公开(公告)号：US20200381133A1

公开(公告)日：2020-12-03

申请号：US16854817

申请日：2020-04-21

Applicant: Southwest University of Science and Technology

Inventor： Jichuan HUO ,  Yonglin HUO ,  Xingquan ZHANG ,  Xiang JI ,  Qihui LIAN

IPC: G21F9/30 ,  C03B5/00

Abstract: Disclosed herein is a method for preparing a matrix for vitrifying radioactive waste, including: grinding natural magmatic rocks; and melting the ground product at 1450-1500° C. for 3-4.5 h followed by moulding and annealing to produce the matrix. The matrix includes 45%-65% by weight of SiO2, 9%-18% by weight of Al2O3, 4%-12% by weight of CaO, 3%-10% by weight of MgO, 6%-16% by weight of Fe2O3+FeO, 2%-9% by weight of Na2O+K2O and 1%-5% by weight of TiO2. The matrix is doped with simulated radioactive waste, ground, melted, moulded and annealed to obtain a glass wasteform with good chemical and thermal stability.