C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
39/112, 53/358
C22B 61/00 (2006.01)
Patent
CA 1165127
81-124 METHOD AND INSTALLATION FOR TREATMENT OF WASTE METAL AND LIQUID DROSS ABSTRACT OF THE DISCLOSURE In a method for treating liquid dross wherein the dross is situated in a skimming trough and charged into a rotating, sub- stantially horizontal cooling pipe through which it passes so that the dross is cooled to a temperature below the melting point thereof to obtain a granulated form, the dross is charged from the skimming tank into the cooling pipe and passed therethrough substantially in the absence of air or oxygen whereupon the cooled granulated dross is subjected to an autogenous grinding process, the ground dross then being separated into a granulated metal fraction and a fine-grained fraction. According to the apparatus of the inven- tion, a hood is located over the inlet side of the cooling pipe so that the entrance of air into the pipe is substantially prevented. The skimming trough is sealingly engaged to the hood so that the dross is charged from the skimming trough into the cooling pipe Without any substantial contact with the air.
371044
Swabey Ogilvy Renault
Waagner-Biro Aktiengesellschaft
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