Recycle of valuable products from oily cold rolling mill sludge
来源期刊：International Journal of Minerals Metallurgy and Materials2013年第10期
论文作者：张炯明 Shen-gen Zhang Jian-jun Tian De-an Pan Yang Liu Alex A.Volinsky
文章页码：941 - 946
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/min and 600 C 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.
Bo Liu1，Shen-gen Zhang1，Jian-jun Tian1，De-an Pan1，Yang Liu1，Alex A.Volinsky2
1. Institute for Advanced Materials and Technology,University of Science and Technology Beijing2. Department of Mechanical Engineering,University of South Florida
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/min and 600 C 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.
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