CEMENTING METHOD OF WASTE RADIOACTIVE OILS Russian patent published in 2011 - IPC G21F9/20 

FIELD: power industry.

SUBSTANCE: cementing method of used oils consists in obtaining of cement compound by mixing the oil-containing wastes with cement material. Used oil in quantity of about 20% of the weight of the end compound is pre-bound by means of absorbing material. As absorbing material there used is fly ash of TPP or magnesium oxide, which are taken in "oil:absorbent" weight ratio of 0.5 to 0.7 and 1 to 4. There separately prepared is cement grout by adding the water or low-salt liquid radioactive wastes at cement grout ratio of 0.3 to 0.6 cm³/g of dry mixture containing Portland cement, sorption and plastisising additives, and grout is exposed for some time. Then, oil mixed with absorbent is introduced to it.

EFFECT: invention allows obtaining the compound meeting the normative requirements as to compressive strength, cold resistance, water resistance, which are characterised by absence of oil separation and acceptable setting periods, and high fire- and heat resistance.

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