METHOD AND EQUIPMENT FOR GRANULATION OF RADIOACTIVE WASTE

摘要

A method and equipment for granulation of radioactive wastes are provided to in-situ polymerization without mechanical mixing by making dry powder of a boric acid-containing radioactive concentrated wastewater in a stable granule shape. Equipment for granulation of radioactive wastes comprise a storage tank(12) for a granular agent, a mixing vessel(8), a middle store tank(1) for a granular agent, a nozzle part(4) injecting granular agent, a mixing rod(5), a side knife(6), a mixing vessel heating unit(9), a granulate discharging unit, and a cylinder unit(10). The storage tank stores liquid sodium silicate which is a granular agent and is operated by pneumatic pressure. The mixing vessel mixes radioactive wastes with rotating at low speed. The middle store tank uniformly injects liquid sodium silicate within the mixing vessel. The pouring nozzle part is installed at the upper part of the mixing vessel and sprays the liquid sodium silicate to the mixing vessel.