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| Theoretical and Experimental on Carbon Dioxide Sequestration Degree of Steel Slag |
| LI Jian-li1,ZHANG Hui-ning1,XU An-jun1,CUI Jian2, HE Dong-feng1,TIAN Nai-yuan1 |
1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
2. Ningbo Iron and Steel Co Ltd, Ningbo 315000, Zhejiang, China |
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Abstract The limitation and experimental CO2 sequestration degree of steel slag is the focus. The theoretical and the practical CO2 sequestration degree was assessed under mild operating conditions. After calculation in theory, it can be found that the CO2 sequestration limitation degree for every kilogram steel slag is about 442 g when taking magnesium into consideration, and the experimental CO2 sequestration degree for every kilogram slag is about 77 g, under the conditions that the liquid to solid ratio is 50 L/kg, CO2 flow is 0. 5 L/min and the temperature of reaction is the ambient temperature. When solution NH4Cl and CH3COOH for experiments and other conditions keep the same, the actual potential CO2 sequestration for every kilogram slag is 69. 3 g and 31. 20 g respectively. Thus, optimization of process parameters like granularity of slag is necessary to enhance the carbon dioxide sequestration degree for steel slag.
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Received: 06 September 2011
Published: 27 December 2012
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Corresponding Authors:
ZHANG HuiNing
E-mail: 1466443805@qq.com
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2012, Vol. 19 
