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Utilization of lightweight materials made from coal gasification slags. Quarterly report, September 15--November 30, 1994
Publication year - 1997
Language(s) - English
Resource type - Reports
DOI - 10.2172/650103
Subject(s) - slag (welding) , waste management , kiln , coal , fly ash , environmental science , process engineering , engineering , mechanical engineering
Coal gasification technologies are finding increasing commercial applications for power generation or production of chemical feedstocks. The integrated-gasification-combined-cycle (IGCC) coal conversion process has been demonstrated to be a clean, efficient, and environmentally acceptable method of generating power. However, the gasification process produces relatively large quantities of a solid waste termed slag. Regulatory trends with respect to solid waste disposal, landfill development costs, and public concern make utilization of slag a high-priority issue. Therefore, it is imperative that slag utilization methods be developed, tested, and commercialized in order to offset disposal costs. This project aims to demonstrate the technical and economic viability of the slag utilization technologies developed by Praxis to produce lightweight aggregates (LWA) and ultra-lightweight aggregates (ULWA) from slag in a large-scale pilot operation, followed by total utilization of these aggregates in a number of applications

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