Oil removal from emulsions - of oil-in-water type by adding demulsifier and calcium carbonate absorbent

摘要

Emulsion is mixed with demulsifier, to break emulsion, and oil adsorbent, consisting (partly) of CaC03, then absorbent with absorbed oil is separated. This provides simple method of obtaining waste liquor with satisfactory purity from spent emulsions used in metal machining operations, e.g. drilling, cutting, turning etc.