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| Titel: |
A feasibility study of an integrated process for solid waste utilization |
| Auteur: |
Tao, D. Chen, S. Parekh, B.K. Hepworth, M.T. |
| Verschenen in: |
International journal of mining, reclamation and environment |
| Paginering: | Jaargang 14 (2000) nr. 4 pagina's 325-335 |
| Jaar: |
2000 |
| Inhoud: |
Pre-combustion coal cleaning and post-combustion flue gas desulfunzation (FGD) using lime or limestone are often used to reduce sulfur dioxide (SO2) emission from high-sulfur coal combustion. These processes generate voluminous pyrite and gypsum solid wastes that are usually landfilled, occupying thousands of acres of land and creating serious land and water pollution problems due to the release of acids and toxic substances. An integrated thermochemical process has been developed for the combined utilization of gypsum and pyrite wastes by converting them into useful products including lime, sulfur, and direct reduced iron (DRI). The thermochemical reactions involved in the process were studied using thermogravimetric analysis (TGA) for reaction kinetics and X-ray diffraction (XRD) technique for product characterization. Reaction rate constant and activation energy were determined for individual reactions. Process variables studied included reaction temperature, time, reactant composition, and the purity of reactants. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 1 van 13 gevonden artikelen
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