Carl Elino Ind Ofenbau Bentonite bound foundry moulding sand conditioning process - by heat treatment of precleaned sand for high quality sand useful for core prodn.
DE10030675A1 (en) * 2000-06-23 2002-01-03 Eirich Maschf Gustav Method and device for processing molding sand
US6554049B2 (en) 2001-05-15 2003-04-29 Foundry Advanced Clay Technologies, L.L.C. Process for recovering sand and bentonite clay used in a foundry
JP5297731B2 (en) * 2007-09-12 2013-09-25 花王株式会社 Recycled casting sand manufacturing method
JP2009241149A (en) * 2008-02-26 2009-10-22 Sintokogio Ltd Treatment method and treatment system of molding sand
FR3023194B1 (en) * 2014-07-04 2019-12-13 Psa Automobiles Sa. FOUNDRY SAND RECYCLING DEVICE
JP2020185608A (en) * 2019-05-17 2020-11-19 伊藤忠セラテック株式会社 Method of regenerating foundry sand

Also Published As

Publication number Publication date
DE4010377A1 (en) 1991-10-02
SE9001214D0 (en) 1990-04-03
SE468307B (en) 1992-12-14
JPH0413438A (en) 1992-01-17

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