Coal combustion for power generation is one of the main sources of PM2.5in the atmosphere.PM2.5reduction during coal combustion contributes significantly to improving atmospheric environmental quality in the city.PM2.5generated from coal combustion mainly consists of two types of particulate matter

namely the ultrafine mode particles and central mode particles

which are formed in different mechanisms.Control in furnace is an effective strategy for PM2.5reduction during coal combustion

including optimization of coal properties and combustion conditions

additive injection like kaolin and limestone

coal blending and co-combustion with biomass and sewage sludge.In addition

slagging and fouling should be considered because of changes in mineral transformation.It is economical to achieve multi-pollutant removal during PM2.5reduction.