Estimation of hardgrove grindability index (HGI) based …
experimental HGI data and predicted HGI from the linear multivariable regression. As shown in the Figure 2, the square correlation coefficient (R2) is 0.76. Relation of HGI and Individual Constituents Li et al., and Sengupta et al., examined the relation between the coal properties with HGI using a second order regression equation and found
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