| 摘要 |
PURPOSE:To obtain a briquette at low cost, having adequate breaking strength even from low-grade coal, by molding a blend of coal powder, lime and cement followed by air-drying. CONSTITUTION:Coal powder made by grinding esp. low-grade coal is incorporated with lime as the sulfur-setting agent and pref. ca. 5-15wt% of cement as the binder to prepare mixed raw powder with the water content of said coal powder regulated pref. to 15-30wt%. Thence,, this mixed raw powder is molded into a briquette form through tablet press or extrusion press process followed by air-drying, thus obtaining the objective briquette.
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