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Recuperação Dos Metais Dos CementosBy Sérgio de Azevedo Penchel Júnior
A Votorantim Metais possui dois Smelters de Zn situados no estado de Minas Gerais, Brasil, um na cidade de Três Marias e outro na cidade de Juiz de Fora. A unidade de Juiz de Fora tem se caracterizado
Aug 17, 2017
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Pollutant Levels in Underground Coal Mines Using Diesel Equipment (2f931383-ec7b-46a4-bb83-cfddedd0176a)By Jr. Watts, B. K. Cantrell, D. H. Carlson, K. L. Rubow
"The use of diesel equipment in underground coal mines is controversial because ""whole diesel exhaust"" is regarded as ""a potential occupational carcinogen"" by the National Institute for Occupation
Mar 1, 1992
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IC 9346 Numod And Nutsa: Software For Interactive Acquisition And Analysis Of Time Domain Reflectometry MeasurementsBy Fei-chiu Huang
The principle of time domain reflectometry (TDR) is being used by the U.S. Bureau of Mines to monitor strata displacements induced by mining. The Northwestern University TDR Signature Analysis (NVTSA)
Jan 1, 1993
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Investigating the Influence of Meso-2,3-Dimercaptosuccinic Acid on Thiosulfate Leaching of Bulk Gold ElectrodesBy M Uceda, E Guerra, Y Choi, J L. Shepherd
In this paper we describe the leaching characteristics of pure gold in thiosulfate solutions that contain a known chelator; meso-2,3-dimercaptosuccinic acid (DMSA). The interfacial and chemical charac
Sep 26, 2013
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Influência Das Matérias-primas Ferrosas Na Operação Dos Altos Fornos Da TkcsaBy André Wulff Hirano
A operação estável de um Alto Forno com alta produtividade e baixo consumo de combustíveis, dependente significantemente das matérias-primas ferrosas utilizadas. Diante do cenário cada vez mais desafi
Aug 17, 2017
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Variations in the Chemical Composition of the Oil and Gas Bearing Limestone at the Sioux City Well, Turner Valley, AlbertaBy W. P. Campbell
THE investigation herein described had its beginning in the chemical laboratory of the Department of the Interior, Calgary. After the transfer of the natural resources to the Province of Alberta in 19
Jan 1, 1937
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Coal ReviewBy William Watson
Coal production in the United States in 2010 increased to a level of 960 Mt (1,085.3 million st), according to preliminary data from the U.S. Energy Information Administration (EIA), an increase of 1
Jan 1, 2011
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Estudo Da Influência Da Temperatura Do Eletrodo Na Qualidade Da Solda Para A União De Chapas No Processo De Soldagem Por Resistência Elétrica (Rsw)By Gabriel Mendes de Almeida Carvalho
O processo de soldagem de pontos por resistência elétrica é uma técnica econômica e adequada para a união de chapas, pela alta velocidade e adaptabilidade, torna-se um método amplamente difundido para
Aug 17, 2017
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RI 8999 - Hydrochloric Acid-Oxygen Leaching and Metal Recovery From a Copper-Nickel Bulk Sulfide ConcentrateBy G. A. Smyres
The Bureau of Mines investigated a HCI-02 leaching procedure to recover Cu, Ni, and Co from a low-grade bulk sulfide flotation concentrate prepared from the Duluth gabbro complex. Since the Duluth gab
Jan 1, 1985
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Revisão De Modelagem De Misturas De Carvão Para Predição De Qualidade Do CoqueBy Mariano de Córdova
A operação dos altos-fornos com injeção de carvão pulverizado ou gás natural requer uma alta qualidade do coque. Para um custo mínimo do coque, mantendo a qualidade necessária, a escolha de carvões e
Aug 17, 2017
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Use Of Coal Cleaning To Reduce Air ToxicsBy D. Akers
Many of the trace elements found in coal are associated with mineral matter, making it possible to remove them by physical coal cleaning. As part of work funded by the Electric Power Research Institut
Jan 1, 1992
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Open-Hearth Committee MeetingBy AIME AIME
THE second meeting of 'the Open-Hearth Committee, 'sub-division of the Iron and Steel Committee of this Institute, was held at the Hotel Cleveland, Cleveland, Ohio; on Oct. 13-15. On Oct:
Jan 1, 1925
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RI 5820 Aluminum Fluoride From Wet Hydrogen Fluoride Offgas ? SummaryBy Robert K. Koch
The reactions of alumina and alumina monohydrate with wet hydrogen fluoride gas were studied by the Federal Bureau of Mines to determine the feasibility of producing commercial-grade aluminum fluoride
Jan 1, 1961
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Part VI – June 1968 - Papers - Effects of Static Compressive Loading on the Internal Friction of LiFBy O. P. Quist, S. H. Carpenter
The internal friction of single-crystal LiF has been investigated as a function of crystal orientation, while simultaneously applying a static compressive load. Three different crystal orientations we
Jan 1, 1969
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The Double Thickener Circuit At Gold Fields -Chimney CreekBy J. G. Mansanti
The metallurgical response of a deposit's various ore types usually has a strong impact on the flowsheet design of most mineral processing plants. This impacts the materials handling, equipment s
Jan 1, 1988
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IC 6456 Zirconium. II. Domestic and Foreign DepositsBy E. P. Youngman
Zirconium, formerly distinctly a rare element, is rapidly becom- ing of rather extensive commercial importance. Economic features of the zirconium industry, together with general information regarding
Jun 1, 1931
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Predictive Modelling of CART‑Based Frictional Resistance in Mine Ventilation SystemsBy Yucheng Li, De Huang, Yonghong Liu
Mine frictional resistance is one of the essential parameters of mine ventilation systems, and it is of considerable significance for the prevention and control of mine risks and accident hazards. Fri
Jan 28, 2022
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Preparation of Direct Reduced Iron Powder and Ti-V-Rich Material from Vanadium Titanomagnetite Concentrate by Reduction-Magnetic SeparationBy Fuqiang Zheng, Shuai Wang, Feng Chen, Yufeng Guo, Guanzhou Qiu, Tao Jiang
"The direct reduced iron powder and Ti-V-rich material was prepared from vanadium titanomagnetite concentrate by solid-state reduction-magnetic separation. The result indicated that under the studied
Jan 1, 2018
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RI 8182 Powder Metallurgy of Raney NickelBy Stephen A. Hare, O&apos
Powder metallurgy processing of commercial Raney nickel powders was examined. The typical angular particle shape, in conjuction with aluminum present in a eutectic phase, facilitated interlocking lead
Jan 1, 1976
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Barite - The Frustration Of Long Range PlanningBy Robert E. Jones
The barite industry shares with its associates in the minerals industry the impediments of excessive federal and state regulations. We have learned to exist with the Organic Act of 1976, the Mine Safe
Jan 1, 1983