METHOD OF DECOMPOSITION OF THE SPENT LUBRICATING-COOLING LIQUIDS Russian patent published in 2006 - IPC C10M175/04 C02F1/28 

FIELD: metal-working industry; metallurgy industry; other industries; methods of decomposition of the spent lubricating-cooling liquids.

SUBSTANCE: the invention is pertaining to the methods of decomposition of the spent lubricating-cooling liquids and may be used at the enterprises of metal-working, metallurgical and other industries for treatment of the spent lubricating-cooling liquids (LCL) and purification of the industrial waste waters containing the low-dispersion colloidal organic and mineral impurities. The method provides, that the solid sorbent in amount of 0.4-0.5t/m³ is introduced in the LCL, separate the water phase, freeze it till the temperature of minus 3°C - minus 5°C with the following thaw out up to temperature 0°C - plus 5°C with simultaneous removal of the remaining content of the organic phase. The technical result of the invention is simplification of the method, reduction of the process cost, improvement of the ecology of the production.

EFFECT: invention ensures simplification of the method, reduction of the process cost, improvement of the ecology of the production.