【摘要】 采用氯化铵对电石渣进行除杂、碳化制备了纳米碳酸钙。优化实验结果表明:干燥温度105℃、pH=8、反应时间1h、氯化铵溶液浓度8%、氯化铵过量程度30%的条件下电石渣收率达92%以上。XRD分析表明产品为方解石,平均晶粒尺寸为38 nm,SEM表明平均颗粒径为80 nm。更多还原

【Abstract】 The preparation of nanosized calcium carbonate is carried by impurity removal and carbonization of carbide slag treated by ammonium chloride.The optimize experimental results show that carbide slag yield can reach over 92% by controlling drying temperature for 105 ℃,pH=8,reaction time for 1 h,concentration of ammonium chloride for 8% and excessive degree of ammonium chloride for 30%.Furthermore,the XRD results showed the production is calcite and the grain average size is 38 nm.And the average particle size in SEM is about 80 nm.更多还原