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Digital Construction and Characterization of Reticulated Porous Microstructures from Sacrificial Templates
By Jason H. Nadler, Jason A. Kulpe, Stephanie J. Lin
"A numerical method has been developed to predict the microstructural characteristics of reticulated metal foam. The porosity of this foam is derived from sacrificial template particles of known parti
Jan 1, 2011
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Phosphate Beneficiation - Challenges And Opportunities
By Jinrong (Patrick) Mang
Three of the most challenging problems in phosphate beneficiation are discussed: flotation efficiency, resource conservation and environmental impact. Some new flotation machines offer the opportunity
Jan 1, 1995
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Hydrogen Sulfide Produced From Sulfate By Biological Reduction For Use In Metallurgical Operations (2d4353c8-3fa9-4aeb-b4ea-243e29870bd7)
By Andre L. De Vegt
Hydrogen sulfide is an expensive chemical used in nickel, zinc and copper mining and metallurgical operations for selective recovery and concentration of metals, from leach water streams, acid plant b
Jan 1, 1998
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Kinetic Studies of Tank Degassing
By G. A. Irons, D. Guo, D. Angheiina
To produce low-carbon (<30 ppm) steel in the tank degassing process, a ladle of steel with an oxidizing slag is placed in a vacuum tank equipped with bottom bubbling. The kinetics of this process are
Jan 1, 2000
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Design And Construction Of The Noranda Converter At The Borne Smelter
By Michel Boisvert
Noranda Metallurgy is presently completing construction of the new Noranda Converter (NCV) at its Home Smelter in Rouyn-Noranda. This capital investment of CDN$56M is the continuation of the Emissions
Jan 1, 1998
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Behaviour of Metallic Minerals in the HBMS concentrator Circuit
By Raymond E. Healy
Circuit samples from the HBMS concentrator were assayed for l5elements, and image analysis was done to determine the modal quantities, grain size distributions and liberations of the minerals. Materia
Jan 1, 1989
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Innovative Procedure For The Characterisation Of Thermo-Mechanical Properties Of Carbon Base Materials Using The Gleeble® 3800 System
By Dany Racine, Daniel Marceau, Denis Laroche, Dmitry Lukovnikov
Carbon base materials play a critical role in the performance of Hall-Héroult cell. The determination of their thermo-physical properties is of primary importance for modeling and designing complete c
Jan 1, 2015
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Correlation of Mineralogy and Trace Element Leaching Behavior in Modified In Situ Spent Shales from Logan Wash, Colorado
By E. J. Peterson
Oil shale retorting induces mineral and chemical reactions to occur on the macroscopic and microscopic levels in the kerogen-bearing marlstone. The nature and extent of the reactions is dependent upon
Jan 1, 1981
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Visualization of Dynamic Recrystallization in Polycrystalline Materials
By P. Peczak
A Monte Carlo simulation technique has been used to study dynamic recrystallization in polycrystals. A continuum microstructure of the polycrystal is modeled employing a discrete lattice. The response
Jan 1, 1993
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Sustainable Development Considerations in Copper Hydrometallurgy
By Krishna Parameswaran
This paper illustrates sustainability considerations in copper hydrometallurgy using examples of practices at ASARCO LLC, an integrated U.S. primary copper producer. Using the classic Brundtland Commi
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Enhancing The Removal Of Sodium And Potassium Of Sinter By Co-Containing Flue Gas Circulation Sintering Process
By Yuanbo Zhang, Ruijun Wang, Qian Li, Zhao Jing, Guanghui Li, Zhengwei Yu, Chen Liu
The high content of sodium and potassium in sinter is harmful for blast furnace ironmaking. Reductive sintering technology can remove more alkali metals than conventional sintering process. In order t
Jan 1, 2016
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The Effect of Phase Decomposition in Quaternary Chromite Spinel on the Extraction of Chromium as Sodium Chromate During Oxidative Alkali Roasting .
By V. D. Tathavadkar
Natural chromite mineral is a solid solution of spinet end members namely: chromite (FeCr2O4), hercynite (FeA1204), magnetite (Fe3O4), magnesio-chromite (MgCr2O4), (MgA12O4), and magnesio-ferrite (MgF
Jan 1, 2001
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Heavy Metals Recovery in Vitrification Process of MSW Residues
By Takuya Shinagawa
After vitrification of the residues from a municipal solid waste incinerator, the vitrified products can be used as a construction material, and the dust can be used as raw materials for the non- ferr
Jan 1, 2002
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Heavy Metals Removal from Small-Arms Firing Ranges (d57464b2-215f-4c60-8f75-d50df113d8b3)
By J. L. Johnson
Remediation of small-arms firing ranges is being investigated by the Naval Civil Engineering Laboratory and the U.S. Bureau of Mines. Scheduled closures of military installations, as well as the manag
Jan 1, 1991
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Chemical Modelling of the Neutralisation Process for Acid Uranium Mill Tailings
By G. H. Khoe
Neutralisation of acid uranium mill tailings with lime or other alkaline materials is usually practised to reduce the dissolved concentration of heavy metals and radio nuclides. Computer modelling of
Jan 1, 1991
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Nonferrous Metal Recovery from Auto Shredder Residue Using Eddy Current Separators
By Adam J. Gesing
Eddy current separators are increasingly used by the auto shredder operators to produce higher grade of nonferrous metal concentrate for recycling. While this increases the unit price of the concentra
Jan 1, 1998
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Finite Element Modeling of Mold Filling in Arbitrarily Shaped Molds
By A. S. Usmani
The flow associated with the pouring of molten metal into moulds has been modelled on the basis of certain simplifying assumptions. A finite element based Navier-Stokes equation solver has been used t
Jan 1, 1992
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Lifetime Prediction of Pneumatic Conveyor Bends With the Aid of Computational Models
By Robert Hanson, Mayur K. Patel
"Pneumatic conveying pipelines are used throughout a variety of industries, from food processing/packing to power generation plants, as an efficient means of transporting materials between storage and
Jan 1, 2001
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Adsorption of the Oxyanions of Arsenic onto Lanthanum Oxide
By A. Rawat
The removal of oxyanions of arsenic present in mine process water and drinking water to a regulatory level is a challenging problem. Recently a patented adsorbent lanthanum oxide has been developed wh
Jan 1, 1998
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Heavy Metals Removal From Small-Arms Firing Ranges
By Jerold L. Johnson
Remediation of small-arms firing ranges is being investigated by the Naval Civil Engineering Laboratory and the U.S. Bureau of Mines. Scheduled closures of military installations, as well as the manag
Jan 1, 1993