摘要：为了研究锂渣研磨时间和取代率对锂渣砂浆力学性能的影响,考虑了锂渣研磨时间,取值分别为0、60 min,锂渣等质量取代水泥的比例,分别为0、10%、20%、30%,以及养护龄期7、28 d等因素,设计了不同因素水平下的力学性能试验。结果表明,未经研磨的锂渣掺入,除了养护龄期28d的试件抗折强度大于同等条件下的基准试件抗折强度外,其他情况下,试件的强度均小于同等条件下的基准试件的强度;在养护龄期相同,锂渣取代率相同的条件下,试件强度随研磨时间的增加而增加。在养护龄期28 d,锂渣研磨60 min的条件下,试件强度随锂渣取代率的增加,出现先增加后减小的趋势,当锂渣取代率为20%时,试件强度最大。

摘要：本文系统研究了研磨时间对钛酸铝泥浆的粘度、吸浆速度、烧成后试样的强度、吸水率以及强度的影响规律 ,确定了该材料最佳的研磨时间参数。

摘要：The present work discusses a systematic approach to model grinding parameters of coal in a ball mill. A three level Box–Behnken design combined with response surface methodology using second order model was applied to the experiments done according to the model requirement. Three parameters ball charge (numbers 10–20), coal content (100–200 g) and the grinding time (4–8 min) were chosen for the experiments as well as for the modeling work. Coal fineness is defined as the d80 (80 % passing size). A quadratic model was developed to show the effect of parameters and their interaction with fineness of the product. Three different sizes (4, 1 and 0.65 mm) of Indian coal were used. The model equations for each fraction were developed and different sets of experiments were performed. The predicted values of the fineness of coal were in good agreement with the experimental results (R 2 values of d80 varies between 0.97 and 0.99). Fine size of three different coal sizes were obtained with larger ball charge with less grinding time and less solid content. This work represents the efficient use of response surface methodology and the Box–Behnken design use for grinding of Indian coal.

摘要：目的　用正交实验优选荆芥挥发油 β-环糊精包结工艺的最佳条件。方法　采用正交设计的方法 ,用研磨法制备包结物 ,以包结率为优选指标 ,筛选最佳工艺条件。结果　影响包结效果的主要因素为 β-环糊精的用量。结论　最佳工艺条件为油与 β-环糊精之比为 1∶ 6 (m L· g- 1 ) β-环糊精与水之比为 1∶ 3(g/ m L) ,研磨时间为

摘要：铜精矿样品制备粒度是化验分析准确度的重要指标,使用普通制样粉碎机研磨精矿样品,研磨时间不宜过长,且粒度难以达到符合分析的要求。对棒磨机制备铜精矿样品开展实验研究,研究不同的研磨时间对精矿样品粒度、品质的影响情况。通过实验,确定了不同品级的铜精矿在确保样品粒度满足分析要求且品质不发生变化前提下的最佳研磨时间;同时发现,采用棒磨机研磨铜精矿,其粒度能达到比分析要求更细的粒度,大大提高了铜精矿样品制备的效率和质量。