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ORGANIZER;CN='8th ECIC & 9th ICSTI 2022':MAILTO:info@ecic-icsti.com
LOCATION:Room „Focke Wulf“
SUMMARY:Vitrinite Reflectance measurements of coking coal using an optical imaging analysis system
DESCRIPTION:The reflectance measurements of macerals have a prominent role in the assessment of coals. As vitrinite reflectance is used as a rank index, the reflectance of all macerals can be used to predict a coals behaviour during coke making. Whilst these measurements are traditionally done manually, semi-automated imaging and characterisation methods provide an alternate means for acquiring this information. 
CSIRO have developed a semi-automated optical reflected light imaging and analysis system, Coal Grain Analysis (CGA), which provides high resolution reflectance and composition information on a large individual coal particles. This paper presents the process of vitrinite reflectance analysis of coking coal samples using this system to complement the traditional manual process which have some inherent limitations.  First, continuous calibrated high-resolution images are collected across the settling plane on standard petrographic grain mounts in immersion oil using a 20X oil immersion objective following the standard calibration procedure similar to that detailed in [6].
The mosaicked images are then processed to obtain reflectance information, size, and compositional information for each individual particle in the image. The CGA processing software can export random reflectance measurements of vitrinite as well as inertinite information from individual particles. This provides reflectance information for tens of thousands of individual particles in a single sample; significantly higher than what is obtained by the industry standard manual method. This reflectance information can be used to compile maceral reflectance histograms which provides unique information to the industry for assessing the contribution of each of the macerals to coking performance.


CLASS:PUBLIC
DTSTART:20220631T170000
DTEND:20220631T172500
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