Fe and Si were important factors for the fouling and slagging of Shenhua coal, and Ca, Si and Fe were prominent factors in the reburning with injected calcium.

• 神华煤中铁、硅在沾污结渣过程中作用很突出，而喷钙再燃工况时钙、硅、铁对沾污结渣的贡献最显著。