Results 81 to 90 of about 105,325 (306)

Optimization of cut‐hole layout under high in situ stress based on numerical simulation and field tests

Deep Underground Science and Engineering, EarlyView.
This study investigates the blast‐induced rock damage patterns under different cut‐hole layouts and ground stress conditions through numerical simulations and field tests. The findings in this study provide valuable insights for similar underground engineering applications.
Junjie Zhao, Diyuan Li, P. G. Ranjith, Xinxin Lü, Yanliang Li, Xiaoli Su   +5 more
wiley   +1 more source

Depletion patterns and dust evolution in the ISM [PDF]

, 1999
We review the use of elemental depletions in determining the composition of interstellar dust and present a new interpretation of the elemental depletion patterns for the dust forming elements in a range of diffuse cloud types. We discuss this within the
Jones, A. P.
core   +3 more sources

Development of mineralogy applications in mineral processing

European Journal of Mineralogy, 1991
The problem of mineralogical guides in mineral processing is discussed with special references to frontier domains such as direct upgrading, extractive metallurgy, mineral-elastomere composite materials and hydrothermal synthesis. 197 Au Mossbauer spectroscopy allows the analysis of gold and the identification of gold-bearing phases and can provide ...
Yvon, Jacques, Marion, Philippe, Michot, Laurent, Villieras, Frédéric, Wagner, Friedrich Ernst, Friedl, Jοspeh   +5 more
openaire   +1 more source

Resonance‐induced restoration of rock permeability degraded by heavy components of crude oil

Deep Underground Science and Engineering, EarlyView.
Resonance‐induced changes occur in filtration properties of sedimentary rocks in crude paraffin oil flow under acoustic vibrations. Experimental data on (a) pressure drop; (b) permeability; (c) pressure at the rock inlet; and (d) pressure at the rock outlet are presented.
Evgenii Riabokon, Qian Yin, Mikhail Guzev, Mikhail Turbakov, Evgenii Kozhevnikov, Nadezhda Riabokon, Ivan Panteleev   +6 more
wiley   +1 more source

Process Mineralogy Analysis of Copper-zinc Sulfide Ore from the Simao Region, Yunnan Province

Yankuang ceshi, 2014
There are large amounts of refractory copper-zinc polymetallic sulfide ore resources in the Simao region of Yunnan Province. Traditional mineral identification under microscope is difficult to automatically accurately determine copper, zinc and other ...
XIE Hai-yun, YE Qun-Jie, ZHOU Ping, GAO Li-kun, ZHUANG Gu-zhang, TONG Xiong   +5 more
doaj   +2 more sources

Application of Process Minerals Research on a Magnetite Ore in Guazhou County, Gansu Province

Kuangchan zonghe liyong
The type of magnetite ore belongs to the altered gabbro type iron mine in Guazhou County, Gansu Province. The chemical and mineral properties were studied by means of chemical multiple analysis, X-ray fluorescence spectrum analysis, phase analysis ...
Haojia SI, Bailei CHEN, Jiacheng LIU, Wenxuan LI   +3 more
doaj   +1 more source

Process mineralogy of Jinchuan nickel slag in a settlement furnace

工程科学学报, 2017
By chemical composition analysis, X-ray diffraction (XRD), optical microscopy, scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS) and other measurements, the process mineralogy of Jinchuan nickel slag in a settlement furnace was ...
LIU Xiao-min, GAO Shuang-long, LI Jie, KOU Jue, SUN Chun-bao   +4 more
doaj   +1 more source

Spectral, mineralogical, and geochemical variations across Home Plate, Gusev Crater, Mars indicate high and low temperature alteration [PDF]

, 2009
Over the last ~ 3 years in Gusev Crater, Mars, the Spirit rover observed coherent variations in color, mineralogy, and geochemistry across Home Plate, an ~ 80 m-diameter outcrop of basaltic tephra.
Arvidson, R. E., de Souza, P. A., Jr., Des Marais, D. J., Farrand, W. H., Hurowitz, J. A., Johnson, J. R., Lewis, K. W., McCoy, T. J., Ming, D. W., Ruff, S. W., Schmidt, M. E., Schröder, C., Squyres, S. W.   +12 more
core   +1 more source

Rockburst prediction based on data preprocessing and hyperband‐RNN‐DNN

Deep Underground Science and Engineering, EarlyView.
A data preprocessing workflow is proposed to address challenges in rockburst data analysis. Coupled algorithms preprocess the data set, and hyperband optimization is used to enhance RNN performance. Results show that preprocessing improves accuracy, while dense layers enhance model stability and prediction performance.
Yong Fan, Chenxi Yin, Guangdong Yang, Shengyong Ding, Bin Tian   +4 more
wiley   +1 more source

Development of process flowsheet to recover ilmenite by using process mineralogy from lean grade beach placer sand [PDF]

Journal of Mining and Metallurgy. Section A: Mining
This study focuses on the recovery of ilmenite and rutile from low-grade beach sand using a combination of gravity separation, "high-tension separation", and magnetic separation techniques. The analysis shows that the feed sample contains a total of 4.72%
Rao R. B., Mishra B., Singh D.
doaj   +1 more source