密地选矿厂磨矿装补球制度研究

为了解决攀钢集团密地选矿厂破碎流程改造后给矿粒度减小而磨机处理量提高不大的问题,通过试验研究找出新给矿粒度下磨机合理的装补球制度,改进了磨矿工艺条件,使磨机处理量提高了12%左右,磨机利用系数提高了13.04%,回收率提高了1.21%～1.52%,较好地解决了选矿厂的生产问题。     

Trends of Chinese RE Hydrogen Storage Alloys

1. Status of Chinese RE Hydrogen Storage Alloys 1. R εt D of RE Hydrogen Storage Alloys in China ABs hydrogen storage materials, taking rare earth mischmetaLs as raw materials, developed rapidly in China in recent years. Today, different countries attach importance to the development and application of the new environmental protection reproducible power sources. To meet the requirement of scaled industrialization of smaLL NiMH batteries and Large NiMH batteries by electric motors, each country has manufactured various La-rich and Ce-rich hydrogen storage aLLoys for high performance NiMH batteries to further improve the performance and reduce the cost of the aLLoys. MeanwhiLe, they are starting R εt D of new generation high capacity hydrogen storage aLLoys.     

湖北省谷城县蒋家沟金矿地质特征与成因浅析

总结了蒋家沟金矿成矿地质背景和矿床地质特征,对矿床成因进行了探讨。蒋家沟金矿赋存于中-上元古界武当岩群变酸性火山岩建造中,受顺层韧性剪切带控制,成矿物质主要来自火山岩围岩,成矿流体来自岩浆水和大气降水,矿床类型属韧性剪切带型。     

金属切削加工喷雾冷却方法

通过对喷雾冷却原理的探索,找到了喷雾冷却适用的场合及方法,同时对冷却介质的消耗量进行计算。通过试验和测试,掌握几种喷雾器的优点,有效地提高了工作效率。实验证明:应用的喷雾冷却方法切实有效,充分说明了喷雾冷却在实际生产中的可行性和可操作性。     

脉冲式旋流澄清净水装置在伯方煤矿矿井水处理中的应用

结合伯方煤矿使用脉冲式旋流澄清净水装置处理矿井水的效果、运行费用、处理前后水质对比等事实,通过与目前国内水处理设施的对比,对脉冲式旋流澄清净水装置工艺流程、设备澄清机理等进行了应用分析。     

Study on sintering technique of NiFe2O4/SiCp used as matrix of inert anodes in aluminium electrolysis

In order to improve deficiencies of NiFe2O4 spinel used as matrix of inert anode in aluminium electrolysis, NiFe2O4/SiCp were prepared by the solid state reaction for the first time. Microstructural changes were observed by scanning electronic microscope and phase was determined with X-ray detector. Effect of sintering temperature and times on density, porosity and microstructure were researched, and the reasons that caused the difference were discussed deeply. At the same time the thermodynamical compatibility of NiFe2O4 and SiC was proved under 1200℃ by DTA.The results showed that the microstructure was more homogeneous when the sintering temperature reached 1 180℃and the density attained their maximum about 6 h sintering. The appropriate sintering technique of NiFe2 O4/SiCw composite materials was 1180℃× 6 h.     

石灰自动控制系统在厂坝铅锌矿选矿生产中的应用

经过两个月的生产运行,厂坝铅锌矿浮选系统中的石灰自动控制系统显示出其明显的优越性和先进性, 使石灰的添加做到了定量、定性、合理,节约了生产成本,提高了生产指标。     

大直径重介旋流器在成庄矿洗选厂的应用实践

介绍了大直径重介旋流器在成庄矿洗选厂的应用情况以及在运行过程中出现的问题,提出了改进措施,同时就今后大直径重介旋流器的应用提出了有关建议及注意事项。     

Brush 1500kVA移动变电站的原理及应用

移动变电站由高压开关箱、干式变压器和低压开关箱组成,它是煤矿综采工作面必备的供、变电设备。其发展方向为大容量、高电压组合,高低压侧的开关箱由于采用了先进的计算机控制技术,使得移动变电站整个系统的检测、控制和保护等性能更加完善和合理。     

石粉垫层的施工与检测

石粉垫层是一种高效经济的地基处理新方法，具有承载力高、压缩性低、施工工艺简单和检测方便等特点，目前已被广泛应用于工程实践。主要介绍了石粉垫层的材料性能、施工工艺和检测方法，并对其力学性质做了初步分析。