Method for Simultaneous Use of a Single Additive for Coal Flotation, Dewatering, and Reconstitution

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Description

A single dose of additive contributes to three consecutive fine coal unit operations, i.e., flotation, dewatering and reconstitution, whereby the fine coal is first combined with water in a predetermined proportion so as to formulate a slurry. The slurry is then mixed with a heavy hydrocarbon-based emulsion in a second predetermined proportion and at a first predetermined mixing speed and for a predetermined period of time. The conditioned slurry is then cleaned by a froth flotation method to form a clean coal froth and then the froth is dewatered by vacuum filtration or a centrifugation process to form reconstituted products … continued below

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23 p.

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Wen, Wu-Wey; Gray, McMahan L. & Champagne, Kenneth J. November 9, 1993.

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This patent is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 57 times. More information about this patent can be viewed below.

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Description

A single dose of additive contributes to three consecutive fine coal unit operations, i.e., flotation, dewatering and reconstitution, whereby the fine coal is first combined with water in a predetermined proportion so as to formulate a slurry. The slurry is then mixed with a heavy hydrocarbon-based emulsion in a second predetermined proportion and at a first predetermined mixing speed and for a predetermined period of time. The conditioned slurry is then cleaned by a froth flotation method to form a clean coal froth and then the froth is dewatered by vacuum filtration or a centrifugation process to form reconstituted products that are dried to dust-less clumps prior to combustion.

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23 p.

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OSTI as DE96005169

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  • Other Information: PBD: 9 Nov 1993

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  • Other: DE96005169
  • Report No.: PATENTS-US--A8149270
  • Office of Scientific & Technical Information Report Number: 204717
  • Archival Resource Key: ark:/67531/metadc670560

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Office of Scientific & Technical Information Technical Reports

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  • November 9, 1993

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  • June 29, 2015, 9:42 p.m.

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  • July 1, 2020, 9:53 a.m.

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Wen, Wu-Wey; Gray, McMahan L. & Champagne, Kenneth J. Method for Simultaneous Use of a Single Additive for Coal Flotation, Dewatering, and Reconstitution, patent, November 9, 1993; Pittsburgh, Pennsylvania. (https://digital.library.unt.edu/ark:/67531/metadc670560/: accessed June 12, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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