Semi-synthetic bleaching earth
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United States of America Patent
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Aug 25, 2009
Grant Date -
Jun 15, 2006
app pub date -
Nov 30, 2005
filing date -
May 30, 2003
priority date (Note) -
Expired
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Abstract
The invention relates to a process of processing an acid suspension containing at least one solid, wherein (a) the suspension containing at least one solid is mixed with an alkali metal silicate solution, the pH of the mixture being adjusted to a pH of more than 4, and (b) the resulting precipitate which contains the alkali metal silicate and the at least one solid is separated and optionally washed, dried and ground. The mixture according to (a) after aging may be acidified further by the addition of an acid. Furthermore, there are disclosed an adsorbent obtainable according to the preceding process, and the use thereof.
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