Paste production and storage process/apparatus

Details Paste production and storage process/apparatus Paste production and storage process/apparatus

B - Operations, Transporting

01

F

B01F 7/16 (2006.01) B01F 7/24 (2006.01) B01F 15/00 (2006.01) B01F 7/00 (2006.01)

Patent

CA 2170331

The invention provides a unique and novel vessel and process that concentrate solids, produces paste and stores paste from mixtures of solids and liquids. The vessel or tank includes a vertical shaft mounted within the tank and a means for rotating the shaft for circulating paste. The shaft includes a meansfor lifting the paste and a rake arm extending outwardly from a lower portion ofthe shaft for moving the paste radially inward. A vertical flow director within the tank is connected to the shaft for maintaining paste flow and facilitating pastecirculation at outer portions of the tank. A paste exit port through a lower portion of the tank is used for removing paste. The method of the invention forms a paste by first introducing a mixture of solids and liquids into a tank. A portion of the solids and liquids are lifted vertically to establish a circulation pattern within the tank. The circulation of the mixture of solids and liquids ismaintained within outer portions of the tank with at least one flow director. The mixture of solids and liquids is then circulated at a controlled rate to form paste.

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