Interrelationships between the Bond Grindability with Physicomechanical and Chemical Properties of Coals

Abstract

In this research, different techniques for the estimation of Bond grindability (G_bg ) values of coals are studied. Data from ten sub-bituminous coals from Turkey are used by featuring physicomechanical (ISI, Is, and F_D ) and eight chemical coal parameters, which include proximate analysis (moisture, ash, volatile matter, fixed carbon, and calorie). Linear and multivariable linear regression techniques are used for predicting the G_bg values for the specified coal parameters. Results indicate that a multivariable linear regression gave the most accurate G_bg prediction than simple regression in the estimation process.

Keywords:

• Bond grindability
• chemical properties
• coal
• physicomechanical properties