Method of treating radioactive waste
Creators
- 1. Hitachi Ltd., Tokyo (Japan)
Description
Purpose: To decrease the temperature of powder produced from radioactive liquid waste and prevent reduction of the effects of a binder by evacuating a centrifugal thin film drying machine for powdering the liquid waste and employing silane coupling agent as a binder. Method: A centrifugal thin film drying machine is evacuated by a vacuum pump to a pressure less than approx. 0.14 ata. Thus, the powder is heated by the drying machine and concentracted by low temperature evaporation, and decreased at its temperature due to the revolution of the rotary blades. A silane coupling agent is mixed as a binder in the radioactive liquid waste, the binder is not fully pyrolytically decomposed to prevent the reduction of the effect of the binder, and a pellet having large coupling strength can be formed from the powder thus produced. (Yoshihara, H.)
Availability note (English)
Available from JAPATIC. Also available from INPADOC.Additional details
Publishing Information
- Imprint Pagination
- 6 p.
- IPC:
- Int. Cl. G21F9/14; G21F9/08.
- IPC
- Int. Cl. G21F9/14; G21F9/08.
- Patent number
- JP patent document 56-98698/A/
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 14772973
- Subject category
- S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- BWR TYPE REACTORS; DRYING; EVAPORATORS; LIQUID WASTES; POWDERS; RADIOACTIVE WASTE PROCESSING; RADIOACTIVE WASTES; SILANES; SODIUM SULFATES; VACUUM SYSTEMS
- Descriptors DEC
- ALKALI METAL COMPOUNDS; HYDRIDES; HYDROGEN COMPOUNDS; MANAGEMENT; MATERIALS; OXYGEN COMPOUNDS; RADIOACTIVE MATERIALS; REACTORS; SILICON COMPOUNDS; SODIUM COMPOUNDS; SULFATES; SULFUR COMPOUNDS; WASTE MANAGEMENT; WASTE PROCESSING; WASTES; WATER COOLED REACTORS; WATER MODERATED REACTORS