Analysis of PM2.5 Particle Size Distribution Characteristics in the Smelting Industry
Based on the actual situation of a metallurgical enterprise,PM2.5 particles were detected using both blast furnace ironmaking process and converter steelmaking process.The results showed that the PM2.5 particle number concentration in the blast furnace ironmaking process was 450~850 particles/mm3,with a mass concentration of 1.50~3.50 mg/m3.The PM25 particle number concentration in the ore tank was 160~210 particles/mm3,with a mass concentration of 2.4~7.4 mg/m3.Adopting the converter steelmaking process,the concentration of PM25 particles in a single flue gas is 220~360 particles/mm3,with a mass concentration of 5.4~15.7 mg/m3.The refined PM25 particle count concentration is 40~119 particles/mm3,and the mass concentration is 2.8~3.5 mg/m3.By analyzing the PM25 particle size distribution characteristics in the smelting industry,data support can be provided for the prevention and control of dust pollution in black metal smelting.
ferrous metal smeltingPM2.5 particulate matterdistribution characteristics