Gawenda Tomasz, Surowiak Agnieszka, Krawczykowska Aldona, Stempkowska Agata, Niedoba Tomasz
Faculty of Civil Engineering and Resources Management, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland.
Materials (Basel). 2022 Jun 7;15(12):4046. doi: 10.3390/ma15124046.
This article presents an analysis of separation results in a specially designed and activated light fraction separator used to remove impurities from mineral aggregates. Laboratory tests conducted on a quarter-technical scale involved performing experiments to ascertain the scope for adjusting the variable settings of the separator operating parameters. These include the frequency and amplitude of pulsation, the height of the heavy-product reception threshold, the size of water flow and variations in the grain size and shape of the feed. During the experiments, the degrees of chalcedonite and dolomite grain purification were studied within the range of grain size for the feed: (2.0-4.0 mm for small grains, 8.0-16.0 for coarse grains and 2.0-16.0 mm for a wide range of grain sizes). The effects of the separator were assessed based on the amount of organic impurities in each heavy product. In all experiments, very good results were obtained, because the percentage of impurities in the product after separation was below 1% in accordance with the assumed technological standard assumption. Regarding the obtained content of light impurities with the separator set to optimal operating parameters, the percentage of light impurities in the product content was reduced to below 0.1%, which meets the guidelines described according to applicable standards. Multi-variant analysis allowed the optimal operating ranges of the separator to be determined, producing refined aggregate in terms of grain size and shape. The final results were also linked to the performance of the device, and its model dependencies were also determined.
本文介绍了一种专门设计并激活的轻质物料分离器的分离结果分析，该分离器用于去除矿物骨料中的杂质。在四分之一工业规模上进行的实验室测试包括进行实验，以确定调整分离器操作参数可变设置的范围。这些参数包括脉动频率和幅度、重产物接收阈值高度、水流大小以及进料粒度和形状的变化。在实验过程中，研究了在进料粒度范围内玉髓和白云石颗粒的提纯程度：（小颗粒为2.0 - 4.0毫米，粗颗粒为8.0 - 16.0毫米，宽粒度范围为2.0 - 16.0毫米）。根据每种重产物中有机杂质的含量评估分离器的效果。在所有实验中都获得了非常好的结果，因为根据假定的工艺标准假设，分离后产品中的杂质百分比低于1%。关于在分离器设置为最佳操作参数时获得的轻质杂质含量，产品含量中的轻质杂质百分比降低到低于0.1%，这符合适用标准中描述的指导方针。多变量分析确定了分离器的最佳操作范围，在粒度和形状方面生产出精制骨料。最终结果还与设备性能相关联，并且还确定了其模型相关性。
