Method and device for regenerating foundry sand
AssigneeKLEIN Anlagenbau AG
InventorsBernd Federhen, Markus Jendrock, Enno Schulte
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Abstract
A method for regenerating foundry sand, in particular for the renewed production of foundry molds and/or foundry mold cores from the regenerated foundry sand, through removal of binding agent, from a foundry sand/binding agent mixture, using a solid support means (6), wherein binding agent and support means (6) are separated from the foundry sand, wherein support means (6) is brought into contact with the foundry sand/binding agent mixture, is preferably added to it, and, together with the binding agent, which adheres thereto and/or which is incorporated therein, is separated from the foundry sand (10).
Claims11
A method for regenerating foundry sand, for the renewed production of foundry molds and/or foundry mold cores from the regenerated foundry sand, through removal of binding agent, from a foundry sand/binding agent mixture, using a solid support means (6), wherein binding agent and support means (6) are separated from the foundry sand, wherein the support means (6) is brought into contact with the foundry sand/binding agent mixture as bulk material and is mixed therewith,
- wherein
- the solid support means is absorbent and/or adsorbent,
- wherein
- adhesion promotor (5) for improving the transport of the binding agent to the support means (6) and/or for improving the adhesion of the binding agent to and/or the incorporation of the binding agent in the support means (6) is added to the foundry sand/binding agent mixture,
- wherein
- the adhesion promoter (5) comprises or is a liquid, or is at least temporarily in liquid form by means of melting, with the simultaneous presence of the support means (6), and
- wherein
- the support means (6) together with the binding agent, which adheres thereto and/or which is incorporated therein, is separated from the foundry sand (10).
Dependencies are inferred from the claim text.