GB/T 23561.12-2010 Methods for determining the physical and mechanical properties of coal and rock.Part 12:Methods for determining coal hardiness coefficient (English Version)
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GB/T 23561.12-2010
Scope
This part of GB/T 23561 specifies the terms and definitions, instruments and equipment, test piece specifications, measurement procedures and data calculation involved in the determination of the solidity coefficient of coal by the crushing method. This part is applicable to the determination of firmness coefficient of lignite, bituminous coal and anthracite, but not applicable to natural coke and coke.
GB/T 23561.12-2010 history
2010GB/T 23561.12-2010 Methods for determining the physical and mechanical properties of coal and rock.Part 12:Methods for determining coal hardiness coefficient