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HomeEnergyEnergy SourcesCoal Coal AnalysisHardgrove Grindability Index (HGI)
SGS is a world leader in coal and coke testing services. Our coal testing procedures are completed globally by technical experts in state-of-the-art facilities. SGS testing results are returned in a timely manner and comply with ASTM, ISO and other international standards.
HGI is determined through a multi-step procedure:
Typical resulting HGI values lie between 30 (increased resistance to pulverization) and 100 (more easily pulverized).
Experienced SGS technicians ensure your HGI testing is completed promptly and in accordance with global industry standards. Rely on the SGS global team for the results that allow you to make accurate estimations of the power requirements and throughput capacities in your facilities, leading to optimized plant operation and an improved bottom line.