METHOD AND DEVICE FOR CASE-HARDENING LIQUID RADIOACTIVE WASTE CONTAINING MINERAL OILS AND/OR ORGANIC LIQUIDS Russian patent published in 2008 - IPC G21F9/16 

FIELD: environment protection; recovery of liquid radioactive waste.

SUBSTANCE: proposed method is used for recovering liquid radioactive waste containing mineral oils and/or organic liquids immiscible in water by case-hardening them and includes their intensive pre-stirring to prepare slurry of liquid wastes incorporating mineral oils and/or organic liquids in amount of 10-15% of final compound mass, 10-30% of cement material mass capable of sorbing oil and/or organic materials, and liquid radioactive waste in the form of aqueous salt solutions taken in water/cement proportion W/C = 0.5-0.9; slurry obtained is mixed up with remaining mass of cement material capable of sorbing oil and/or organic liquid. Device for case-hardening liquid radioactive waste has primary slurry preparation unit that has disperser accommodating swirling flanges and connected via pipeline to preparation tank which is provided with strain gage, pipe connection for feeding liquid radioactive waste containing mineral oils and/or organic liquids, pipe connection for feeding radioactive waste in the form of aqueous salt solutions, and is coupled with supporting-frame mounted cement bin through cement feeding auger; preparation tank communicates through pipeline with mixer provided with primary slurry intake pipe connection.

EFFECT: ability of joint case-hardening of liquid radioactive waste containing mineral oils and/or organic liquids and those in the form of aqueous salt solutions; enhanced strength of prepared cement compound.

2 cl, 2 dwg