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Abstract

The investigation results of the mechanical reclamation of spent moulding sands from the Cordis technology are presented in the paper.

The quality assessment of the obtained reclaim and the influence of the reclaim fraction in a matrix on the core sand strength is given. The

reclaim quality assessment was performed on the basis of the determination of losses on ignition, Na2O content on reclaim grains and pH

values. The reclaim constituted 100%, 75% and 50% of the core sand matrix, for which the bending strength was determined. The matrix

reclamation treatment was performed in the experimental rotor reclaimer RD-6. Spent sands were applied in as-delivered condition and

after the heating to a temperature of 140 o

C. Shaped samples for strength tests were made by shooting and hardening of sands in the warmbox

technology.

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Authors and Affiliations

R. Dańko
J. Dańko
M. Skrzyński
M. Dereń
Ł. Zygmunt

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