Process and apparatus for the recovery of metal oxide particles

Details Process and apparatus for the recovery of metal oxide particles Process and apparatus for the recovery of metal oxide particles

2005-09-20

2005-09-20

Caldarola, Glenn (Department: 1764)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including heat exchanger for reaction chamber or reactants...

C422S139000, C422S140000, C422S141000, C422S142000, C422S146000, C422S173000, C422S182000, C423S488000, C095S234000, C095S223000, C095S224000, C095S225000

Reexamination Certificate

active

06946105

ABSTRACT:
A process for the recovery of metal oxides from a solution containing metallic salts by spray roasting of these solutions. The process is particularly suitable for spray roasting spent pickling acids. The process feeds the solution to a reactor for spray roasting of the droplets in at least two stages, where at least one evaporation stage follows at least one conversion stage to convert the metal salts to metal oxides. The device for implementing the process includes a spray roasting reactor having a first heating zone to evaporate the water and a second heating zone to convert the metal salts to oxides.

REFERENCES:
patent: 3275062 (1966-09-01), Williams
patent: 5149515 (1992-09-01), Karner et al.
patent: 5939041 (1999-08-01), Lebl
patent: 5980850 (1999-11-01), Lebl
patent: 6214310 (2001-04-01), Lebl
patent: 6451280 (2002-09-01), Lebl
Abstract DE 10006990 A1 Sep. 28, 2000.
Abstract WO 96/27554 Sep. 12, 1996.

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