Recycle of valuable products from oily cold rolling mill sludge  

作　　者：Bo Liu Shen-gen Zhang Jian-jun Tian De-an Pan Yang Liu Alex A.Volinsky 

机构地区：[1]Institute for Advanced Materials and Technology,University of Science and Technology Beijing [2]Department of Mechanical Engineering,University of South Florida

出　　处：《International Journal of Minerals,Metallurgy and Materials》2013年第10期941-946,共6页矿物冶金与材料学报（英文版）

基　　金：financially supported by the National Key Technology R&D Program(Nos.2012BAC02B01,2012BAC12B05,2011BAE13B07,and 2011BAC10B02);the National High-Tech Research and Development Program of China(No.2012AA063202);the National Natural Science Foundation of China(Nos.51174247 and51004011);the Science and Technology Program of Guangdong Province,China(No.2010A030200003);the Ph.D.Programs Foundation of the Ministry of Education of China(No.2010000612003)

摘　　要：Oily cold rolling mill （CRM） sludge contains lots of iron and alloying elements along with plenty of hazardous organic components, which makes it as an attractive secondary source and an environmental contaminant at the same time. The compound methods of ＂vacuum distillation ＋ oxidizing roasting＂ and ＂vacuum distillation ＋ hydrogen reduction＂ were employed for the recycle of oily cold rolling mill sludge. First, the sludge was dynamically vacuum distilled in a rotating furnace at 50 r/rain and 600℃ for 3 h, which removed almost hazardous organic components, obtaining 89.2wt% ferrous resultant. Then, high purity ferric oxide powders （99.2wt%） and reduced iron powders （98.9wt%） were obtained when the distillation residues were oxidized and reduced, respectively. The distillation oil can be used for fuel or chemical feedstock, and the distillation gases can be collected and reused as a fuel.Oily cold rolling mill （CRM） sludge contains lots of iron and alloying elements along with plenty of hazardous organic components, which makes it as an attractive secondary source and an environmental contaminant at the same time. The compound methods of ＂vacuum distillation ＋ oxidizing roasting＂ and ＂vacuum distillation ＋ hydrogen reduction＂ were employed for the recycle of oily cold rolling mill sludge. First, the sludge was dynamically vacuum distilled in a rotating furnace at 50 r/rain and 600℃ for 3 h, which removed almost hazardous organic components, obtaining 89.2wt% ferrous resultant. Then, high purity ferric oxide powders （99.2wt%） and reduced iron powders （98.9wt%） were obtained when the distillation residues were oxidized and reduced, respectively. The distillation oil can be used for fuel or chemical feedstock, and the distillation gases can be collected and reused as a fuel.

关 键 词：cold rolling mills SLUDGE RECYCLING DISTILLATION OXIDATION hydrogen reduction 

分 类 号：X703[环境科学与工程—环境工程]