C - Chemistry – Metallurgy – 23 – G
Patent
C - Chemistry, Metallurgy
23
G
18/500.1
C23G 5/024 (2006.01) B22F 9/08 (2006.01) C22B 1/00 (2006.01) C22B 26/12 (2006.01) C22B 26/22 (2006.01)
Patent
CA 2158226
The invention concerns a method for control of the properties of the remaining oil layer on magnesium or magnesium alloy particles and/ or other reactive metal particles produced from molten metal. The particles are cooled in a cooling oil with subse- quent centrifuging and heating to remove remaining oil. A part of the oil layer on the particles is replaced with a lighter oil, preferably during centrifuging. The oil can be supplied as a spray. The light oil is supplied in an amount of 0.5-10 weight %. The light oil used should have a vis- cosity < 5 cP at 25°C and a flashpoint < 100°C. Preferably it is used oils having a viscosity < 2.5 cP and a flash point between 30 and 75°C. It is preferred to use dearomatized oil.
Fetherstonhaugh & Co.
Norsk Hydro A.s
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