摘要
采用排液法、振实法和自然堆积法3种方法测定竹炭密度,探究不同测定方法对试样规格、测试参数的要求及其对测试结果精确度的影响。结果表明:用排液法测试颗粒状竹炭密度时,测试介质宜选用液体石蜡,且机械窑竹炭的密度测定结果精确度更高,标准差为0.047 g·cm^(-3);用振实法测试粉末状竹炭密度时,选择振动频率200 r·min^(-1)、振动次数1000次、试样规格180目的参数条件下测定结果精确度最高,标准差为0.0032 g·cm^(-3);使用自然堆积法测定颗粒状竹炭密度时设定高度差3 cm时的测定结果精确度最高,标准差为0.00095 g·cm^(-3),测定粉末状竹炭密度时选择试样规格60目,下落高度5 cm时的测定结果精确度最高,标准差为0.00014 g·cm^(-3)。
Experiments were implemented on determination methods of density of bamboo charcoal with different specifications.The results showed that granular bamboo charcoal measured by drainage method,the liquid paraffin needed to be the test medium,and the density determination on mechanical kiln charcoal was more accuracy,with standard deviation of 0.047 g/cm^(3).The tap density of powdered bamboo charcoal measured by vibrating method,the highest accuracy was obtained under the conditions of vibration frequency of 200 r/min,vibration times of 1000 and particle size of 180,with standard deviation of 0.0032 g/cm^(3).Natural stacking method to determine the density of granular bamboo charcoal,the difference in height at 3 cm had the best accuracy,with the standard deviation of 0.00095 g/cm^(3).When measuring the density of powdered bamboo charcoal,the precision of density was higher with the particle size of 60 mesh and the falling height of 5 cm,and the standard deviation was 0.00014 g/cm^(3).
作者
应益山
江秀琴
赖竞恺
伊理孝
傅钰
周泽男
李文珠
YING Yishan;JIANG Xiuqin;LAI Jingkai;YI Lixiao;FU Yu;ZHOU Zenan;LI Wenzhu(Public Service Center of Xikou Town,Longyou 324403,China;Longyou Forestry Extension Station of Zhejiang,Longyou 324400,China;Zhejiang A&F University,Hangzhou 311300,China)
出处
《浙江林业科技》
2024年第4期62-67,共6页
Journal of Zhejiang Forestry Science and Technology
基金
国家林业和草原局林业行业标准(2020-LY-111)
浙江省重点研发计划项目(2021C03146)。
关键词
竹炭
密度
排液法
振实法
自然堆积法
bamboo charcoal
density
drainage method
vibration method
natural stacking method
