作者单位:REN Qian-qian,HAO Su-ju,JIANG Wu-feng,ZHANG Yu-zhu(College of Metallurgy and Energy, Hebei United University, Hebei key laboratory of modern metallurgy technology, Tangshan Hebei 063009,China)任倩倩,郝素菊,蒋武锋,张玉柱(河北联合大学冶金与能源学院,河北省现代冶金技术重点实验室,唐山063000)