Our clients are provided with statistical data detailing
the variation of their products on-line, via secured-access portal, and via e-mail. Automated
petrographic analysis of coalblends
The objective of automated
petrographic analysis of coal blends is to provide timely data on the distribution of
component coals in the blend, and provide a tool for process inspection.
On a daily basis, reports
tabulate component-coal percentages, mean reflectance and Total Inerts. Clients receive
Excel files of such data on a daily basis via automatically triggered e-mail
communication.
The Reflectance Profile of each
blend sample is archived daily, and these can be inspected and compared with others on any
time basis (daily, weekly, monthly), for rapid visual comparison of sample variations.
Run Charts of the percentage of
each component coal in the blend are updated daily. They show distribution about the mean
value and sigma variation. These are archived on a monthly basis for longer time-frame
comparisons.
Scattergram plots integrate daily
chemical assays of blends with petrographic component composition of the same samples. The
dry-volatile content of blend samples is plotted against the proportion of high-volatile
(or low-volatile) components in the coal which is determined by automated petrographic
analysis.
ISO Petrography
In those instances where a cargo
is sampled at frequent intervals, and vitrinite reflectance and maceral component analyses
are routinely performed, the on-line Run-charts of all petrographic parameters are
automatically updated with the addition of each new sample. The charts show sample
variation of means and standard deviations on such vital parameters as mean maximum
reflectance (Romax) of Vitrinite, and Total Inerts, over time frames that cover several
years.
