Production of finely divided particulate siliceous material by decomposition of alkali metal silicate with sulfitic species
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 16, 1993
Grant Date -
N/A
app pub date -
Jun 10, 1992
filing date -
Jun 14, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Production of siliceous precipitates, for example sodium aluminosilicates by decomposition of an alkali metal sulfite solution with a solution of a sulfitic species such as sulfur dioxide, sulfurous acid or a salt thereof. Precipitates having excellent properties are obtained and the co-produced aqueous phase is a solution of alkali metal sulfite which has utility in pulp and paper mills. The process is advantageously carried out in proximity to a pulp and paper making operation wherein the siliceous precipitate may be used as a paper making filler and the alkali metal sulfite solution may be used in the pulping process.
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