煤样品制备及均匀性检验方案设计(gao)

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1、煤样品制备及均匀性检验方案设计1制备过程合格粗碎煤破碎粉碎≥0.2mm(80目)筛分<0.2mm(80目)人工混匀称量装瓶均匀性检验样品2制备数量和种类种类：两种以上，命名为煤-1，煤-2，煤-3；数量：5kg；需测试成份：全硫、灰分、挥发分3需提供的均匀性检验的测量数据分别随机选择10瓶（15g/瓶）煤样品进行均匀性检验。对选取的每个样品中的测试成份全硫、灰分、挥发分，在重复条件下测试2次，而且所采用的测试方法其精密度和灵敏度应比较高。最终测试结果填入下表。表1　样品均匀性检验各成份测定结果样品编号煤-1　w全硫%煤-1　w灰分%测定1测定2

2、测定1测定210.310.318.758.7420.300.308.78.7230.300.318.698.7640.310.308.798.7450.320.338.78.7960.310.338.748.7970.320.318.748.8380.320.328.838.7390.310.328.788.76100.300.328.818.84总平均值0.318.76续表1样品编号煤-1　w挥发分%测定1测定2123.4323.52223.5123.27323.4023.47423.2923.50523.5723.40623.3523.30

3、723.3323.30823.4223.39923.5623.601023.3223.29总平均值23.41表2　样品均匀性检验各成份测定结果样品编号煤-2　w全硫%煤-2　w灰分%测定1测定2测定1测定211.531.509.719.7421.501.509.769.7831.511.539.849.8841.531.549.679.7051.521.539.769.7861.531.539.779.8271.541.559.779.7281.541.579.829.8591.511.539.709.73101.511.519.809.81总

4、平均值1.539.77续表2样品编号煤-2　w挥发分%测定1测定2128.5028.29228.5128.34328.2028.22428.1728.17528.3728.48628.2928.52728.5928.66828.3228.25928.3428.261028.4428.45总平均值28.37表2　样品均匀性检验各成份测定结果样品编号煤-3　w全硫%煤-3　w灰分%测定1测定2测定1测定210.710.713.843.8220.720.733.863.8830.720.713.863.8240.730.743.903.8650.73

5、0.733.873.9260.720.753.903.8470.710.733.903.9380.730.723.813.8390.740.733.923.88100.730.733.863.88总平均值0.733.87续表2样品编号煤-3　w挥发分%测定1测定2126.8126.94226.6926.89326.9026.78426.9826.71526.6926.62626.9026.86726.8126.92826.8026.79926.8826.981026.7926.75总平均值26.82