Results 31 to 40 of about 390,267 (306)
The importance of mineralogical knowledge in the sustainability of artisanal gold mining: a mid-south Peru case [PDF]
, 2019 Mineralogy and gold processing techniques from several mining areas of the Nazca-Ocoña gold belt, Mid-South Peru, were investigated to assess the efficiency of gold extraction methods in relation to their mineralogy.
Alfonso Abella, María Pura +7 more
core +2 more sources
Research status of refractory treatment technology of carbon-bearing gold ores [PDF]
E3S Web of ConferencesCarbon-bearing gold ore is one of the important refractory gold resources, which can not be effectively utilized by conventional treatment methods. In this paper, the main reasons for the difficult treatment of carbon-containing gold ore, the material ...
Zhang Xiaoguang +3 more
doaj +1 more source
Advances in Civil Engineering, 2021 Backfill mining methods are widely used in metal mines. The boundary part of the backfill has a direct effect on the local stability in mining engineering. The distribution of stress on the boundary part of the backfill and surrounding rock had their own
Rong Lu +5 more
doaj +1 more source
Advances in Civil EngineeringA series of true triaxial compression (TTC) tests was conducted on granite specimens to investigate their fracture behavior. The granite was sampled from a 1500-m-deep exploration borehole located on the Sanshandao gold field in Shandong Province, China,
Huanxin Liu +4 more
doaj +1 more source
Experimental Study on Activated Sulfur Selection from High Alkalinity Lead Zinc Flotation Tailings [PDF]
E3S Web of ConferencesThis article takes the flotation tailings of a high sulfur lead-zinc mine in Inner Mongolia as the research object. XRD and BPMA automatic process mineralogical analysis systems are used to analyze the mineral composition of the tailings, and ...
Gao Tengyue +3 more
doaj +1 more source
Advanced Functional Materials, EarlyView.This study advances our understanding of aortic valve stenosis by capturing spatially resolved chemical and structural changes at the nanoscale. The findings highlight the potential of combined Raman and electron microscopy for understanding calcification mechanisms across diverse tissue types.
Robin H. M. Van der Meijden +11 more
wiley +1 more source
Frontiers in Environmental Science, 2023 Split-set bolt is widely used in supporting stope and roadway surrounding rock in metal mines. The maximum pull-out force generated by the relative slippage between the anchor bolt and the drill hole can serve as an indicator for assessing its anchoring ...
Yingjie Hao +10 more
doaj +1 more source
Eksternalitas Pertambangan Emas Rakyat di Kabupaten Buru Maluku [PDF]
, 2014 Gold mining carried out in the Buru Regency, “Gunung Botak”, has been held since 2012. The mining regulations are governed by local governments. The aims of this research were: 1) to identify and estimate the cost of gold mining transactions, 2) to ...
Anna, Z. (Zuzy) +2 more
core +2 more sources
Advanced Functional Materials, EarlyView.Interphase chemistry governs the stability of multivalent metal batteries. We summarize state‐of‐the‐art developments in calcium and magnesium metal batteries by focusing on the correlation among electrolytes, interphase layers, and the electrochemical performance of corresponding metal anodes.
Huijun Lin +4 more
wiley +1 more source
Study on Comprehensive Recovery and Utilization of a Low-grade Gold-Copper Ore in Fujian
Kuangchan zonghe liyong, 2022 A low-grade gold-copper mixed ore in Fujian contains Au 0.36 g/t, Cu 0.29%, Ag 7.4 g/t, S 4.02%. If it is directly cyanidized, copper enters the gold cyanide leaching system, not only cannot be recovered, It will also worsen the gold selection index and ...
Tao Yue +4 more
doaj +1 more source