Western Mining Co.

Xining, China

Western Mining Co.

Xining, China

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Tao M.,Central South University | Tao M.,Western Mining Co. | Zhao H.,Central South University | Li X.,Central South University | And 3 more authors.
Geomechanics and Engineering | Year: 2017

An experimental technique for determining the spalling strength of rock-like materials under a high strain rate is developed. It is observed that the spalling strength of a specimen can be determined by only knowing the wavelength, loading peak value and length of the first spallation of an incident wave under a specific loading waveform. Using this method in combination with a split-Hopkinson pressure bar (SHPB) and other experimental devices, the spalling strength of granite specimens under a high strain rate is tested. Comparisons with other experimental results show that the new measuring method can accurately calculate the dynamic tensile strength of rock materials under a high strain rate. © 2017 Techno-Press, Ltd.


News Article | May 23, 2017
Site: www.mining-journal.com

Ruby explorer Mustang Resources (AU:MUS) has appointed former Orbis Gold managing director Peter Spiers to the board as a non-executive director. Spiers, who will start the job immediately, worked for the Western Mining Corporation for 20 years as a geologist and then group manager before it was taken over by BHP-Billiton (AU:BHP) in 2005. He ran Orbis until it was bought out in 2015. Mustang chairman Ian Draymond said Spiers had useful experience on both the operations and sales side of mining. “Peter’s experience in a wide range of technical and commercial roles within the resources industry means he is perfectly placed to assist Mustang as we ramp up ruby production ahead of our first auction in October,” he said. “Peter will be able to provide valuable advice, ranging from exploration and project development through to marketing and commercial issues as we continue work to unlock the value of our outstanding assets.” Spiers joins Draymond, managing director Christiaan Jordaan and Cobus Van Wyk on the Mustang board.


VANCOUVER, BRITISH COLUMBIA--(Marketwired - May 8, 2017) - TerraX Minerals Inc. (TSX VENTURE:TXR)(FRANKFURT:TX0)(OTC PINK:TRXXF) is pleased to announce the appointments of Russell Starr and Rene Carrier as Directors of the Company and of Alan Sexton, P. Geo, as VP Exploration. Mr. Starr is a successful mining entrepreneur having most recently been a director and senior member of the management team of Cayden Resources, which was acquired by Agnico Eagle Mines in 2014. He has over 16 years of experience with global investment banks and independent boutique investment dealers; working as a salesperson, trader and investment banker. He is currently an SVP at Auryn Resources and holds an MBA from the Richard Ivey School of Business and a Master of Economics from the University of Victoria. Mr. Starr stated: "The TerraX team has done an excellent job accumulating a district scale land package neighboring the City of Yellowknife which is on trend with the nearby, past producing high grade Con and Giant Gold mines. TerraX represents an excellent opportunity to deliver significant shareholder value over the next 24 months through high grade gold discoveries which I am excited to be a part of." Mr. Carrier also served as Director of Cayden Resources prior to its acquisition by Agnico Eagle. He has been the President of Euro-American Capital Corporation, a private investment company, since May 1991. He served as Vice-President of Pacific International Securities Inc. where he worked for ten years until 1991. He served as Lead Director of International Royalty Corp. ("IRC") from 2003 to 2010. IRC was a global mineral royalty company engaged in the acquisition and creation of natural resource royalties which was acquired by Royal Gold Inc. in 2010. Joseph Campbell, Chairman and CEO of TerraX, states, "We are very fortunate to have individuals of Russell and Rene's caliber join the Terrax team as we pursue the continued discovery of a high grade Canadian gold district. They bring a depth of successful experience in the financial, marketing and corporate governance areas of our business which will compliment TerraX and its efforts moving forward." Additionally, Mr. Alan Sexton, P. Geo has been appointed as VP Exploration. Much of Al Sexton's career has been with major mining companies, specifically Western Mining Corporation (WMC) where he was the Site Manager for the Meliadine gold project in Nunavut (now owned by Agnico Eagle Mines) over a seven year period from discovery through to pre-feasibility. Mr. Sexton has also been the technical expert on mine development Environmental Impact Assessment reviews on several projects in the Kivalliq Region of Nunavut for the Kivalliq Inuit Association. In addition, he has managed several advanced diamond drilling programs on gold projects throughout the Abitibi Greenstone Belt of northeastern Ontario and authored numerous NI 43-101 compliant mineral resource estimates Mr. Tom Setterfield, one of the original founders of TerraX, has resigned as a director to facilitate the appointment of Mr. Starr and Mr. Carrier to the board. TerraX would like to thank him for the significant role he has played in the development of TerraX and our current success with the Yellowknife City Gold project. We wish him well in his future endeavours. The board of directors of TerraX now consists of Joseph Campbell, Stuart Rogers, Elif Lévesque, Paul Reynolds, Russell Starr and Rene Carrier. Yellowknife City Gold ("YCG") encompasses 418 sq km of contiguous land immediately north and south of the City of Yellowknife in the Northwest Territories. Through a series of acquisitions, TerraX controls one of the six major high-grade gold camps in Canada. Being within 15 km of the City of Yellowknife, the YCG is close to vital infrastructure, including transportation, service providers, hydro-electric power and skilled tradespeople. The YCG lies on the prolific Yellowknife greenstone belt, covering 45 km of strike length along the main mineralized break in the Yellowknife gold district, including the southern and northern extensions of the shear system that hosted the high-grade Con and Giant gold mines. The project area contains multiple shears that are the recognized hosts for gold deposits in the Yellowknife gold district, with innumerable gold showings and recent high grade drill results that serve to indicate the project's potential as a world-class gold district. For more information on the YCG project, please visit our web site at www.terraxminerals.com. On behalf of the Board of Directors, Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release. This news release contains forward-looking information, which involves known and unknown risks, uncertainties and other factors that may cause actual events to differ materially from current expectation. Important factors - including the availability of funds, the results of financing efforts, the completion of due diligence and the results of exploration activities - that could cause actual results to differ materially from the Company's expectations are disclosed in the Company's documents filed from time to time on SEDAR (see www.sedar.com). Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this press release. The company disclaims any intention or obligation, except to the extent required by law, to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.


Bo F.,Jiangxi University of Science and Technology | Bo F.,Western Mining Co. | Xianping L.,Jiangxi University of Science and Technology | Xianping L.,Western Mining Co. | And 2 more authors.
Minerals Engineering | Year: 2015

Abstract The flotation separation of scheelite from calcite using sodium oleate as collector and acidified sodium silicate as depressant has been studied. The results show that sodium oleate has collecting ability to both scheelite and calcite and the flotation separation of scheelite from calcite cannot be realized if collector is used only. The depressant acidified sodium silicate has selective depression effect on calcite and the optimum ratio of sodium silicate to oxalic is 3:1. The use of acidified sodium silicate as depressant can achieve the flotation separation of scheelite from calcite. Infrared studies and zeta potential measurements showed that the pre-adsorption of acidified sodium silicate interferes with the adsorption of sodium oleate on calcite surface while does not interfere with its adsorption on scheelite surface. © 2015 Elsevier Ltd.


Chen P.-P.,Southwest University of Science and Technology | Zhang H.-P.,Southwest University of Science and Technology | Liu H.-D.,Western Mining Co. | Luo X.-G.,Southwest University of Science and Technology | And 3 more authors.
RSC Advances | Year: 2016

A novel material, the biochar of a konjac-based material (KGMB), was prepared conveniently and economically with chemical activation of hydrothermally synthesized carbon nanospheres. Those carbon nanospheres have small sizes and high surface areas due to the high temperature sintering, which could be used for efficient adsorption of heavy metal ions such as Pb2+ and Cd2+. Detailed adsorption behaviors of the optimized biochar including adsorption isotherms and adsorption kinetics were investigated. The results indicated that the adsorption process is spontaneous, exothermic and pseudo-second-order chemisorption. When the temperature was 298 K, the KGMB dose was 5 mg, the initial concentration of Pb2+ and Cd2+ was both 50 mg L-1, the contact time was 24 h and pH of the ion solution was 5.5, the adsorption capacity reached up to 186.56 mg g-1 for Pb2+ and 129.67 mg g-1 for Cd2+, respectively. What's more, the adsorption capacities of Pb2+ and Cd2+ were 69.34 and 71.06 mg g-1, respectively, after adsorption-desorption process happened three times. Comparisons of the adsorption capacity of various adsorbents for Pb2+ and Cd2+, showed that this biochar is superior to many other adsorbents in terms of adsorption capacity and it is a cheap, efficient and accessible biochar. Thus, KGMB is a promising candidate for wastewater treatment. © 2016 The Royal Society of Chemistry.


Zhang H.-P.,Southwest University of Science and Technology | Zhang H.-P.,Western Mining Co. | Luo X.-G.,Southwest University of Science and Technology | Lin X.-Y.,Southwest University of Science and Technology | And 4 more authors.
Desalination | Year: 2016

Carboxymethyl inulin (CMI) is one of the most promising biomass materials for scale inhibition. Its potential applications as a scale inhibitor have attracted much research attention. Understanding the interactions between CMI and calcite surfaces is very important for the design of scale inhibitors. In this study, molecular dynamics simulations were carried out to investigate effects of temperature, CMI chain length, and calcite cleavage on the interactions between CMI and calcite. The results indicate that for the same mass of CMI (with different degrees of polymerization, n = 1, 3, 5), CMI exhibits different abilities in inhibiting the growth of calcite crystal in the order of CMI (n = 5) > CMI (n = 3) >. CMI (n = 1) for calcite (012), (104), 11{combining overline}0, and (110) surfaces. For the calcite (012) surface, the inhibition ability is similar for CMI (n = 3) and CMI (n = 5). For the aqueous environment, comparison of the results of water effects with the results for the CMI-calcite surfaces without water showed a similar trend: the interaction between the CMI and the calcite (012) surface was greater than that of the CMI with the other calcite surfaces (104), (110), and 11{combining overline}0. However, the interactions between the CMI and the other calcite surfaces (104), (110), and 11{combining overline}0 were apparently weakened by the water environment. The results also show that temperature influences the interactions between CMI and calcite surfaces. This study provides important information for CMI potential applications as calcite inhibitor. © 2015 Elsevier B.V.


Fu J.,CAS Guangzhou Institute of Geochemistry | Fu J.,University of Chinese Academy of Sciences | Liang X.,CAS Guangzhou Institute of Geochemistry | Zhou Y.,Guilin University of Technology | And 5 more authors.
Precambrian Research | Year: 2015

Neoproterozoic granitic rocks in the Dakendaban Group are widely distributed throughout the Xitieshan area as the old basement in North Qaidam, NW China. The granitic rocks are composed predominantly of K-feldspar, plagioclase, quartz, muscovite and biotite, with subordinate zircon, garnet, titanite and sillimanite. Two granitic rock samples yielded ages of 930 ± 6. Ma and 918 ± 6. Ma using LA-ICPMS zircon U-Pb dating, which are interpreted as the protolith formation age of the granitic rocks, and reflecting an important Neoproterozoic magmatic event in the Xitieshan area. Geochemical data suggest that the granitic rocks are characterized by high SiO2, K2O, and CaO/Na2O ratios (0.48-1.04), with LREE enrichment and strong Eu negative anomalies (Eu/Eu*=0.44-0.51), and negative anomalies of Nb, Ta, Ti, Zr, and Hf. These rocks have consistent Nd isotope compositions with εNd(t) values ranging from -4.83 to -4.27, while the sample 2011ZJ18-3 yielded the negative εHf(t) values ranging from -6.7 to -1.3, and tDM2(Hf) model ages ranging from 1.9 to 2.2Ga. These geochemical and zircon Lu-Hf isotopic features suggest that the granitic rocks in the Xitieshan area belong to the S-type granite, which were mainly derived from the partial melting of the Paleoproterozoic continental crust material (1.9-2.2Ga) that were predominantly composed of metagreywackes and subordinate metapelitic sources. Based on the regional tectonic reconstruction, we propose that the studied rocks occurred as syn-orogeny on an active continental margin in a compressional environment, which resulted from the Neoproterozoic arc-continent collision and subsequently continent-continent collision, leading to the significant continental growth. The Early Neoproterozoic tectonothermal event in North Qaidam shares many affinities with that of the Tarim block and South China block (Yangtze block) that were associated with the final consolidation of block at the Jinning orogeny, showing an agreement with the formation of Rodinia. The Early Neoproterozoic S-type granitic magmatism in NW China, including the Qaidam and adjacent blocks, is an important episode of continental crust reworking. © 2015 Elsevier B.V.


Jiang H.,Central South University | Xiao Y.,Western Mining Co.
Advanced Materials Research | Year: 2012

In this paper, based on the experiment on pure minerals, namely, galena, sphalerite and pyrite, it is concluded that the appropriate pH range for galena flotation is 8.5-10.5, that for sphalerite flotation is 7-10.5 and for pyrite is 2.5-6.5. For galena, sphalerite and pyrite, butyl xanthate has a better collecting performance than ammonium dibutyl dithiophosphate. Both Na 2SO3 and ZnSO4 have a relatively weak inhibitory effect on galena. As for sphalerite, the mixing of Na 2SO3 and ZnSO4 has a better inhibitory effect than when they are used alone, with the best inhibitory effect obtained when the proportion of Na2SO3 and ZnSO4 is 1:2 and their dosages are respectively 100mg/L and 200mg/L. In zinc flotation, CuSO 4 demonstrates an apparent activating effect on the inhibited sphalerite with its appropriate dosage at 2*10 -4 mol/L. In actual separation and selection of ore, when the grades of lead, zinc and silver in cyanide tailings are respectively 2.41%, 3.77% and 272g/t, a fairly good index is obtained where the Pb concentrate is of a grade of 33.41% with its silver grade of 4051.57g/t and the grade of Zn concentrate is 59.67% with its silver grade of 798.08g/t. © (2012) Trans Tech Publications, Switzerland.


Xu B.,Central South University | Xu B.,Western Mining Co. | Zhong H.,Central South University | Jiang T.,Central South University
Minerals Engineering | Year: 2011

Two-stage countercurrent oxygen pressure acid leaching process was developed to recover valuable metals from Gacun complex copper concentrate. It is unusual that tetrahedrite, whose treatment has been rarely studied, is the primary copper mineral of a concentrate. Most of silver also occurs in the mineral. The optimum operating parameters of the first stage and the second stage were established by conditional tests. Pilot scale tests ran smoothly, and the average overall leaching percentages of copper and zinc were as high as 96.2% and 97.5% respectively while the average overall leaching percentages of Fe, As and Sb as impurities were only 8.5%, 6.5% and 0.8%. Pb and Ag were not dissolved and stayed in the second stage leaching residue. © 2011 Elsevier Ltd. All rights reserved.


Hu J.,University of Science and Technology Beijing | Chen Y.,University of Science and Technology Beijing | Huang Q.,Western Mining Co.
ICSESS 2011 - Proceedings: 2011 IEEE 2nd International Conference on Software Engineering and Service Science | Year: 2011

A synchronization algorithm for FBMC is proposed by combination of CAZAC sequence. Using the CAZAC sequence as the pilot symbols, timing synchronization and frequency synchronization of the FBMC system are realized. Considering the effect of fading on the synchronization, the algorithm combining the CAZAC sequence is rational. Computer simulations verify that the estimation error is about 1e-4 under ordinary signal to noise ratio conditions. © 2011 IEEE.

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