Compositions: ceramic – Ceramic compositions – Composed of waste material
Patent
1991-04-25
1992-06-09
Dixon, Jr., William R.
Compositions: ceramic
Ceramic compositions
Composed of waste material
106439, 106449, C04B 1806, C04B 1830, C04B 2002
Patent
active
051206900
ABSTRACT:
For a complete utilization of used DeNOx catalysts contaminated with fly ash, the catalyst is crushed to a particle size of usually less than 500 microns, admixed with the ash of a molten ash firing chamber of a coal power plant at weight ratio of usually at least 9 parts molten ash to 1 part catalyst where the catalyst is dissolved in the molten ash at a temperature generally above 1460.degree. C. The resulting molten ash chamber granulated material can be utilized in the usual way, for example in the construction industry, since no pollutants, especially no compounds of tungsten, molybdenum, vanadium and arsenic are eluted into the environment.
REFERENCES:
patent: 2414734 (1943-09-01), Gelbman
patent: 2576565 (1951-11-01), Brown
patent: 4272293 (1981-06-01), Hooykaas
patent: 4764216 (1988-08-01), Hooykaas
patent: 4764276 (1988-08-01), Berry et al.
patent: 4915039 (1990-04-01), Ringel
Jung Jurgen
Kretschmer Helmut
Muller Rolf
Dixon Jr. William R.
Huels Aktiengesellschaft
Schull Lisa M.
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