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Characterization of Athabasca oil sands froth treatment tailings for heavy mineral recovery

机译：阿萨巴斯卡油砂泡沫处理尾矿用于重矿物回收的表征

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摘要

Titanium (Ti) and zirconium (Zr) minerals (heavy minerals) in the Athabasca oil sands are concentrated in the bitumen froth treatment tailings during the hot water bitumen extraction operations. Recovery processes for these minerals have been explored since the 1970s, yet there is still no established process flowsheet to economically recover these minerals. We recently carried out a research project based on the knowledge of these previous studies. The objective of the project was to study the effect of residual bitumen removal methods from the froth treatment tailings on the separation characteristics of the heavy minerals contained in the tailings. The work reported in this paper is part of the project and it concerns the characterization of the froth treatment tailings. It was found that, rather than burning it off, the residual bitumen in the froth treatment tailings is worth recovering. Separation properties of the heavy minerals contained in the froth treatment tailings were studied by chemical assays, particle size-assay analysis, magnetic susceptibility measurements, gravity and magnetic separation, mineralogical analysis and scanning electron microscope (SEM) analysis coupled with energy dispersive x-ray (EDX) analysis.
机译：阿萨巴斯卡油砂中的钛（Ti）和锆（Zr）矿物（重矿物）在热水沥青提取操作过程中集中在沥青泡沫处理尾矿中。自1970年代以来就一直在探索这些矿物的回收方法，但是仍然没有既定的工艺流程来经济地回收这些矿物。我们最近根据这些先前研究的知识进行了一个研究项目。该项目的目的是研究泡沫处理尾矿中残留沥青去除方法对尾矿中重矿物分离特性的影响。本文报道的工作是该项目的一部分，涉及泡沫处理尾矿的表征。人们发现，泡沫处理尾矿中的残留沥青比将其燃烧掉更值得回收。通过化学分析，粒度分析，磁化率测量，重力和磁分离，矿物学分析和扫描电子显微镜（SEM）结合能量色散X射线研究了泡沫处理尾矿中重矿物的分离特性（EDX）分析。

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