ApplicationNo. 714651 filed on 06/13/1991
US Classes:134/25.1, Work handled in bulk or groups134/10, Including regeneration, purification, recovery or separation of agent used134/26, Using sequentially applied treating agents134/40, Oils, grease, tar, or wax removal, by dissolving134/42Miscellaneous
ExaminersPrimary: Morris, Theodore
Assistant: El-Arini, Zeinab
Attorney, Agent or Firm
International ClassesB08B 003/00
AbstractThis invention relates to methods and apparatus for cleansing oil-contaminated particulate materials. The invention is particularly applicable to the treatment of oil well drill sites and to methods and means for continuously cleansing drill cuttings found in used drilling muds. An initial step involves the use of an inclined tub equipped with an inclined spiral conveyor for continuous stripping of the oil and other contaminants from the drill cuttings, and a second step involves the use of a similar inclined tub and inclined spiral conveyor for continuous hot rinse water treatment of the stripped cuttings. An optional ambient or cold water final rinsing step is also disclosed.