Method of removing suspended solids from phosphoric acid
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 3, 1986
Issued Date -
N/A
app pub date -
Sep 6, 1984
filing date -
Aug 25, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for removing impurities from phosphoric acid, especially concentrated wet process phosphoric acid, comprises filtering phosphoric acid through a filter cake (e.g., diatomite) on a porous member at a temperature in the range of about 57.degree. C. to about 77.degree. C. The filter cake retains some phosphate values. A major portion of the phosphate values retained by the filter cake can be introduced into the phosphoric acid manufacturing process, as by slurrying the filter cake in water, separating the aqueous phase from the solid phase, and introducing the aqueous phase to a wet process phosphoric acid process (e.g., as a 'gypsum' filter wash).
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully