型煤强度重复测试波动情况统计分析  

Statistical analysis of the fluctuation in repeated testing of briquette strength

作　　者：车永芳 CHE Yongfang(Test Center of CCTEG China Coal Research Institute,Chaoyang,Beijing 100013,China;China National Coal Quality Supervision Testing Center,Chaoyang,Beijing 100013,China)

机构地区：[1]煤炭科学技术研究院有限公司煤炭检测中心,北京市朝阳区100013 [2]国家煤炭质量检验检测中心,北京市朝阳区100013

出　　处：《中国煤炭》2024年第2期108-114,共7页China Coal

基　　金：煤科院科技发展基金项目(技术创新基金Ⅱ类)(2022CX-Ⅱ-12)。

摘　　要：分别利用无机黏结剂和有机黏结剂,在相同的实验条件下制备5种型煤,利用t分布对型煤的冷压强度、浸水强度、耐磨强度、热稳定性和落下强度的测值波动进行了统计分析。结果发现,型煤强度测试结果之间并无显著性差异,质量稳定性较好。无机黏结剂和有机黏结剂制备型煤的冷压强度的最大相对误差分别在4.11%和4.30%以内,浸水强度的最大相对误差分别在5.30%和5.68%以内。无机黏结剂制备型煤的落下强度、耐磨强度、热稳定性的最大相对误差分别在3.26%、2.76%和4.11%以内。型煤浸水强度的质量波动大于型煤的冷压强度,热稳定性比耐磨性测试的最大相对误差高,这与型煤强度测试流程长、测试干扰因素多有关。Five kinds of briquettes were prepared under the same experimental conditions with inorganic binders or organic binders.The measured value fluctuations of cold compression strength,immersion strength,abrasion resistance strength,thermal stability and crushing resistance of briquettes were statistically analyzed by using t distribution test.The results show that there is no significant difference among the results of the briquette strength tests,and the stabilities of briquette strength were preferable.The maximum relative errors of cold compression strength of briquettes prepared with inorganic binders and organic binders were within 4.11%and 4.30%,respectively;the maximum relative errors of the immersion strength of briquettes prepared with inorganic binders and organic binders were within 5.30%and 5.68%,respectively;the maximum relative errors of the shatter strength,abrasion resistance strength,thermal stability of briquettes prepared with inorganic binders were within 3.26%,2.76%,and 4.11%,respectively.The quality fluctuation of the immersion strength of briquette was greater than that of the cold compression strength,and the maximum relative error of thermal stability was higher than that of abrasion resistance strength,which was related to the long process and multiple interference factors of briquette strength testing.

关 键 词：型煤 冷压强度 热稳定性 统计分析 质量波动 

分 类 号：TQ534.2[化学工程—煤化学工程]