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,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,选煤厂水力分级设备工艺效果评定方法,选煤厂水力分级设备工艺效果评定方法,水力分级设备工艺效果的评定指标共三项：分级效率，平均分配误差和通过粒度,一、水力分级设备工艺效果评定指标,1,、综合指标,分级效率,分级效率，；,粗粒物正配效率，；,细粒物正配效率，；,水力分级设备工艺效果的评定指标共三项：分级效率，平均分配,底流产物产率，；,底流产物中粗粒物含量（占本级），；,计算入料中粗粒物含量，；,底流产物产率，；底流产物中粗粒物含量（占本级），；,计算入料中细粒物含量，；,底流中细粒物含量（占本级），。,计算入料中细粒物含量，；底流中细粒物含量（占本级），,说明：,（,1,）,uc,和,uf,可由底流产物粒度特性曲线查获；,（,2,）,Fc,r,和,Ff,r,则由计算入料粒度特性曲线查获；,（,3,）用规定粒度划分粗粒物和细粒物；,（,4,）计算斗子捞坑的入料和底流物的数量百分数时，应扣除大于,3mm,的部分。,说明：,2,、平均分配误差,平均分配误差；,上分配误差；,下分配误差；,分配粒度；,分配曲线上对应于分配率为,75%,的粒度值；,分配曲线上对应于分配率为,25%,的粒度值,2、平均分配误差平均分配误差；,说明：,（,1,）,S75,、,S25,、,Sp,分配曲线上查,（,2,）当分配曲线不规整，无法同时求得,S75,、,S25,时，则可由,PEu,或,PEm,代替,PEm,3,、通过粒度,以溢流物中,95%,的量通过标准筛筛孔的大小来表示,4,、指标计算,产物产率的确定,（,1,）计量法测定,（,2,）计量有困难时，按格式法计算,说明：,数据检验,绘制曲线,（,1,）粒度特性曲线：实测入料、计算入料、各分级产物由细至粗的累积粒度特性曲线,（,2,）粒度分配曲线：底流产物的分配曲线,数据检验绘制曲线,某选煤厂斜板沉淀设备直径,8,米，其入料、底流、溢流的筛分组成如下表所示，要求评定该设备工艺性能。,粒级,mm,入料,G,f,%,底流,G,u,%,溢流,G,0,%,1,2,3,4,+1.00,5.63,30.59,0,1-0.5,3.02,2.39,0,0.5-0.25,5.43,15.73,0,0.25-0.125,4.23,9.05,1.00,0.125-0.075,4.63,6.25,1.52,0.075-0.045,4.23,4.74,2.84,-0.045,72.8,31.25,94.64,计,100,100,100,某选煤厂斜板沉淀设备直径8米，其入料、底流、溢流的筛分组成如,（,1,）格氏法计算产率,（,2,）计算：底流、溢流站入料的粒度组成、计算入料的粒度组成,（,3,）数据检验,（,4,）绘制曲线,粒度特性曲线：实测入料、计算入料、各分级产物由细至粗的累积粒度特性曲线,粒度分配曲线：底流产物的分配曲线,（,5,）计算分级效率、平均分配误差,（1）格氏法计算产率（2）计算：底流、溢流站入料的粒度组成、,粒级,mm,入料,G,f,%,底流,G,u,%,溢流,G,0,%,G,fi-,G,i0,G,ui,-G,oi,1,2,3,4,5,2-4,6,3-4,7,6,2,8,56,+1.00,5.63,30.59,0,5.63,30.59,935.75,172.22,1-0.5,3.02,2.39,0,3.02,2.39,5.71,7.22,0.5-0.25,5.43,15.73,0,5.43,15.73,247.43,85.41,0.25-0.125,4.23,9.05,1.00,3.23,8.05,64.8,26.00,0.125-0.075,4.63,6.25,1.52,3.11,4.73,22.37,14.71,0.075-0.045,4.23,4.74,2.84,1.39,1.90,3.61,2.64,-0.045,72.8,31.25,94.64,-21.8,-63.39,4018.29,1382.54,计,100,100,100,5297.96,1690.74,产率计算表,粒级入料底流溢流Gfi-Gi0Gui-Goi12345678,粒级,mm,底流,G,u,%,占本级 占入料,溢流,G,0,，,%,占本级 占入料,计算入料,G,f,%,1,2 3,4 5,6,+1.0,30.59 9.76,0,9.76,1-0.5,2.39 0.76,0,0.76,0.5-0.25,15.73 5.02,0,5.02,0.25-0.125,9.05 2.89,1.00 0.68,3.57,0.125-0.075,6.25 1.99,1.52 1.03,3.02,0.075-0.045,4.74 1.51,2.84 1.93,3.44,-0.045,31.25 9.98,94.64 64.45,74.43,合计,100.0 31.91,100.0 68.09,100.0,计算入料粒度组成,粒级 mm 底流 Gu,%,粒级,mm,入料,Gf,，,%,计算入料,G,f,%,1,2,3,4(3-2),5(4,2,),+1.0,5.63,9.76,4.13,17.06,1-0.5,3.02,0.76,-2.26,5.11,0.5-0.25,5.43,5.02,-0.41,0.17,0.25-0.125,4.23,3.57,-0.66,0.43,0.125-0.075,4.63,3.02,-1.61,2.59,0.075-0.045,4.23,3.44,-0.79,0.62,-0.045,72.83,74.43,1.60,2.56,计,100.0,100.0,31.1,计算均方差,粒级 mm入料计算入料1234(3-2)5(42)+1.05,选煤厂水力分级设备工艺效果评定方法课件,粒级，,mm,计算入料,r,%,底流,r%,溢流,r,%,+1.0,9.76 100.0,100.0,1-0.5,0.76 90.24,69.41,0.5-0.25,5.02 89.48,67.02,0.25-0.125,3.57 84.46,51.29,1.00 100.0,0.125-0.075,3.02 80.89,42.24,1.52 99.00,0.075-0.045,3.44 77.87,35.99,2.84 97.48,-0.045,74.43 74.43,31.25,94.64 94.64,计,100,计算入料,、,底流、溢流,累计产率,粒级，mm计算入料 底流溢流+1.09.76 1,粒级，,mm,几何粒度,底流含量,占入料,%,计算入料,%,分配率,%,+1.0,1.22,9.76,9.76,100,1-0.5,0.71,0.76,0.76,100,0.5-0.25,0.35,5.02,5.02,100,0.25-0.125,0.18,2.89,3.57,95.7,0.125-0.075,0.1,1.99,3.02,65.89,0.075-0.045,0.06,1.51,3.44,43.9,-0.045,0.02,9.98,74.43,13.41,计,31.91,分配率计算表,粒级，mm几何粒度底流含量计算入料分配率%+1.01.2,试验编号：,试验地点：,试验日期：,设备技术特征,入料特征指标,评定指标和计算参数,名称：斜板沉淀,入料名称：集中水池水,分级效率，,%,：,77.33,型号：直径,8,米,浓度,g/L,：,98,平均分配误差：,2.01,处理量：,入料量，,m3/h:89,通过粒度，,mm,：,0.054,能力：,入料灰分,Ad%,：,43.51,分配粒度，,mm,：,0.065,有效果面积：,底流产率，,%,：,31.91,规定粒度，,mm,：,0.065,溢流产率，,%,：,68.09,水力分级设备工艺性能报告表,试验编号：试验地点：试验日期：设备技术特征入料特征指标评定指,粒级,mm,入料,G,f,%,底流,G,u,%,溢流,G,0,%,1,2,3,4,+1.00,5.63,30.59,0,1-0.5,3.02,2.39,0,0.5-0.25,5.43,15.73,0,0.25-0.125,4.23,9.05,1.00,0.125-0.075,4.63,6.25,1.52,0.075-0.045,4.23,4.74,2.84,-0.045,72.8,31.25,94.64,计,100,100,100,粒级入料底流溢流1234+1.005.6330.5901-0,粒级,mm,底流,G,u,%,占本级 占入料,溢流,G,0,，,%,占本级 占入料,计算入料,G,f,%,1,2 3,4 5,6,+1.0,30.59 9.76,0,9.76,1-0.5,2.39 0.76,0,0.76,0.5-0.25,15.73 5.02,0,5.02,0.25-0.125,9.05 2.89,1.00 0.68,3.57,0.125-0.075,6.25 1.99,1.52 1.03,3.02,0.075-0.045,4.74 1.51,2.84 1.93,3.44,-0.045,31.25 9.98,94.64 64.45,74.43,合计,100.0 31.91,100.0 68.09,100.0,粒级 mm 底流 Gu,%,选择=结果,汇报结束,谢谢观看,！,欢迎提出您的宝贵意见！,选择=结果汇报结束 谢谢观看！,
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