Method for increasing the wet bulk density of coking coals
CA 1187284 A · Owner: Bethlehem Steel Corporation · Inventors: Rice, David A.; Conarty, Thomas J. Jr.; Greenbaum, Robert R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A method for increasing the wet bulk density of coking coal charges for coke ovens which charges contain at least about 6 and as much as 13 weight percent moisture to, an optimum level of between about 47 and 50 pounds per cubic foot (753 to 801 kg per cubic meter) and for controlling and maintaining the bulk density at such optimum levels the, method including:, (a) forming a 5 to 20 weight percent aqueous dispersion of a surfactant having a desired viscosity, and, (b) applying a quantity of the aqueous dispersion to a quantity of coal equivalent to between about 0.5 and 2.5 pounds (0.227 and 1.135 kg) of surfactant per ton (907.2 kg) of coal the surfactant …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 21, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 21, 2002.
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Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.