Cleaning and liquid contact with solids – Processes – Oils – grease – tar – or wax removal – by dissolving
Patent
1995-09-12
1997-06-03
Le, Long V.
Cleaning and liquid contact with solids
Processes
Oils, grease, tar, or wax removal, by dissolving
134 30, 134 32, 134 33, 134 42, 210772, 210781, C23G 128
Patent
active
056349858
ABSTRACT:
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 subsequent 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 viscosity <5 cP at 25.degree. C. and a flashpoint <100.degree. C. Preferably it is used oils having a viscosity <2.5 cP and a flash point between 30.degree. and 75.degree. C. It is preferred to use dearomatized oil.
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Le Long V.
Norsk Hydro a.s
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