Study on Agglomeration and Reduction Roasting of Metallurgical Dusts and Sludge
Having poor hydrophilicity, metallurgical dusts and sludge are difficult to recycle. Aiming at producing metallic briquettes for iron-making, investigations on agglomeration and reduction of metallurgical dusts and sludge are studied. Composite binder (CB) is used in agglomeration of the dusts and sludge. FT-IR spectrum indicates that CB contains a variety of active groups (-OH,-COOH). Using the wet-grinding process, CB dosage can be decreased to 1.4%. Composite binder has the role of catalytic reduction at high temperature. Compared to using bentonite briquettes, the iron content and metallization ratio are increased 2%-3% by using CB, and the shape of them are kept good,. Under the conditions of roasting temperature 1275 ℃, and time 20 min, roasted briquettes with TFe of 64.74% and metallization ratio of 85.66% could be obtained for a sample of 38% TFe. The residual Zn and Pb contents meet the demands of iron-making.
metallurgical dusts and sludge comprehensive utilization composite binder reduction
ZHANG Yuan-bo HU You-ming HAN Gui-hong HUANG Yan-fang LI Guang-hui JIANG Tao
School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
国际会议
The 5th International Congress on the Science and Technology of Ironmaking(第五届国际炼铁科技大会 ICSTI09)
上海
英文
478-482
2009-10-20（万方平台首次上网日期，不代表论文的发表时间）