石英砂原矿质量的优劣，有害杂质铁、铝的赋存状态及其在各粒级砂矿中的分布，是决定选矿效果的关键。
A key to ore dressing of quartz sands includes rude ores of high or low quality, occurrence and distribution of detrimental impurity such as iron and aluminium in size grades of placer deposits.
本文综合论述灰砂砖生产中砂子颗粒级配的影响、要求和重要作用以及应当进行控制的工艺环节和措施。
The paper describes influence, importance and requirements of sand grain composition and its control methods in the sand-lime brick production.
细粒级尾砂絮凝沉降性能是全尾砂充填应用中的核心问题之一。
The flocculating settling characteristics of fine tailings is one of the key problems in application of filling by all tailings.
介绍了添加絮凝剂的全粒级尾砂充填料强度试验，由试验得出了三个龄期的单轴抗压强度方程。
The strength of unclassified failing fills containing flocculants was tested and equations of uniaxial compressive strength for three curing periods were derived.
实验中采用了正交试验设计和回归分析方法。结果表明，充填尾砂中细粒级含量有可能进一步提高，增加充填尾砂的利用率，充填体性质也有所改进。
The experimental data indicated that it is possible to increase the fines content in the fill, thus utilization coefficient of tailings is raised and properties of fill will be improved.
影响尾砂胶结充填体强度的因素很多。本文就水泥含量、砂浆浓度、尾砂粒级及养护龄期等因素的影响进行了详细的分析…析结果及建议对充填采矿技术人员有一定的参考价值。
The influence to the strength of glued tailing grain fillings come from the content of cement in it, the mortar density, grain degree and curing time is analyzed in detail.
影响尾砂胶结充填体强度的因素很多。本文就水泥含量、砂浆浓度、尾砂粒级及养护龄期等因素的影响进行了详细的分析…析结果及建议对充填采矿技术人员有一定的参考价值。
The influence to the strength of glued tailing grain fillings come from the content of cement in it, the mortar density, grain degree and curing time is analyzed in detail.
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