公开(公告)号：US20130075340A1

公开(公告)日：2013-03-28

申请号：US13620121

申请日：2012-09-14

申请人： BARRY BARA ,  SIMON YUAN ,  RON SIMAN ,  CLARA GOMEZ

发明人： BARRY BARA ,  SIMON YUAN ,  RON SIMAN ,  CLARA GOMEZ

IPC分类号： C02F1/56

CPC分类号： C02F1/56 ,  C02F1/38 ,  C02F9/00 ,  C02F2103/10 ,  C02F2209/44

摘要： A process for flocculating and dewatering oil sands fine tailings is provided, comprising: adding the oil sands fine tailings as an aqueous slurry to a stirred tank reactor; adding an effective amount of a polymeric flocculant to the stirred tank reactor containing the oil sands fine tailings and operating the reactor at an impeller tip speed for a period of time that is sufficient to form a gel-like structure; subjecting the gel-like structure to shear conditions in the stirred tank reactor for a period of time sufficient to break down the gel-like structure to form flocs and release water; and removing the flocculated oil sands fine tailings from the stirred tank reactor when the maximum yield stress of the flocculated oil sands fine tailings begins to decline but before the capillary suction time of the flocculated oil sands fine tailings begins to substantially increase from its lowest point.

摘要翻译： 提供了一种絮凝和脱水油砂细尾矿的方法，包括：将油砂细尾矿作为含水浆料加入到搅拌釜反应器中; 向含有油砂细尾矿的搅拌釜反应器中加入有效量的聚合物絮凝剂，并以叶轮尖端速度操作反应器一段足以形成凝胶状结构的时间; 使凝胶状结构在搅拌釜反应器中剪切条件足以分解凝胶状结构以形成絮凝物并释放水; 并且当絮凝油砂细尾矿的最大屈服应力开始下降时，但是在絮凝油砂的精细尾矿的毛细管抽吸时间从其最低点开始显着增加之前，从搅拌釜反应器中除去絮凝油砂的细尾矿。