Prevention of Chromium Elution from Stainless Steel Slag into Seawater
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概要
- 論文の詳細を見る
Utilization of steelmaking slag is indispensable for sustainable growth of steelmaking industry. Steelmaking slag contains nutrition such as phosphorus, silicon and iron and may be utilized as a fertilizer if elution of environmentally regulated elements is negligible. Chromium is contained in stainless steel slag as an oxide and stabilization of this chromium oxide in the slag is very important in the view of environmental protection.Elution behavior of elements from chromium containing phases into seawater was investigated to observe the stability of phases that may exist in steelmaking slag. It was found that the existence of 2CaO·SiO2 enhanced the dissolution of chromium into seawater. Elution behavior of chromium from especially synthesized stainless steel slag into seawater was investigated. Finally, fixation of chromium was conducted by control of mineralogical phase with SiO2 addition to stainless steel slag. Addition of SiO2 to the slag was very effective for prevention of chromium elution into seawater.
- 2011-05-15
著者
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Hino Mitsutaka
Tohoku University
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MIKI Takahiro
Department of Metallurgy, Graduate School of Engineering, Tohoku University
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Samada Yusuke
Graduate School Of Engineering Tohoku University
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Miki Takahiro
Department Of Metallurgy Graduate School Of Engineering Tohoku University
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Hino Mitsutaka
Tohoku Univ.
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MIKI Takahiro
Department of Hygiene Service, Himeji Livestock Hygiene Service Center, 2-10-16, Tadera-higashi, Himeji, Hyogo 670-0081, Japan
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MIKI TAKAHIRO
Department of Emergency and Disaster Medicine, Juntendo University
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