研究目的
To assess the potential of using an on-line ECQCL-based sensor system to monitor the quality of the feedstock oil sands.
研究成果
The use of a mid-infrared laser-based technique may enable measurements of oil sands for applications where standoff working distances are necessary such as on-line monitoring. This study is a starting point for developing a real-time technique for the determination of the major mineral contents in oil sands feedstock to monitor and optimize the bitumen recovery process.
研究不足
The study suggests that more samples with a larger variability of quartz and total clay contents are needed to improve the quantitative prediction of the technique.
The mid-IR reflectance spectroscopy setup involves a Block Engineering LaserTune ECQCL module emitting a mid-IR beam focused on the sample at normal incidence angle. The reflected light is collected and focused on an Infrared Associate FT-IR-16 MCT detector. The ECQCL module is composed of four tunable lasers, and the reflection spectra are acquired by continuously tuning the center wavelength of the emitted light across a wavelength range. The raw reflection spectra are smoothed and normalized using the diffuse reflection spectrum of slightly pressed KBr powder. Eleven oil sands samples classified as high quartz to clay ratio (Q/C) and low quartz to clay ratio samples are used, with their mineralogy obtained by QXRD analysis after bitumen extraction.
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