粒径分布实验

1、实验原始数据记录：1放大倍数为100的显微镜中目镜刻度尺每格所代表的长度为10M m.2将粉尘粒子投影径大小的测定结果列于表一中。表一粉尘粒径大小原始记录表序 号123456789101112131415161 718192 0格数3411.51.512.51.53314133.522.51.513.5M m7.5102.53.753.752.56.253.757.57.52.5102.57.58.7556.253.752.58.75序 号2122232425262728293031323334353637383940格数212.51.5221111.552321.521.510.53M m5

2、2.56.253.75552.52.52.53.7512.557.553.7553.752.51.257.5序 号4 142434445464748495051525354555657585960格数211.51.54221.534120.511211.521M m52.53.753.7510553.757.5102.551.252.52.552.53.7552.5序 号6162636465666768697071727374757677787980格数1.5321213220.511.5122.522341M m3.757.552.552.57.5551.252.53.752.556.255

3、57.5102.5序 号81828384858687888990919293949596979899100格数10.52212.52222232.5110.51121M m2.51.25552.56.25555557.56.252.52.51.252.52.552.5序 号101102103104105106107108109110111112113114115116117118119120格数3223111.51.52233.5232.52231.52M7.557.2.2.3.3.557.8.57.6.557.3.5m55557757525755555序1111111111111111111

4、1号2222222223333333333412345678901234567890格21.1.223222.3.31.2233.2211.数5555555M53.3.557.556.8.7.3.557.8.552.3.m775275757575555555序11111111111111111111号4444444445555555555612345678901234567890格2223.1.22.3222.2.2211.2332数555555M5558.3.56.7.556.6.552.3.57.7.5m7725225755555555序11111111111111111111号66666

5、66667777777777812345678901234567890格22.32.2221.23222.3411.33.2数555555M56.7.6.5553.57.556.7.12.3.7.8.5m252752505757555555序11111111111111111112号8888888889999999999012345678901234567890格2.10.41122.33222.311.2421.数555555M6.2.1.12.2.56.7.7.556.7.2.3.5153.m252055255255707555555（二）实验数据的处理根据实验的粉尘粒直径分布的计算方法将

6、数据整理成表二根据表二整理的数据画出粒径分布的直方图，频数曲线及累计频率曲线 按教材中的计算方法得出粉尘的特征数，整理成表三。表二粉尘粒径分布表组序粒径范围(p m)组中数频数n相对频 度()频度 (%)筛上累计分布(%)筛下累计分布(%)10 1.250.625632.4100021.25 2.51.8753718.514.897332.5 3.753.1252713.510.878.521.543.75 54.375683427.2653555 6.255.625178.56.8316966.25 7.56.8752914.511.622.577.577.5 8.758.12573.52.889288.75 109.375843.2496910 11.2510.630004961011.25 12,511.8810.50.4397表三粉尘的特征数特征数种类表征粉尘集中趋势的特征数表征粉尘离中趋势的特征数算术平均径中位径众径几何平均径极差标准差特征数大 小5.09p