金精矿超声波强化硝酸预氧化提金研究

本文提出了常压低温下对原生金矿预处量的一种新方法，对于含硫较高的原生矿，采用超声波强化硝酸预氧化处理工艺，处理后的氧化渣采用氰化浸出，金的浸出率同硝酸直接氧化后氰化浸出相比。有显著提高，该方法氧化时间短，对设备要求低，具有一定的生产价值。     

CONFINING PRESSURE EFFECT ON ACOUSTIC EMISSIONS IN ROCK FAILURE

Based on the phenomenon that acoustic emissions (AE) generated by rock massincreas uddenly because of underground excavation, time sequence of AE rate in rock failurehas been discussed by using statistical damage theory. It has been demonstrated that how theinfluence of confining pressure on the deformation behavior and AE characteristics in rocks can beinferred from a simple mechanics model. The results show that loading confining pressure sharplybrings out increasing of AE. On the other hand, few AE emits when confining pressure is loadedsharply, and AE occurs again when axial pressure keeps on increasing. These results have beenwell simulated with computer and show close correspondence with directly measured curves“ inexperiments.     

俄罗斯诺里尔斯克选矿厂选矿新工艺的创立

由于近年来塔尔纳赫斯克选矿厂的生产能力已达到能够处理塔尔纳赫斯克矿山开采的全部富的致密块状硫化矿石。所以，诺尔斯克选矿厂多余的生产能力可以用来分别处理过去同时开采的浸染状矿石和铜矿石，以及处理过去堆存的磁黄铁矿精矿，处理浸染状矿石除采用常规的浮选工艺外还采用闪速浮选和从浮选尾矿中重选回收贵金属；在铜矿石处理中采用正优先浮选流程；在处理堆存的磁黄铁矿精矿时采用贵金属重选预选和给矿磨矿擦洗。     

Stability of xanthates in sulfite media

Journal of Mining Science -     

建筑施工企业如何在工程施工阶段进行成本控制

建筑施工企业在工程建设中实行施工项目成本管理是企业生存和发展的基础和核心,在施工阶段搞好成本控制．达到增收节支的目的是项目经营活动中更为重要的环节，将对这一问题进行论述，以便在企业的生产经营中起指导作用。     

Interaction of Bacillus polymyxa with some oxide minerals with reference to mineral beneficiation and environmental control

Interaction of Bacillus polymyxa with calcite, hematite, corundum and quartz resulted in significant surface chemical changes not only of the cells but also in the minerals. Both the cell surfaces as well as quartz particles were rendered more hydrophobic after mutual interaction, whilst the rest of the minerals exhibited enhanced hydrophilicity after interaction with the bacteria. The bacteria were also observed to be capable of dissolving calcite, hematite and corundum and biosorbing the dissolved metal ions to varying extents. An excess of polysaccharides could be observed on biotreated calcite, hematite and corundum while the predominance of a protein-based metabolic product was evident on quartz surfaces. The utility of bioprocessing in the beneficiation of the above minerals through bioflotation and bioflocculation is demonstrated.     

清水泵间接驱动竖井液力提升技术模拟研究

工业过程的连续化是提高效率,降低消耗和改善作业环境的有效技术途径,也是其工艺技术水平发展的重要标志.清水泵间接驱动竖井液力提升技术借鉴相关领域的已有技术成就,并结合竖井提升的功能要求综合设计而成的一个全新的提升方案.有别于国外在矿山竖井液力管道连续提升的破磨造浆-浆泵(均质两相流)-固液分离的技术思路,对妨碍其大规模工业应用的提升能力(尤其是提升高度)、设备磨损、增压给矿及浓度控制、能耗等一系列技术难题均有所突破.模拟试验证明了这一创新方案的可行性.