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The Effect of High Gas Flowrates On the Performance of a Counter-Current Reaction' Launder (CCRL) Process for Metal Refining
By K. Narayana Swamy
Experimental results of 3-phase mixing in a physical model of a CCRL for metals refining, at high levels of bottom gas injection (up to a superfIcial gas velocity (Us) of 12.5 cm/min), are presented.
Jan 1, 1996
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Solidification of EAF Stainless Steel Dust
By Liyuan Chai, Bing Peng, Ji Peng, Di Yu
"Electric arc furnace (EAF) stainless steel dust has been classified as a hazardous waste by various government regulatory agencies as it releases heavy metals to environment. The solidification of EA
Jan 1, 2012
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Maintaining High Efficiencies While Increasing Current Densities
By F. Begazo
The most common approach to increase production in copper refineries is to increase current densities. However, if these increases are not well thought out beforehand and are not properly and effectiv
Jan 1, 1999
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Optimization of the Reverb Furnace Slag Composition in the RTB BOR Serbia
By Natasa Mitevska
In order to ensure the minimal copper concentration in the reverb furnace slag, the graphical optimization method is used and the optimal slag composition of the reverberatory furnaces No.1 and No.2 i
Jan 1, 2003
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Thermodynamic Analysis and its Application to Preparing Sm-Fe Alloy Oxide Precursor by Wet-Chemical Coprecipitation
By Xue Ping
Sm2Fe17 alloy is an important precursor for the preparation of Sm2Fe17Nx magnet, which possesses a higher Curie temperature, larger anisotropy field, better resistance to oxidation and thermal stabili
Jan 1, 2008
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Current And Suggested Focus On Sustainability In Pyrometallurgy
By P. J. Mackey, J. B. See, D. G. C. Robertson
The production of iron and steel and non-ferrous metals by pyrometallurgical processes will remain a critical element in meeting the demand for materials in both developed and developing nations. Give
Jan 1, 2014
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Solvent Extraction Of Rare Earths Using Pulse Columns
By H. Y. Cheng
A pulse column solvent extraction system was evaluated as an alternative to mixer-settlers for the separation and purification of rare earths. The column tested had an inside diameter of 44.5 mm and h
Jan 1, 1992
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Distribution Of Precious Metals (Au, Pt, Pd, Rh And Ru) Between Copper Matte And Iron- Silicate Slag At 1573 K
By Hector M. Henao
There is an increasing trend in the copper smelters to recycle electronic materials, which contain relatively high concentration of precious metals. As a consequence, the amount of precious metals los
Jan 1, 2006
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The Temperature Behavior And Microwave Thermo Gravimetric Analysis Characteristic Of Ammonium Paratungstate In A Microwave Field
By Cheng Fang, Zhou Lie-xing, Peng Jin-hui, Guo Sheng-hui
This article discusses the behavior of temperature and microwave thermo gravimetric analysis characteristic of ammonium paratungstate in a microwave field. Experimental results show that when 12g of m
Jan 1, 2015
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Internal Friction and Three Dimensional Atom Probe Analysis of Bake Hardening Phenomenon in Ultra-Low Carbon Bake Hardening Steel
By Lin Li, Wen Shi, Hua Wang
"Specimens of the ultra-low carbon bake hardening steel were soaked for 1 min to 5 min, and then cooled by water quenching. The internal friction experiments were carried out to detect the spectra of
Jan 1, 2011
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Recovery Of Vanadium From A High Ca/V Ratio Vanadium Slag Using Sodium Roasting And Ammonia Leaching
By Xue Sun, Dengfu Chen, Yuting Chen, Mujun Long, Song Xu, Helin Fan
In order to seek an effective extraction process for vanadium, the recovery of vanadium from a high Ca/V ratio vanadium slag was studied by sodium roasting and ammonia leaching. In the present paper,
Jan 1, 2014
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A Rotary Arc Furnace For Aluminum Dross Processing
By Michel G. Drouet
Dross, a major by-product of all processes involving molten aluminum, forms at the surface of the molten metal as the latter reacts with the furnace atmosphere. It generally represents 1 to 5 wt% of t
Jan 1, 1995
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Native Metals
By Fathi Habashi
While it is commonly known that the precious metals and to some extent copper occur in the native state, it is less known that mercury, iron, nickel, and cobalt do occur also in the native state; the
Jan 1, 1993
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Corrosion Testing Of Chrome-Free Refractories For Copper Production Furnaces
By M. D. Crites
As part of a multi-year program for assessing the viability of chrome-free refractories in copper smelting, converting and refining furnaces, dynamic corrosion tests have been conducted on a series of
Jan 1, 1999
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Sulfur Fixation at High Temperature Within the Copper Smelting Process
By N. A. Warner
Fundamental studies on the reaction of limestone or dolomite at high temperature with S02 are extended to the realm of large scale primary copper smelting. Whereas flue gas desulfurisation in the elec
Jan 1, 1996
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Advances in Bromide Gold Leaching Technology
By A. Dadgar
The adsorption kinetics of AuBr4 on Dowex ® -21K ion-exchange resin were studied and found to be independent of the initial gold, bromine, and base metals concentrations. A commercially-available und
Jan 1, 1992
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Modeling of Powder-in-Tube Wire Drawing Process for Manufacture of High Temperature Superconducting Wires
By Murali Thirukkonda, Rahul Shah, Srinivas Tangrila, Shankar Rachakonda, Jan Kajuch, Arthur Gurson
"High-temperature superconductors have potential for a variety of applications such as power generators, superconducting magnets for mine sweepers or ship propulsion motors, and magnetic levitation tr
Jan 1, 1994
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Application of Natural Polymers for Removal of Heavy Metals from Aqueous Solutions: Sorption of Copper by the Modified Chitosan
By Pesic. Batric
A novel chitosan-pyridoxal-epichlorohydrin was synthesized and evaluated in our laboratories. The evaluation was achieved by performing kinetic and equilibrium studies of copper sorption. The paramete
Jan 1, 1994
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Optimizing Cyanidation Parameters For Processing Of Blended Fort Knox And True North Ores At The Fort Knox Mine
By John Hollow
The Fort Knox Mine is an open-pit operation, located in Alaska, which started commercial production in March 1997. A conventional Mill processes 38,000 tpd of a low grade (1.0 g/t Au) free milling go
Jan 1, 2003
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Hydrothermal Synthesis and Its Reaction Mechanism of K Type Zeolite From Coal Fly Ash Using KOH Solution
By Norihiro Murayarna
Hydrothermal synthesis of K type zeolite was carried out by using coal fly ash as a raw material and KOH as an alkali source. The change in various physical properties of the obtained zeolite, such as
Jan 1, 2002