Optimization of reflectance measurements on complex blends WG
|October 11, 2021||Filled under Com III||
During 66th Annual meeting of ICCP at Kolkata during 20-27 September, 2014 the Optimization of reflectance measurements on complex blends working group (WG) was constituted to study the vitrinite reflectance values of complex blends aimed for precise industrial usage. The aim is to reduce and optimise the number of counts of vitrinite reflectance from 1000 (as per ISO standards-7404, part V) to a lower but reproducible number. Some analysts use 500, but the standard has not yet been revised.
Activities in individual years and publications:
To date (2021)
- 4 complex coal blend samples using 4 coal samples from 3 different countries (viz. USA, Mozambique, and India) were prepared and distributed at the 2018 ICCP meeting in Brisbane.
- Participants were asked to prepare polished pellets for analysis of random reflectance Rvo as per ISO -7404 procedures
- In each polished coal pellet, counts for reflectance measurements at 100 measurement intervals up to 1000 vitrinite grains.
- Results have come in at varying rates, as it is a time-consuming exercise, and it is proposed that the exercise will be completed by July 2022 for discussion at the ICCP meeting in New Delhi.
The conveners thank Ms Priya Kumari, CSIR-CIMFR (Associate Member, ICCP) for providing the coal samples (Indigenous and imported) from her samples under PhD for our exercise on Complex Coal Blend Reflectance.