Abstract: At present,the entire aqueous method（OG） and the electricity dust removal dry method（LT） are used to remove steel-making converter gas and dust at home and abroad.The afterheat with 800 ~ 1,000℃emitted from vaporization hoods can not be recovered in these two dust removal methods and a great deal of water is consumed.It is necessary to adopt new and innovative dust removal technology to carry out research and experiments for recovering the afterheat and water conservation,which will greatly reduce the energy consumption per ton.