In the condition of high combustion temperature, coal minerals are first decomposed and gasified, and when plume is cooling, they can form lots of submicron particles though nucleation, condensation and agglomeration.

• 在燃烧的高温条件下，煤中的矿物质首选经历热分解和气化，当烟气冷却时，它们经过冷凝成核、凝结和团聚等作用，形成大量细粒子。