Grindability index of coal is an important technological parameter to understand the behaviour and assess the relative hardness of coals of varying ranks and grades during comminution This is usually determined by Hardgrove Grindability Index (HGI), which involves requirement of a costly grinding equipment and accessories not readily available ....
CORRELATION BETWEEN BOND WORK INDEX AND MECHANICAL PROPERTIES OF SOME SAUDI ORES Gamal S Abdel Haffez KAU, Jeddah, KSA , correlation between the abrasion value(X2) and work index (Wi) is found , Hardgrove index, which generally used ,...
The correlation coefficients (R2) for the training and test data were 0962 and 082 respectively Sensitivity , Keywords coal chemical properties, Hardgrove Grindability Index, artificial neural network, back-propagation neural network * Department of Mining and Metallurgy Engineering, Amirkabir University of Technology, Tehran, Iran...
CONTRIBUTION TO DETERMINATION OF COAL GRINDABILITY USING HARDGROVE METHOD P , The Hardgrove grindability index value is influenced by petrographic composition of coal The analysis , Especially for these reasons mutual correlation between the results obtained using Hardgrove ,...
Studies have shown an approximate correlation of HGI and BWI based on the findings of several studies for a wide range of materials, but biomass was not amongst the materials tested , Bond proposed the following equation for finding the equivalent wet grinding work index (W i) from the Hardgrove Grindability Index :...
Mohs Hardness Hardgrove Grindability Correlation Hardgrove Grindability Index (short HGI) is a measure for the grindability of coalGrindability is an index, therefore it has no unit The smaller the HGI, the harder is coal texture and less grindable is the coal blast furnace slag hardness grind; mohs hardness hardgrove grindability ....
an inverse relationship exists between the Brabender hardness index and the Hardgrove 6rinJability index (Figure 2, Table IV) The correlation with the values obtained from the minus 4-mesh coal was much better than with those from the 16- by 30-mesh coal, even though the Hardgrove grindability test requires 16- by 30-mesh coal...
Grindability index of coal is usually determined by Hardgrove Grindability Index (HGI) The correlation between the proximate analysis of Chinese coal and HGI was studied...