B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
22/190
B22C 1/00 (2006.01) B22C 5/00 (2006.01) B22C 5/18 (2006.01)
Patent
CA 2022769
A B S T R A C T The invention relates to a process for reconditioning mono or mixed foundry sand containing organic and/or inorganic binders, where the sand containing organic binder after a thermal regeneration or the sand containing inorganic binder after a thermal and mechanical regeneration is neutralized with a suitable base or acid depending on its pH-value determined after regeneration by a measuring procedure, so that it subsequently has a pH-value between 6 and 8.
Perley-Robertson Hill & Mcdougall Llp
Saz Sommer Aluminium Zug Ag
Sommer Hermann W.
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