【摘要】 为缩短分析时间 ,对用灼烧恒重法测定煤炭中灰分的影响因素—温度、灼烧时间、测定煤样量进行探讨 ,结果表明 ,适宜的分析条件为 :85 0℃ /4 5min/1.0 0 0 0g及 75 0℃ /3 0min/0 .5 0 0 0g ,采用煤样灰分曲线实验对优化的条件进行了验证 ,两种条件的分析结果未出现明显系统误差 ,准确性及重现性良好。在优化的分析条件下 ,全部分析时间仅为 70～ 90min更多还原

【Abstract】 In order to shorten analysis time, the influencing factors of ash determination in coal with burning constant weight method, namely temperature, burning time and the quantity of coal sample, are discussed. The results show that the befitting conditions are 850℃/45min/1.0000g and 750℃/30min/0.5000g. Optimized conditions are validated by ash curve experimentation, and the analyses results have good veracity and reproducibility, have no obvious systematic error and all the analyses is only 70～90min on the two optimized analyses conditions.更多还原