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公开(公告)号：US11033837B2
公开(公告)日：2021-06-15
申请号：US15659441
申请日：2017-07-25
申请人： Andritz Inc.
摘要： A feedwell design for a clarifier that may better dissipate the entrance energy of feed slurry liquid exiting the feedwell and entering the clarifier. Plates having a surface area twisted around a longitudinal axis may be provided at the bottom of the feedwell. The plates may cause a change in the flow direction of the feed, from being mostly horizontal to mostly vertical, to slow the slurry. The provision of plates at the bottom of a feedwell in a clarifier may advantageously reduce the velocity of the materials entering the clarifier, or may increase the uniformity of the flow rate of the materials while reducing or maintaining the amount of shear force, turbulence, or other forces that may have a detrimental effect on clarification. Likewise, this may improve the rate at which solids settle out of the feed slurry solution, and thus improve the clarity of the removed liquid.
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公开(公告)号：US20190388809A1
公开(公告)日：2019-12-26
申请号：US16438732
申请日：2019-06-12
申请人： Andritz Inc.
IPC分类号： B01D33/067 , B01D33/073 , B01D33/74
摘要： A rotary drum filter comprising one or more divider plates disposed between the drum's outer surface and grids disposed radially outward from the drum's outer surface. The divider plates are desirably diagonally disposed along the drum's outer surface and have at least one end disposed near a drainage hole. The divider plates and open sections under the grids between circumferentially adjacent grids permits filtrate to flow under the grids. The divider plates and open sections under the grids permit the filtrate to flow into the nearest drainage hole while increasing the run underneath the grids, thereby permitting more filtrate to exit through a limited number of drainage holes.
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