Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2001.10a
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- Pages.432-436
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- 2001
Preparation of Calcium Sulfate Hemihydrate Using Stainless Refinery Sludge and Waste Sulfuric Acid
- Eun, Hee-Tai (Institute of Geosicience & Mineral Resources) ;
- Ahn, Ji-Whan (Institute of Geosicience & Mineral Resources) ;
- Kim, Hwan (School of Materials Science and Eng., Seoul National University) ;
- Kim, Jang-Su (Pohang Iron & Steel Co.) ;
- Sung, Ghee-Woong (Pohang Iron & Steel Co.)
- Published : 2001.10.01
Abstract
In this study, calcium sulfate(gypsum) powder was obtained using waste sulfuric acid and stainless refinery sludge by- produced from chemical reagent and the iron industry, by the neutralization of waste sulfuric acid. As variables for the experiment the mole ratio of the H