9-12型是化铁炉和纸箱机械专用的高压离心风机。输送气体应无腐蚀性不自燃、不含粘性物质的气体，输送介质温度一般不超过80℃，介质中所含的尘土及硬质颗粒150mg/m³

9-12 type cupola and carton machinery, high pressure centrifugalfan.Gas transportation should be non-corrosive is notspontaneous combustion, non-viscous material gas transmissionmedium temperature generally does not exceed 80 C,themedium contained in the dust and hard particles <150mg/m³