Results 61 to 70 of about 111 (90)
Some of the next articles are maybe not open access.
Application of the Hardgrove grindability index in carbonate characterization
Mining, Metallurgy and Exploration, 1992The Hardgrove grindability test, commonly used in coal characterization, was conducted on 13 Mississippian carbonates from Kentucky, Tennessee and Illinois. The results demonstrated that the grindability increases with a decrease in the SiO2/(MgCO3+CaCO3) ratio, with fine-grained and petrographically-complex stones having lower grindabilities.
J. C. Hower, L. S. Barron, S. O. Moshier
exaly +2 more sources
Biomass Conversion and Biorefinery, 2021
Combustion behavior of rice straw torrefied at 300 °C for different residence time and their blends with sub-bituminous coal was investigated. The torrefied product and its blends were characterized for fuel properties and Hardgrove Grindability Index (HGI).
Sanjay R Dhakate
exaly +2 more sources
Combustion behavior of rice straw torrefied at 300 °C for different residence time and their blends with sub-bituminous coal was investigated. The torrefied product and its blends were characterized for fuel properties and Hardgrove Grindability Index (HGI).
Sanjay R Dhakate
exaly +2 more sources
Hardgrove grindability index prediction using support vector regression
International Journal of Mineral Processing, 2009Abstract Hardgrove grindability index (HGI) measures the grindability of coal and is a qualitative measure of coal. It is referred to in mining, beneficiation and utilization of coal. HGI of coal depends on the coal composition and there is an interest to predict this property from proximate analysis of coal. In this paper, support vector regression (
B. Venkoba Rao, S.J. Gopalakrishna
exaly +2 more sources
Effects of Moisture and Coal Blending on the Hardgrove Grindability Index of Pakistani Coals
International Journal of Coal Preparation and Utilization, 2014The Hardgrove Grindibility Index (HGI) of coal is an indicator of its grindibility characteristics to determine the energy required for its pulverization. The present study is aimed at investigating the effect of inherent moisture and the blending behavior on HGIs of indigenous coals.
Nadeem Sheikh
exaly +2 more sources
Influence of selected factors of Polish coking coals on the Hardgrove Grindability Index (HGI)
International Journal of Coal Preparation and Utilization, 2018ABSTRACTThis 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 same Polish coking-coal mine. The samples varied in terms of their quality parameters, i.e., volatile matter, ash content, chemical composition, maceral ...
Michał Rejdak +2 more
openaire +1 more source
GEOSAINS KUTAI BASIN, 2022
Abstrak Kualitas batubara ditentukan oleh kandungan HGI, Ash Content, Inherent Moisture, Total Sulfur dan Kalori. Tujuan penelitian ini dilakukan untuk mengetahui hasil uji HGI, Ash Content, Inherent Moisture, Total Sulfur, kalori serta hubungannya dengan kalori batubara. Penelitian ini menggunakan data sekunder.
Supriyanto Supriyanto +3 more
openaire +1 more source
Abstrak Kualitas batubara ditentukan oleh kandungan HGI, Ash Content, Inherent Moisture, Total Sulfur dan Kalori. Tujuan penelitian ini dilakukan untuk mengetahui hasil uji HGI, Ash Content, Inherent Moisture, Total Sulfur, kalori serta hubungannya dengan kalori batubara. Penelitian ini menggunakan data sekunder.
Supriyanto Supriyanto +3 more
openaire +1 more source
Arabian Journal of Geosciences, 2021
In this study, two limestone quarries, namely Quarry-1 and Quarry-2 were investigated in terms of the Schmidt Hammer Rebound (SHR) distribution. A total of 518 points, i.e., 158 points for Quarry-1 and 360 points for Quarry-2, were tested and evaluated in terms of SHR, respectively.
openaire +2 more sources
In this study, two limestone quarries, namely Quarry-1 and Quarry-2 were investigated in terms of the Schmidt Hammer Rebound (SHR) distribution. A total of 518 points, i.e., 158 points for Quarry-1 and 360 points for Quarry-2, were tested and evaluated in terms of SHR, respectively.
openaire +2 more sources
International Journal of Coal Geology, 2014
Abstract Hardgrove grindability index (HGI) has been a standard test in the coal and coal-fired power generation industries since the 1930s. Previous studies have demonstrated the relationship between HGI and coal rank and the maceral and mineral composition.
Antonia E. Hansen, James C. Hower
openaire +1 more source
Abstract Hardgrove grindability index (HGI) has been a standard test in the coal and coal-fired power generation industries since the 1930s. Previous studies have demonstrated the relationship between HGI and coal rank and the maceral and mineral composition.
Antonia E. Hansen, James C. Hower
openaire +1 more source