International Journal of Mineral Processing and Extractive Metallurgy

Volume 3, Issue 4, December 2018

  • Research and Application of Shaft Excavation by Deep Hole One-Time Blasting Technology

    Chen Shengyun, Wang Xueming, Zhang Ao, Wu Huajie, Wang Jing, Zheng Lei, Li Fengling

    Issue: Volume 3, Issue 4, December 2018
    Pages: 76-82
    Received: 15 November 2018
    Accepted: 11 December 2018
    Published: 14 January 2019
    DOI: 10.11648/j.ijmpem.20180304.11
    Abstract: In the construction of subway, tunnel, mining and other underground projects, in order to speed up the construction progress, it is often necessary to excavate a shaft first and then dig at both ends of tunnel at the same time. The shaft excavation is a difficult problem in underground engineering. At present, the shaft excavation construction main... Show More
  • Extraction of Valuable Metals from High-Iron Zinc Sulfide Concentrate by Reductive Leaching

    Cunxiong Li, Chang Wei, Zhigan Deng, Fan Zhang, Gang Fan, Xingbin Li, Minting Li

    Issue: Volume 3, Issue 4, December 2018
    Pages: 83-90
    Received: 29 November 2018
    Accepted: 29 December 2018
    Published: 29 January 2019
    DOI: 10.11648/j.ijmpem.20180304.12
    Abstract: This study was conducted as part of the development of a new process to recover valuable metals of zinc, copper and indium from high-iron zinc sulfide concentrate (HIZSC) by the reductive leaching of high-iron zinc neutral leaching residue (HIZNLR) with zinc concentrate precipitation of copper with iron powder, neutralization of free sulfuric acid ... Show More