Hybrid bitumen extraction (HBE) at ambient conditions has potential, as an alternative to the commercially used modified Clark hot water extraction (CHWE) for mined oil sands. In this work, the dewatering behaviors of tailings suspensions generated on a pilot scale from standard CHWE and from HBE are studied. Using a centrifuge‐based technique, sediment height at a given centrifugal acceleration is measured as a function of time, as is equilibrium consolidation height vs. acceleration. By fitting the measurements to a consolidation model, compressive yield stress data is obtained. Settling of tailings suspensions under earth's gravitation are also observed for comparison. Results demonstrate that the suspensions from the pilot HBE process settle faster than those from standard aqueous process at a given acceleration. The data also suggest that the suspensions from the pilot HBE are more compressible, as indicated by higher final compressed solids weight fraction for a given yield stress.© 2018 Her Majesty the Queen in Right of CanadaAIChE Journal © 2018 American Institute of Chemical EngineersReproduced with the permission of the Minister of Natural Resources Canada. AIChE J, 65: 250–258, 2019

中文翻译：

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新型沥青提取工艺对开采的油砂尾矿行为的影响

在环境条件下，混合沥青提取（HBE）具有潜力，可替代用于开采油砂的商业化改良克拉克热水提取（CHWE）。在这项工作中，研究了从标准CHWE和HBE中试规模产生的尾矿悬浮液的脱水行为。使用基于离心的技术，测量给定离心加速度下的沉积物高度随时间的变化，以及平衡固结高度与加速度的关系。通过将测量结果拟合到固结模型，可以获得压缩屈服应力数据。还观察到在地球重力作用下的尾矿悬浮液沉降以进行比较。结果表明，在给定的加速度下，中试HBE工艺的悬浮液比标准水性工艺的悬浮液沉降更快。AIChE J，65：250–258，2019