hydrometallurgy

VOL. 51, NO. 2 FEBRUARY 1999



Thermodynamic and kinetic studies of palladium(ll) extraction by extractant mixtures contain
ing LIX 63. Part 1. Thermodynamic study
C. Foulon, D. Pareau and G. Durand ............................................................. 139

A study of the factors affecting copper cementation of gold from ammoniacal thiosulphate
solution
E. Guerraand D.B. Dreisinger ................................................................... 155

Dissolution kinetics of magnesite mineral in water saturated by chlorine gas
H. Ozbek, Y. Abali, S. Çolak, 1. Ceyhun and Z. Karagulge .................... 173

Modified zinc sulphate solution purification technique to obtain low levels of cobalt for the zinc
electrowinning process
R. Raghavan, P.K. Mohanan and S.K. Verma ...................................... 187

Innovative hydrometallurgical processing technique for industrial zinc and manganese process
residues
R. Raghavan and R.N. Upadhyay .......................................................... 207

Acidic leaching of scheelite concentrate and production of hetero-poly-tungstate salt
S. Gurmen, S, Timur, C. Arslan and 1. Duman .................................... 227

Recovery of titanium from the leach liquors of titaniferous magnetites by solvent extraction.
Part 1. Review of the literature and aqueous thermodynamics
K.C. Sole .............................................................................................. 239

Comments on: A mathematical model of the leaching of gold in cyanide solutions by Frank K.
Crundell and Sven A. Godorr [Hydrometallurgy 44 (1997) 147-162)
G.T. Lapidus-Lavine ......................................................................... 255

A mathematical model of the leaching of gold in cyanide solutions: Reply to G.T. Lapidus-Lavine
F. Crundwell................................................................................... 258

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Hydrometallurgy
VOL. 52, NO. 1, APRIL 1999

Scandium extraction by neutral organo-phosphorus compounds supported on a porous carrier
V. Korovin, Yu. Shestak and Yu. Pogorelov. ................................................................................................... 1


Liquid-liquid extraction of gallium from Bayer process liquor using Kelex 100 in the presence
of surfactants
G.V.K. Puwada.................................................................................................................................................. 9


Gold cyanidation using hydrogen peroxide
L. Guzman, M. Segarra, J.M. Chimenos, M.A. Fernandezand F. Espiell .................................................... 21


The ferric leaching kinetics of arsenopyrite
R. Ruitenberg, G.S. Hansford, M.A. ReuterandA.W. Breed .......................................................................... 37


Recovery of copper from ammoniacal/ammonium carbonate medium by LIX 973N
F.J. Alguacil........................................................................................................................................................ 55


Solvent extraction of gold (III) by the chloride salt of the tertiary amine Hostarex A327.
Estimation of the interaction coefficient between AuCI(4) and H +
S. Martinez, A.M. Sastreand F.J. Alguacil ...................................................................................................... 63


Technical Notes
Anomalous dependence of leachability on surface area during sulphuric acid leaching of
nickel- and copper-doped birnessites
R. Kumar .......................................................................................................................................................... 71


Optimisation of the chlorination of gold in decopperized anode slime in aqueous medium
B. DOnmez, Z. Ekinci, C. Qelik and S. Qolak ............................................................................................... 81


Reduction of Mn(IV) oxide by (NH(4) )gSO(3) in the presence of metal ions in ammoniacal medium
P.K. Das, D. Mishra, S. Anand and R.P. Das ................................................................................................. 91


News Item............................................................................................................................................................. 105


Patents alert section .............. ........................................................................................................................... 107

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Hydrometallurgy
VOL. 52, NO. 2, MAY 1999

CONTENT


Studies on the kinetics of slurry chlorination of a sphalerite concentrate by chlorine gas
P.K. Jena, 0. Barbosa-Filhoand 1.C. Vasconcelos. ............................................................................ 111


Stripping of silver from Primene JMT loaded with silver thiocyanate complexes
S. Sanuki, M. Yata and H. Majima .................................. .......................................................................123


Dissolution reactivity of NiO obtained by calcination of pure and contaminated Mi-hydroxides
T. Grygar, J. Jandova and Z. Klimova ................................................................................................... 137


Modeling the cyanide heap leaching of cupriferous gold ores Part 1: Introduction and interpre-
tation of laboratory column leaching data
F. Coderre and D.G. Dixon ..................................................................................................................... 151


Pressure reduction of copper(ll) from highly acidic aqueous solutions containing arsenic
J. Wodka, W.A. Charewicz and T. Janicki ............................................................................................. 177


A comparative study of the mass transfer kinetics of metal biosorption by microbial biomass
P.P. Puranik, J.M. Modak and K.M. Paknikar........................................................................................ 189


Recovery of lanthanides from Abu Tartur phosphate rock, Egypt
M.M. Aly and N.A. Mohammed ................................................................................................................ 199



Erratum ...................................................................................................................................................... 207

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HYDROMETALLURGY

VOL. 53, NO. 1, JULY 1999

A kinetio study of the^eaching of a Nigerian ilmenite ore by hydrochloric acid
E. Olanipekun.............................................. 1

Processing of solutions containing nickel and ammonium sulphate through solvent extraction
using PC-88A
B.R. Reddy, C. Parijaand P.V.R.B. Sarma ............................. 11


Multicomponent separation by a combined extraction/electrostatic pseudo-liquid membrane
(II): extraction and group separation of rare earths from simulated rare earth ore leach
solutions
X.J. Yang, Z.M. Gu and A.G. Fane.................................. 19


Hydrometallurgical recovery of metal values from brass melting slag
S.M. Abdel Basirand M.A. Rabah .................................. 31


Ammoniacal leaching of roast reduced deep-sea manganese nodules
R.K. Jana, B.D. Pandeyand Prernchand .............................. 45


Comparison of the oxidation kinetics of different pyrites in the presence of Thiobacillus
ferrooxidans or Leptospirillum ferrooxidans
M. Boon, H.J. Brasser, G.S. Hansford and J.J. Heijnen ...................... 57


Enrichment of titanium dioxide in red mud: a kinetic study
P. Kasliwal and P.S.T. Sai. ....... ...... ............... .......... 73


Separation of Y(lll) complexes from Dy(lll), Ho(lll) and Er(lll) complexes with iminodiacetic
acid on the anion-exchangers type 1 and type 2
H. Hubicka and D. Drobek. ...................................... 89

PatentsALEHT ............................................... .101

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hydrometallurgy
VOL. 54, NO. 1 , NOV/DEC 1999



Study of kinetics of forward extraction of Fe(lll) from chloride medium by di-2-ethylhexylphos-
phone acid in kerosene using the single drop technique
RX Biswas and DA Begum 1


A study of the kinetics of reductive leaching of manganese oxide ore in aqueous methanoi-
sulphuric acid medium
FW.Y. MomadeandZs.G. Momade 25


Statistical analysis of laboratory results of Zn wastes leaching
L.J. Lozano Blanco, V,F, Meseguer Zapata and D, De Juan Garcia 41



Thermodynamic and kinetic studies of palladium (II) extraction by extractant mixtures contain-
ing UX 63 Part II. Kinetic study
C. Foulon, D. Pareau, M, StambouliandG, Durand 49

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