This standard stipulates the classification and naming of coal according to the dry basis sulfur (St, d) range. This standard applies to the classification of coal by sulfur content in coal exploration, production, processing and utilization.
GB/T 15224.2-1994 history
2021GB/T 15224.2-2021 Classification for quality of coal—Part 2: Sulfur content
2010GB/T 15224.2-2010 Classification for quality of coal.Part 2:Sulfur content
2004GB/T 15224.2-2004 Classification for coal quality Part 2:Sulfur content
1994GB/T 15224.2-1994 Classification for quality of coal--Classification for sulphur content of coal