METHOD FOR SEPARATION OF BY-PRODUCTS AND WASTES OF METALLURGICAL INDUSTRY AND DEVICE FOR ITS EMBODIMENT Russian patent published in 1997 - IPC

FIELD: purification of oils contaminated with mechanical impurities; separation of slimes or thickened pulps of metallurgical and metal machining works into water, oil and scale. SUBSTANCE: method includes dewatering, heating of dewatered mixture and its decantation in atmosphere inert to oil, oil vacuum distillation, vacuum drying to remove oil from solid residue at temperature not over 400 C, heating of residue after vacuum drying to temperature nit above 400 C at pressure higher than oil saturation pressure and its spraying in low-temperature chamber in stream of water steam or in stream of hot gas inert to oil, or spraying in vacuum chamber without use of spraying agent at pressure below the oil saturation. The device has, connected in succession, dehydrator, apparatus with stirrer for heating and decantation of oil, vacuum apparatus with stirrer for distillation and vacuum drying of solid residue from oil, and also the first oil accumulator connected with apparatus for heating and decantation of oil, and the second oil accumulator connected with vacuum apparatus, and inlets and outlets. The device additionally has, connected in series with vacuum apparatus, pump, high-pressure heating apparatus with stirrer, vacuum chamber with device for spraying residue and nozzles for supply of spraying agent, and settling device. EFFECT: improved quality of separation of mixture components. 2 cl, 1 dwg