Fluidized bed combustion of aluminum smelting waste

Details Fluidized bed combustion of aluminum smelting waste Fluidized bed combustion of aluminum smelting waste

1989-05-01

1991-02-19

Favors, Edward G.

Furnaces

Process

Incinerating refuse

110232, 110245, 110347, F23G 500, F23G 700

Patent

active

049933230

ABSTRACT:
An environmentally acceptable and effective method for thermal destruction of Spent Potliner (SPL) by Fluidized Bed Combustion (FBC) has been established. This method has overcome problems associated with ash agglomeration, ash leachate character and emission control, the primary obstacles for applying FBC to the disposal of SPL and like solid fuels. Specifically, "recipes" of appropriate additives (fuel blends) are proposed. A mixture of lignite, limestone and SPL in an appropriate proportion has proven to notably increase the agglomeration temperature of the ash, allowing this low-melting waste to be destroyed continuously by FBC. Ash leachate character is modified by control of ash chemistry to ensure that fluoride anions and metallic cations are at or below acceptable limits.

REFERENCES:
patent: 4763585 (1988-08-01), Rickman et al.

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