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Based on the modified Rosin — Rammler — Bennett expression and the image analysis, the relationship of the shovel productivity
in the Gol-e-Gihar mine and the granulometric composition of rocks is obtained. It is shown that when percentage of crushed
rock oversizes increases, the shovel productivity decreases.
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Translated fron Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 2, pp. 97–104, March–April, 2005. 相似文献
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齐大山矿岩石可移式破碎系统的成功移位,标志着我国在可移式破碎系统的使用方面上了一个新台阶,这势必促进可移式破碎系统在我国大型露天矿的使用及矿山企业的发展. 相似文献
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Hosein Heidari-Nejad Mehdi Zarei Broder J. Merkel 《Mine Water and the Environment》2017,36(4):583-596
The Golgohar mine produces iron ore from an open pit in south-central Iran that is now more than 100 m below the water table, and dewatering has not solved the mine’s water seepage problem. Previous studies had reported that Kheirabad (Sirjan) Playa, 13 km north of the mine, was the most probable groundwater source. A combination of geological, hydrogeological, hydrochemical, and isotopic techniques were used to evaluate the hydraulic connectivity between the mine and the lake, and to characterize the probable water sources. Thirty-two surface and groundwater samples were collected and analyzed for major and minor (Li, B, and Br) constituents. Ten water samples were analyzed for oxygen-18 and deuterium and three samples were analyzed for tritium. The results indicated that impermeable formations and very low-permeability alluvial deposits lie between lake and the pit. In addition, the chemical and isotopic signatures of the two water sources indicated different origins. Inverse geochemical modeling and the mine water’s isotopic signatures suggest that the water is coming from the surrounding alluvial aquifer, or is deep basin water from within the fractured bedrock, or a mixture of the two. 相似文献
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介绍了小官庄铁矿二期工程向下延伸200 m后水文地质条件发生的变化,分析了现阶段水文地质条件特征,并提出了相应的预防措施。 相似文献
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针对庙沟铁矿露天矿开采接近尾声、采场空间狭小、矿岩剥离工作受到限制、岩石混入量增加等问题,以"多碎少磨"的选矿理念,在矿石破碎阶段将混入的废石提前甩出,减少选磨矿环节压力,提高入磨原矿品位。 相似文献
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齐大山铁矿石选矿技术研究综合评述 总被引:1,自引:3,他引:1
齐大山铁矿是我国特大型红铁矿铁矿山,在我国铁矿选矿技术研究中占有很重要的地位.介绍了齐大山铁矿石选矿技术基础研究情况和连续磨矿、弱磁选-强磁选-阴离子反浮选等4种工艺对比工业试验情况,分析了工业上应用的阶段磨矿、重选-磁选-阴离子反浮选等5种工艺流程选别齐大山铁矿石选矿工艺流程的特点,提出今后改进齐大山铁矿石选别指标的建议. 相似文献
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在深入分析庙沟铁矿选矿流程存在问题的基础上,提出应用全自动淘洗磁选机及德瑞克细筛作为核心设备,对原有流程进行改造的具体方案,深入分析流程改造方案实施后的生产指标与经济效益. 相似文献
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杏山铁矿床属于鞍山式沉积变质贫铁矿。由于受F9断层破坏,矿床被分割为大杏山和小杏山两部分。根据生产勘探及倒段工程揭露情况,按照设计推荐的岩石错动角,小杏山端部矿体如果继续沿用崩落法开采,会导致地表塌落范围超出杏山现有购地界线。为回收这部分采矿证内的矿石资源,从安全环保、防止地表塌陷的角度考虑,对塌落区外矿体充填开采进行研究。 相似文献
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根据弓长岭井下铁矿开采现状、开拓运输系统工程和编制矿山开采规划原则,对井下铁矿3个采区进行开采规划,从而实现从2007年的205万t逐年递增到2014年420万t的总体规模. 相似文献
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马坑铁矿中矿段的生产勘探 总被引:1,自引:0,他引:1
马坑矿业已成为我国最大的单体井下磁铁矿。经过近几年马坑铁矿首采矿段的生产实践,通过详细的生产勘探,探采结合,利用开拓、采切、回采工程,对矿体进行了详细的二次圈定,进一步加深了对矿体的认识。为降本增效,介绍了马坑铁矿中矿段的生产勘探,包括勘探网度、影响因素、探采结合,合理优化等,进一步加强生产勘探工作,达到高效合理利用矿产资源的目的。 相似文献
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2010年7月,世界钢铁协会<改善钢铁原料利用项目>的委员们一行17人考察了瑞典的基律纳铁矿、选矿厂和球团厂.考察期间的一些采选技术对我们今后的设计工作有一定的指导意义. 相似文献
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Precipitation, surface, and groundwater samples were collected during 2009–2010 in the Sarcheshmeh copper mine drainage basin, Kerman Province, Iran. Groundwater samples were collected from both shallow and deep aquifers. All of the samples were analyzed for stable isotopes, deuterium (2H), and oxygen-18 (18O), and some were analyzed for tritium (3H). The results show a more restricted range of isotopic composition in groundwater samples than in precipitation samples based on the isotopic composition of the precipitation. The isotopic composition of surface and groundwater samples plot to the right of the local meteoric water line of the Sarcheshmeh area and around the evaporation line, indicating that the groundwater within the study area originates from meteoric water that has undergone secondary evaporation before or during recharge. Tritium was below the detection limit in the deep groundwater samples while shallow groundwater samples had tritium concentrations between 1.2 and 1.7 TU, which indicates a longer residence time for deep groundwater. 相似文献
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为解决无底柱崩落采矿法低贫化放矿工艺实施存在的问题,开展了低贫化放矿工艺的应用途径的分析与试验,提出了对矿山正常生产影响最小的全矿整体过渡的实施方式,应用较为成功。 相似文献
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