科研之友
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摘要
The substitution of coal blending with sawdust had been widely investigated for metallurgical coke production. In this paper, the physiochemical structures of the semicoke derived from sawdust/coals blends co‐coking were characterized by several analytical techniques including FTIR‐ATR, XPS, NMR, OM, and SEM. Meanwhile, the influence of the sawdust on the physicochemical properties of the sawdust/coals blends were also investigated. Results indicated that partial substitution of coal blending with sawdust benefited from the formation of colloid and optical anisotropy due to the positive synergetic effect, whereas high proportion of sawdust (>10?wt%) inhibited the agglomeration of semi‐coke. On the other hand, the semicoke consisted primarily of aromatic carbons replaced by the oxygen linked to carbons and aliphatic carbons when the coal blending was replaced by high proportion of sawdust, causing a less polyaromatic graphite‐like structure formation in the semicoke.(#br)Sawdust incorporation resulted in decreasing of vitrinite and increasing of inertinite. Positive synergetic benefited from the formation of optical anisotropy in the semicoke. Sawdust incorporation resulted in lower aromaticity of the semicoke. The non‐agglomeration of semicoke caused by the high proportion of sawdust.
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