Dissolution behavior of nutrition elements from steelmaking slag into seawater
Dissolution behavior of nutrition elements from steelmaking slag into seawater
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DOI：
10.2355/isijinternational.44.753
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发表时间：
2004-01-01
影响因子：
1.8
通讯作者：
Hino, M
中科院分区：
文献类型：
--
作者：
Futatsuka, T;Shitogiden, K;Hino, M
抑制一氧化碳和钢铁过程中排放的炉渣等废物是保护全球环境和钢铁工业可持续发展的一些典型的最大问题。利用活性浮游植物的生长将是高效稳定和抑制CO2的最佳选择之一，C、O、N、Si、P、le等无机矿物质是浮游植物增殖所必需的，了解钢渣中某些元素在海水中的溶解行为对浮游植物增殖有效地向海水提供营养是至关重要的。首先，研究了钢渣冷却过程中析出相的形态。其次，研究了钢渣和4CaO等纯物质中某些元素的溶解行为。P2 O 5（8.5质量% P）、3CaO。P2 O 5（10.0质量% P）和2CaO。SiO2-3CaO。P_2O_5（2.8mass%P）固溶体相在人工海水中的溶解性也进行了研究。第三，利用Si、P、Fe在海水中的稳定性图，探讨了钢渣中元素的溶解机理。
Suppression of CO, and waste such as slags discharged from iron- and steelmaking processes are some of the typical biggest issues for the protection of global environment and sustainable growth of steelmaking industry. Utilization of active phytoplankton growth will be one of the best options to stabilize and suppress carbon dioxide at high-efficiency.Inorganic minerals such as C, O, N, Si, P and le are necessary for phyloplankton multiplication, It is crucial for supply of nutrition into seawater effectively for phytoplankton multiplication to understand the dissolution behavior of some elements from steelmaking slags into seawater. Firstly, the morphology of the precipitated phases in steelmaking slags during cooling period was investigated in the present work. Secondary, the dissolution behavior of some elements from steelmaking slags and pure substances such as 4CaO . P2O5 (8.5 mass% P), 3CaO . P2O5 (10.0 mass% P) and 2CaO . SiO2-3CaO . P2O5 (2.8 mass% P) solid solution phase into artificial seawater has also been studied. Thirdly, the dissolution mechanism of elements from steelmaking slags was discussed by using stability diagrams of Si, P and Fe in seawater.