公开(公告)号：US06084146A

公开(公告)日：2000-07-04

申请号：US713243

申请日：1996-09-12

Applicant: Aaron Barkatt ,  Ewa Labuda ,  Marta Gmurczyk ,  Donna M. Wilder

Inventor： Aaron Barkatt ,  Ewa Labuda ,  Marta Gmurczyk ,  Donna M. Wilder

IPC: G21F9/06 ,  G21F9/10 ,  G21F9/30 ,  G21F9/00

CPC classification number: G21F9/302 ,  G21F9/06 ,  G21F9/10

Abstract: Processes for immobilizing solid contaminated materials, such as radioactive species, hazardous species, or combinations of both radioactive and hazardous species, comprise mixing the contaminated materials with hydrated ferric oxides, and then pressing the mixture at a temperature of at least about 150.degree. C. and gradually removing a large part of the water while under pressure to produce a solid composition. The water content of the mixture is adjusted if necessary. Contaminated materials dissolved or suspended in an aqueous solution can be immobilized by precipitating hydrated ferric oxide in the solution, and adjusting the water content and pressing, as above. In another process in accordance with the present invention, hydrated ferric oxides are deposited on metal surfaces. The deposited ferric oxide is pressed to produce a solid coating adhered to the surface, to retard corrosion. A ceramic body of ferric oxide composition may also be made in accordance with the present invention.

Abstract translation: 用于固定固体污染物质（例如放射性物质，危险物质或放射性和危险物质的组合）的方法包括将污染物质与水合氧化铁混合，然后在至少约150℃的温度下压制该混合物。 并在压力下逐渐除去大部分水以产生固体组合物。 必要时调整混合物的含水量。 溶解或悬浮在水溶液中的污染物质可以如上所述通过在溶液中沉淀水合氧化铁并调节含水量和压制来固定。 在根据本发明的另一方法中，水合氧化铁沉积在金属表面上。 压制沉积的氧化铁以产生粘附到表面的固体涂层，以延缓腐蚀。 也可以根据本发明制造氧化铁组合物的陶瓷体。