R.P. Chhabra, Indian Institute of Technology, Kanpur, India
Y. Du, Central South University Changsha, Hunan, China
F. Habashi, Laval University, Quebec City, Canada
J. Lamut, Naravoslovnotehniška fakulteta, Univerza v Ljubljni, Slovenia
I. Mihajlović, University of Belgrade, Technical Faculty Bor, Serbia
S. Seetharaman, Royal Institute of Technology, Stockholm, Sweden
K.H. Spitzer, Process Metallurgy, Technische Universität Clausthal, Germany
A. Watson, The University of Leeds, UK

Title: Recent trends in Extractive metallurgy

Abstract

While pyrometallurgical processes are old technology and were the dominant and logical route used to treat sulfide concentrates they are now challenged by new hydrometallurgical processes. In these new processes there have been attempts in the past few years to avoid using...

Title: Utilization of zinc in powders from electrical arc furnaces in steel production

Abstract

The processing of waste powders from steel production in electric arc furnaces is a world problem. The presence of Fe, Zn, Cd, Pb, etc. in the powders makes them a valuable source for these metals. Zinc is the metal that is most often utilized, which leads to reduction of environmental pollution...

Title: The influence of the silicate slag composition on copper losses during smelting of the sulfide concetrates

Abstract

This paper presents the results of multi-linear regression analysis (MLRA) of the slag composition (SiO₂, FeO, Fe₃O₄, CaO, Al₂O₃) and the content of copper in the matte on resulting copper content in the slag during smelting of the sulfide concentrates in the reverberatory furnace...

Title: Thermal behavior of Zefreh dolomite Mine (Central Iran)

Abstract

Dolomite has a large amounts of MgO and is an important raw materials for steel, iron and refractory industries. In this paper thermal behavior of Zefreh dolomite at various temperatures was studied by differential thermal analysis (DTA), Thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT- IR) and powder X-ray diffraction (XRD) techniques....

Title: Leach-SX-EW copper revalorization from overburden of abandoned copper mine Cerovo, Eastern Serbia

Abstract

Hydrometallurgical processes for copper revalorization from overburden of abandoned mine Cerovo in Eastern Serbia were studied. Paper contain results of percolation leaching tests, performed with acidic mine waters accumulated in the bottom of the former open pit, followed by solvent extraction (SX) and electrowinning (EW) processes on achieved copper pregnant leach solutions...

Title: Kinetics and mechanism of arsenic sulfides oxidation

Abstract

The kinetics of oxidation process of realgar and orpiment natural mineral mixture was studied under non-isothermal conditions. The proposed reaction mechanism and chemical transformation investigated by SEM-EDX, XRD and thermal analysis, are discussed...

Title: Impact of the increased active surface of the platinum catalyst on the total ammonia recovery coefficient

Abstract

In order to increase the active surface of platinum catalysts for ammonia oxidation and on the basis of theoretic considerations and tests in industrial environment, we have finally decided on their specific design. Efficiency on the newly designed...

Title: Examining the surfaces in used platinum catalysts

Abstract

For the purpose of finding more advanced platinum catalyst manufacturing technologies and achieving a higher degree of ammonia oxidation, metallographic characterization has been done on the surface of catalyst gauzes and catalyst ...

Title: Thermodynamic modeling of the Al-K system

Abstract

A thermodynamic modeling for the Al−K system is conducted. The thermodynamic parameters for liquid, (Al), and (K) are evaluated by using the experimental phase diagram data from the literature. The gas phase is described with an ideal gas model...

Title: Thermodynamic properties of the liquid Bi-Cu-Sn Lead-free solder alloys

Abstract

The electromotive force measurement method was employed to determine the thermodynamic properties of liquid Bi-Cu-Sn alloys using solid electrolyte galvanic cells as shown below:
Kanthal+Re, Bi-Cu-Sn, SnO₂ | Yttria Stabilized Zirconia | air, Pt,  Po₂=0.21 atm...

Title: Electrochemical synthesis and characterization of BaB₆ from molten melt

Abstract

Barium hexaboride (BaB₆) crystals were electrochemically synthesized using molten salt technique. Barium carbonate (BaCO₃) and boron trioxide (B₂O₃) was used as reactants. Lithium fluoride (LiF) was used as the supporting electrolyte. The molten electrolyte consisted of 50 wt % BaCO₃ and B₂O₃ with different stiochiometric ratios of Ba and...

Title: Structural and phase composition modification of nanocrystalline Nd₁₄Fe₇₉B₇ alloy during thermomagnetic measurements

Abstract

Changes in the microstructure parameters, phase composition and magnetic properties of rapid quenched Nd-rich Nd₁₄Fe₇₉B₇ alloy caused by thermomagnetic measurement (TM) were studied using XRD methods of phase analysis, crystallite size and...

Title: Upward heat flow analysis in basin type solar still

Abstract

The present work aims at estimating radiative, convective and evaporative heat transfer co-efficient for upward heat flow in a conventional basin type solar still for different water temperatures, ambient temperatures and wind speeds. The glass temperature for given water temperature and...

Title: Synthesis of Iron oxide from metallurgical wastes

Abstract

Waste materials like slags, mill scale and lean ores from steel plants were chemically beneficiated.  The alpha Iron oxide obtained was subjected to solvent extraction and then converted to gamma iron oxide by combustion method.  The raw materials and the as synthesized gamma iron oxide were...

Title: On the surface tension of methaphosphate melts studied by the ring method

Abstract

Surface tensions of the МPO₃ (M = Rb, Cs) melts were determined from high temperature experiments performed under Ar atmosphere, by means of the ring method using a Du Noüy tensiometer. The surface tension data were fitted by linear regression at...

Author: Fathi Habashi
Laval University,
Quebec City, Canada, 2009.

Science, technology and society,
ISBN 978-9222686-01-2
Chemistry and metallurgy in the Great Empires,
ISBN 978-2-922686-03-6
Gold history, metallurgy, culture,
ISBN 978-2-922686-13-5
Researches on copper, history & metallurgy,
ISBN 978-2-922686-14-2

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