Process for the preparation of polyaluminum compounds
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 26, 1993
Grant Date -
N/A
app pub date -
Feb 13, 1990
filing date -
Feb 13, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to a process for the preparation of polyaluminum hydroxychloride complexes having the general formula Al(OH).sub.x Cl.sub.y in solution or in solid form and intended to be used as flocculants and coagulants for water purification, sludge dewatering, plant dewatering and paper production, whereby one reacts aluminum chloride in solution with aluminum hydroxide, or aluminumoxide hydrates at a temperature of 120.degree.-170.degree. C. at an elevated pressure for 1.5-5 hrs, whereby the relationship AlCl.sub.3 :Al(OH).sub.3 is thus adjusted that the relationship OH:Al in the renewing compound Al(OH).sub.x Cl.sub.y becomes 0.5 to 1.5, preferably 0.8 to 1.2.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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