Device and method for monitoring material flow parameters along a passage

    公开(公告)号:US11536597B2

    公开(公告)日:2022-12-27

    申请号:US16637493

    申请日:2018-08-07

    Abstract: Described herein is a device (1) for measuring parameters of a material (3) flowing along a passage (5), the passage having two longitudinally spaced apart ends and transverse sides defined by one or more sidewalls (7, 9). The device (1) includes a laser source (15) positioned at a first location within or adjacent a side of the passage (5) and configured to generate a laser beam (17) at one or more predetermined frequencies. A beam projection element (21, 27) projects the laser beam (17) transversely across the passage (5) to irradiate the material (3) within a measuring zone (19). The measuring zone (19) includes a transverse region extending greater than 50% of the width of the passage (5). An optical imaging device (29) is positioned at a second location within or adjacent the passage (5) and configured to capture images of backscattered light from material (3) within the measuring zone (19). A processor (41) is in communication with the optical imaging device (29) and is configured to process the captured images and perform a scattering analysis to determine parameters of the material (3) through the passage (5).

    PROCESS FOR PURIFYING GRAPHITIC MATERIAL

    公开(公告)号:US20220281750A1

    公开(公告)日:2022-09-08

    申请号:US17635261

    申请日:2020-08-14

    Abstract: The present disclosure relates to a process for purifying graphitic material, in particular to achieve a high purity of >99.9% carbon (C). The process comprises a) heating a mixture of graphite and a eutectic mixture comprising two or more alkali metal hydroxides to produce a fused mass comprising the graphite and the eutectic mixture; b) leaching the fused mass with water or an aqueous solution to dissolve water-soluble impurities therein; and c) leaching the water-leached fused mass with an acidic solution to dissolve acid-soluble impurities therein, thereby producing high purity graphite.

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