公开(公告)号：EP0542404B1

公开(公告)日：1996-01-24

申请号：EP92306290.5

申请日：1992-07-09

Applicant: REYNOLDS METALS COMPANY

Inventor： Banker, Donald B. ,  Brooks, Dennis G. ,  Cutshall, Euel R. ,  Macauley, Douglas D. ,  Strahan, Dennis F.

IPC: A62D3/00

CPC classification number: A62D3/38 ,  A62D3/33 ,  A62D2101/45 ,  A62D2101/49 ,  A62D2203/04 ,  A62D2203/10 ,  C01F11/22

公开(公告)号：EP0542404A1

公开(公告)日：1993-05-19

申请号：EP92306290.5

申请日：1992-07-09

Applicant: REYNOLDS METALS COMPANY

Inventor： Banker, Donald B. ,  Brooks, Dennis G. ,  Cutshall, Euel R. ,  Macauley, Douglas D. ,  Strahan, Dennis F.

IPC: A62D3/00

CPC classification number: A62D3/38 ,  A62D3/33 ,  A62D2101/45 ,  A62D2101/49 ,  A62D2203/04 ,  A62D2203/10 ,  C01F11/22

Abstract: A method is disclosed for detoxification of aluminum spent potliner by thermal treatment in a rotary kiln while blended with limestone and metal silicates to destroy cyanides and convert the soluble fluoride salts to relatively insoluble calcium fluoride and fluoride-bearing minerals, quenching the hot kiln discharge with an aqueous lime slurry to convert residual soluble fluoride salts on the particle surfaces to an insoluble form, and treating aqueous landfill runoff and capture with lime or limestone and recycling the treated water to the process. The treated material is suitable for landfilling in a non-hazardous waste landfill or marketing as a raw material. Air emissions are innocuous and there is no aqueous discharge.

Abstract translation: 公开了一种通过在回转窑中热处理的铝废料的解毒方法，同时与石灰石和金属硅酸盐混合以破坏氰化物并将可溶性氟化物盐转化为相对不溶的氟化钙和含氟化物的矿物，将热窑排放物淬火 将颗粒表面上残留的可溶性氟化物盐转化为不溶形式的水性石灰浆，以及用石灰或石灰石捕集水中的填埋物径流，并将处理过的水再循环到该过程中。 经处理的材料适用于以非危险废物填埋场或营销为原料填埋。 空气排放无害，无排水。