Understanding coal quality and the critical importance of comprehensive coal analyses

JC Hower, RB Finkelman, CF Eble, BJ Arnold - International Journal of Coal …, 2022 - Elsevier
Coal is a remarkably complex combination of macerals and minerals and inorganic
elements in organic associations plus liquids, gases, and semi-solid organics, all …

Soft modelling of the Hardgrove grindability index of bituminous coals: An overview

JC Hower, AH Bagherieh, SR Dindarloo… - International Journal of …, 2021 - Elsevier
Predictions of the Hardgrove grindability index, a predictor of the crushing and pulverization
propensity of coal, have been made using both regression and neural network techniques …

Research on the prediction of tar potential and maceral recognition based on artificial neural network: A case study of tar-rich coal from north Shaanxi, China

S Zhao, J Fan, D Wang, Z Yang, J Yin, H Yang - Fuel, 2024 - Elsevier
The high tar yield of tar-rich coal is ascribable to the complex interplay and coupling effects
among various factors, which pose a significant challenge to its tar yield prediction owing to …

[HTML][HTML] Predicting the hardgrove grindability index using interpretable decision tree-based machine learning models

Y Chen, M Khandelwal, M Onifade, J Zhou, AI Lawal… - Fuel, 2025 - Elsevier
The Hardgrove grindability index (HGI) is a crucial indicator for assessing the grindability of
coal, and accurate prediction of HGI is essential for improving the production efficiency and …

A new approach for the testing method of coal grindability

S Yilmaz - Advanced powder technology, 2019 - Elsevier
In this study, a total of 26 hard coal sample (either clean or original) from Zonguldak Coal
Basin (17 from Zonguldak, 9 from Amasra) and a total of 17 low grade Turkish coals from …

Influence of selected factors of Polish coking coals on the Hardgrove Grindability Index (HGI)

M Rejdak, T Micorek, JC Hower - International Journal of Coal …, 2021 - Taylor & Francis
This paper presents the results of a study on the influence of selected parameters of coal on
the Hardgrove Grindability Index (HGI). The samples used in the investigation came from the …

Effect of chemical, mineralogical, and petrographic properties on the grindability of a South African Highveld coal

R Matjie, J Bunt, A Goosen, K Mphahlele… - Journal of the Southern …, 2023 - scielo.org.za
Coal properties that are associated with wear and damage of grinding equipment during
pulverization prior to combustion were investigated. A South African Highveld feed coal and …

Measurement of carbon dioxide adsorption capacity on selected Turkish lignites

BCB Keza, A Argönül, D Alp - International Journal of Greenhouse Gas …, 2022 - Elsevier
In this work, CO 2 adsorption capacities of samples from the four coal (lignite) basins: Soma,
Tuncbilek, Tekirdag-Saray and Afsin-Elbistan were experimentally determined at 313.15 K …

Coal quality analysis at CV Bara Mitra Kencana Sawahlunto West Sumatera

H Prabowo, E Barlian, N Syah… - AIP Conference …, 2024 - pubs.aip.org
One of the main parameters that determine the processing and utilization of coal mining is
the quality of the coal. This research was conducted to determine the quality of coal based …

Chemical grinding index for Turkish lignites

M Bilen, A Rasskazova… - International Journal of …, 2023 - inderscienceonline.com
In this study, coal samples were collected from 17 various locations in Turkey. Collected and
cleaned samples were tested in terms of ash and volatile matter content, and ash chemical …