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Modes of Liberation in the Coal-Ash-Pyrite System with Particular Emphasis on Detachment
By J. W. Perez
Raw coal will often break intragranularly in either a completely random way or in a differential mode where one species will have a different rate of breakage than another. Locked coal-ash and coal-py
Jan 1, 1988
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Exploratory Investigations in Reactive Current Activated Tip-based Sintering (CATS)
By K. Morsi, S. K. Kassegne, K. S. Moon, A. Numula
"Current Activated Tip-based Sintering (CATS) is a new process for the powder-based manufacturing of macro, micro and possibly nano-scale features and shapes. CATS enables the selective sintering of p
Jan 1, 2011
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Blast Furnace Burdens Preparation from Metallurgical Dusts and Sludges with Composite Binder
By Zhucheng Huang, Yuanbo Zhang, Kecheng Zhang, Guanghui Li, Tao Jiang
"With rapid development of Iron and Steel industry, plenty of metallurgical dusts and sludges are generated, which have not been effectively utilized because of their poor hydrophilicity and bad balla
Jan 1, 2011
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Effect Of Temperature On Reduction Roasting Of Low-Grade Iron Ore After Granulating With Coal
By Zhucheng Huang, Ronghai ZHONG, Tao Jiang, Jun ZOU
The method of reduction roasting and magnetic separation of low-grade, micro- fine disseminated refractory iron ore following granulation with coal produced unexpected success. Pellets of iron ore wit
Jan 1, 2015
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Comparative Leaching of Gold and Silver Ores with Cyanide and Thiourea Solutions
By J. A. Eisele
There is currently much interest in how extraction of gold and silver from ores with acidic thiourea solution compares with extraction using alkaline cyanide solution. Agitation leaching tests were pe
Jan 1, 1989
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Hydrogen-Absorption Properties Of Rare Earth - Transition Metal Compounds
By Teruo Tanabe
The hydrogen-absorbing materials are expected to have the following properties at moderate conditions, (a) a large capacity of hydrogen absorption, (b) the absorption rate of hydrogen is large and (c)
Jan 1, 2006
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Potential Use Of Electron Beam Irradiation For Abatement Of Lean Metallurgical Off-Gas Emissions
By L. Z. Villanueva
An investigation and evaluation has been performed to determine the potential utilization of electron beam irradiation technology for sulfur oxides removal from reduced-S02-strength metallurgical gase
Jan 1, 1999
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An Electrochemical And Chemical Study Of The Leaching Of Copper Sulfides In Acidified Ferrous Sulfate Solutions Sparged With An O2 - SO2 Mixture
By M. J. Perpich
Electrochemical and chemical leaching tests were carried out on chalcocite, covellite and chalcopyrite in acidified iron sulfate solutions sparged with a mixture of O2 - SO2. The gas mixture catalyzed
Jan 1, 1999
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Hydrometallurgical Processing of Copper-Arsenic Concentrates
By Jan Smit
Sulphidic copper concentrates are generally processed by pyrometallurgical means; while oxidative pressure leach processing of such materials has been shown to be technically feasible, there has tradi
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The Effect of Microstructure on the Electrochemical Behavior of Lead-Silver Alloy Anodes during Zinc Electrowinning
By G. St-Amant, V. Cloutier, E. Ghali, S. Jin, G. Houlachi
During the casting of lead-silver anodes, variations in cooling rates result in the formation of an uneven microstructure. The slowly cooled areas (SCA) have a coarser microstructure than that of the
Jan 1, 2000
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Thermodynamics Of Removal Of Tramp Elements From Steel Scrap (Invited) (3246c56f-15a2-4991-ab8f-2582a9a94692)
By Fumitaka Tsukihashi
Increasing amounts of steel scrap are being used as resources for steelmaking. Therefore. there has been a growing interest in the removal of handful tramp elements such as antimony, zinc, tin, arseni
Jan 1, 2003
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Mechanisms Of Strengthening The Reduction Of Fine Hematite In High Silicon Coal-Containing Mini-Pellets By Sodium Additives
By Zhucheng Huang, Ronghai ZHONG, Liangming Wen, Tao Jiang
The reduction roasting-magnetic separation and its strengthening of high silicon coal-containing mini-pellets by sodium additives were researched. The results show that the carbon gasification reactio
Jan 1, 2016
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Microstructural Defects-Strength Relationship of Silicon Nitride Ceramics
By Keizo Uematsu, Satoshi Tanaka, Nozomu Uchida, Ronne Hendrajaya
"The influence of microstructural defects on strength in Si3N4 is reviewed. The presence of cracks, pores and inclusions greatly affects the strength of Si3N4. The micron order crack size and distribu
Jan 1, 2000
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Mineralization Behavior of Fluxes during Iron Ore Sintering
By Luben Xie, Lin Hu, Qiang Wang, Min Gan, Tao Jiang, Wenqi Li, Yi Wang, Xiaohui Fan
"The mineralization behaviors of typical fluxes are studied by investigating the microstructures with optical microscope. The results show that the reactions begin with between iron ore and lime, lime
Jan 1, 2011
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A Critical Review of the Modified Froude Number in Ladle Metallurgy
By K. Krishnapisharody, G. A. Irons
"The modeling of gas-liquid plumes in steelmaking ladles has been the subject of many investigations. In most studies, the “modified” Froude number, based on the momentum of the injected gas, has been
Jan 1, 2012
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The Role Of Lead Smelting At Korea Zinc
By Chang-Young Choi
Korea Zinc commenced zinc production in 1978 with a capacity of 50,000 tpa. Since then, continuous investments have been made and resulted in Korea Zinc now being the biggest zinc and lead producer in
Jan 1, 2003
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Rutile from Ilmenite by Thermal Processing
By M. J. Adam
The U.S. Bureau of Mines has investigated the partitioning of complex minerals to simpler phases using sulfidation reactions for selective extraction of mineral values. This report describes research
Jan 1, 1991
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Enhancing the Pellization of Brazilian Hematite by Adding Boron Bearing Additives
By Wei Yu, Tiejun Chun, Jian Pan, Deqing Zhu
In this paper, improving the pelletization of Brazilian hematite by adding a boron bearing additive was carried out, and the pelletization parameters were also optimized. The mechanism of boron bearin
Jan 1, 2011
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Effect of M-EMS on the Macroscopic Quality of TP347 Heat-Resistant Stainless Steel Billet
By Shu-cai Zhou
"To understand the solidification behavior of austenitic heat-resistant stainless steel (TP34 7) in rotary electromagnetic-field, the influence of electromagnetic stirring in mold (M-EMS) on solidific
Jan 1, 2014
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Selective Removal of Thiophene from Liquid Fuels over Nickel Based Nanocrystalline Zinc Oxide
By Hylton McWhinney, Doanh Tran, Jewel Andrew Gomes, George Irwin, Sameer Pallavkar, Md Islam, David Cocke, Mohammad Rafiqul Islam
"High-performance nickel-based nanocrystalline zinc oxide adsorbents have been prepared adjusting Ni/Zn mol ratio of 1 :5 by thermal decomposition, coprecipitation and sol-gel method for selective ads
Jan 1, 2011