Process for the calcination of filter cakes with high solids contents being partly pre-dried in a directly heated rotary kiln
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United States of America Patent
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Dec 29, 1992
Grant Date -
N/A
app pub date -
Jun 18, 1990
filing date -
Jun 29, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for calcining a filter cake in a directly heated rotary kiln wherein part of the filter cake is separated from the entire mass of filter cake, the separated portion is predried and recombined with the remainder portion and the combined predried and remainder portion is calcined. The filter cake can be inorganic solids such as oxides of titanium, chromium (III), zinc and iron.
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