| 摘要 |
The invention relates to a process for regenerating used foundry sand, whose original molding sand contained, as the molding material, inorganic binders such as, for example and especially, bentonite ("inorganic used sand") and/or organic binders such as, for example and especially, phenolic resins and/or furan resins ("organic used sand"), wherein the used sand to be reconditioned is impregnated with water and then transferred in the moist state into a heated fluidized bed.
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