Abstract
Coal is the predominant global energy source, where its consumption as metallurgical coke from fast-depleting prime coking coal is vital. In India, the complete depletion of prime coking coal and ultimate dependence on low-grade low-volatile coking coal reserves are the primary concern, so the need to explore alternative fuels, preferably with less climatic concern. Accordingly, a process for the synthesis of bio-coke, a novel product, using varying blending ratios (90:10, 80:20, 70:30, 60:40, and 50:50) of such inferior grade coal and biochars (derived at 550°C) of coconut shell (CSC), groundnut shell (GSC), sawdust (SDC), and sugarcane bagasse (SBC) in the presence of starch and molasses binders was developed via carbonization (at 800–1100°C). Obtained bio-cokes from coal and biochars with molasses possess better strength and plastic properties for metallurgical applications than those prepared with starch, and can be a sustainable substitute for metallurgical coke.
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