The article presents the results of investigations, which make a fragment of the broad-scale studies carried out as a part of the statutory activity on optimising the foundry sand technology using new, modified, inorganic binders. The results of investigations regarding the effect of multiple reclamation on the technological properties of foundry sands with inorganic binders were presented in a concise manner. The reclaim sand were introduced to moulding sands prepared with the new, modified, inorganic binders bonded by the chemical reaction or by blowing with gaseous CO2. Attention was focussed on the effect of multiple reclamation on the residual strength and bench life properties of moulding sands prepared with the new types of inorganic binders.
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