Assignee: Dravo Lime, Inc.

Location: Pittsburgh, PA
No. of patents: 3

Number	Title	Issue Date
6250473	Method and apparatus for separating fast settling particles from slow settling particles A hydroseparator for separating particles based on the differences in settling rates such as for separating fly ash from gypsum includes a substantially cylindrical side wall closed at its bottom end by a floor. A laminar upflow is created through the hyd...	06/26/2001
6214313	High-purity magnesium hydroxide and process for its production Magnesium hydroxide of high purity, having a fine particle size suitable for use in flame retardants and other high-end uses, is produced by utilizing flue gas desulfurization system process slurry as feedstock; the production process is absent energy-int...	04/10/2001
6099816	Process for desulfurizing a sulfur-dioxide containing gas A desulfurization process using magnesium sulfites in a clear solution has the discharge from a wet scrubbing unit passed to a reaction tank. A silica-containing solid particulate material, such as sand, is added to the reaction tank and lime is added to ...	08/08/2000

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