According to the actual situation of heating furnace in Tianjin Tiangang United Co. Ltd, we designed a scientific and feasible solution of screw expanding power generator and auxiliary facilities matched, realized waste heat utilization of low-quality heat source from iron and steel industry exhausted, analyzed energy saving and environmental protection social benefit and good economic benefit that this solution have.

According to analysis of operation condition and failure mechanism of converter hood, we designed a protective coating material and sprayed on the converter hood of Tianjin Iron & Steel Group Co. Ltd. by supersonic arc spraying technology, extended the working life of the converter and increased the output and benefit.