Iron oxide is the main dust in steel rolling workshop, with unstable exhaust gas emission and high water content, and equipment is frequently changed and repaired resulting in difficult treatment. The wet electric de-dusting and plastic burner dust collector are generally adopted. The dust collectors for other raw material in feeding or transfer process are mainly bag dust collectors, and the emission meets the requirements of environmental de-dusting. At present, our company's main achievements include rolling workshop exhaust gas treatment project of Qian'an Jiujiang Coal Logistics Co.,Ltd, environmental de-dusting project of HBIS Group Tangsteel Company, HBIS Group Xuansteel Company and Shanxi Jianlong Industrial Co.,Ltd environmental de-dusting and other projects.