Effects of Additives and Temperature on the Dissolution Rate and Diffusivity of MgO in CaO-Al2O3 Slags under Forced Convection
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- Amini Shahriar
- CSIRO Minerals School of Chemical Sciences and Engineering, The University of New South Wales
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- Brungs Michael
- School of Chemical Sciences and Engineering, The University of New South Wales
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- Jahanshahi Sharif
- Research Program Manager, High Temperature Processing, CSIRO Minerals
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- Ostrovski Oleg
- School of Materials Science and Engineering, The University of New South Wales
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The dissolution rate of dense magnesia specimen in calcium aluminate based melts was measured in air over the temperature range of 1450–1600°C, using a rotating disk/cylinder technique. The measured dissolution rates were strongly dependent on the rotation speed with the results indicating mass transfer in the slag phase to be the rate-limiting step. At a given rotation speed, the dissolution rate was strongly dependent on the slag chemistry and temperature. The diffusivity of MgO in the slag was calculated from the dissolution rate and solubility data, using known mass transfer correlations. Addition of FeOx and CaF2 and increasing the temperature, resulted in substantial increase in the dissolution rate and deduced diffusivity of MgO in the slag.
収録刊行物
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- ISIJ International
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ISIJ International 46 (11), 1554-1559, 2006
一般社団法人 日本鉄鋼協会
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詳細情報
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- CRID
- 1390282681465939968
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- NII論文ID
- 10018555083
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- NII書誌ID
- AA10680712
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- ISSN
- 13475460
- 09151559
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可