A Method of Extracting Mineral Oils from Depleted Soils,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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The patent presents a method of extracting mineral oils from depleted soil which is distinguished in that in order to facilitate a more complete recovery of oil, the soil is treated with a soda solution subsequent pressing at 200-500 kgsq cm pressure and a passage of a current of 50-100 Hz.
- Industrial Chemistry and Chemical Processing
- Lubricants and Hydraulic Fluids