阐述了当前选煤工艺中粗煤泥的分选概况,指出在正常工况下,重介全级入选工艺或重介分级入选粗煤泥工艺分选下限均可达到0.25 m m甚至达到0.125 mm。在此基础上,明确了粗精煤回收对选煤厂生产的影响。针对实际生产中粗精煤回收工艺存在...阐述了当前选煤工艺中粗煤泥的分选概况,指出在正常工况下,重介全级入选工艺或重介分级入选粗煤泥工艺分选下限均可达到0.25 m m甚至达到0.125 mm。在此基础上,明确了粗精煤回收对选煤厂生产的影响。针对实际生产中粗精煤回收工艺存在的问题,通过对环节设备—旋流器和脱水筛的结构进行优化改进,提出了一种以“强化旋流器分级浓缩+电磁复式筛强化分级脱水”为核心的粗精煤分级工艺,经现场应用效果良好。展开更多
Stress-strength model is a basic and important tool for reliability analysis.There are few methods to assess the confidence limit of interference reliability when the distribution parameters of stress and strength are...Stress-strength model is a basic and important tool for reliability analysis.There are few methods to assess the confidence limit of interference reliability when the distribution parameters of stress and strength are all unknown.A new assessment method of interference reliability is proposed and the estimates of the distribution parameters are accordingly given.The lower confidence limit of interference reliability with given confidence can be obtained with the method even though the parameters are all unknown.Simulation studies and an engineering application are conducted to validate the method,which suggest that the method provides precise estimates even for sample size of approximately.展开更多
文摘阐述了当前选煤工艺中粗煤泥的分选概况,指出在正常工况下,重介全级入选工艺或重介分级入选粗煤泥工艺分选下限均可达到0.25 m m甚至达到0.125 mm。在此基础上,明确了粗精煤回收对选煤厂生产的影响。针对实际生产中粗精煤回收工艺存在的问题,通过对环节设备—旋流器和脱水筛的结构进行优化改进,提出了一种以“强化旋流器分级浓缩+电磁复式筛强化分级脱水”为核心的粗精煤分级工艺,经现场应用效果良好。
文摘Stress-strength model is a basic and important tool for reliability analysis.There are few methods to assess the confidence limit of interference reliability when the distribution parameters of stress and strength are all unknown.A new assessment method of interference reliability is proposed and the estimates of the distribution parameters are accordingly given.The lower confidence limit of interference reliability with given confidence can be obtained with the method even though the parameters are all unknown.Simulation studies and an engineering application are conducted to validate the method,which suggest that the method provides precise estimates even for sample size of approximately.
