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Contents vol. 26
405
Contents Vol. 26 Vol. 26 No. 1 Research Papers Dissolution of a m m o n i u m paratungstate tetrahydrate in aqueous ammonia before and after low temperature calcination J.W. van Put, W.P.C. Duyvesteyn and F . G J . Luger (Delft, Netherlands) ................................ Concentration of uranyl sulfate solution by an emulsion-type liquid membrane process T. Hirato, I. Kishigami, Y. Awakura and H. Majima (Kyoto, Japan) ....................................... Extraction of copper and nickel from ammoniacal leach liquor of Indian Ocean sea nodules B.D. Pandey and V. Kumar (Jamshedpur, India) ..................................................................... The solubility of silver chloride in sulphate media O. Dinardo and J.E. Dutrizac (Ottawa, Ont., Canada) ............................................................. The effect of lead on the cementation of gold by zinc M.T. Oo and T. Tran (Kensington, N.S.W., Australia) ............................................................. The use of coal spoils as feed materials for alumina recovery by acid leaching routes. Part 6: The purification and crystallisation of chloride and chloride/fluoride leach liquors by HC1 gas precipitation P. Mabi, W.R. Livingston, D.A. Rogers, R.J. Chapman and N.T. Bailey (Birmingham, U.K. ) ........................................................................................................................................... The performance of a 500 Amp rotating cylinder electrode reactor. Part 1: Current potential data and single pass studies D. Robinson (Brierley Hill, U.K. ) and F.C. Walsh (Glasgow, U.K. ) ....................................... The performance of a 500 Amp rotating cylinder electrode reactor. Part 2: Batch recirculation studies and overall mass transport D. Robinson (Brierley Hill, U.K. ) and F.C. Walsb (Glasgow, U.K. ) .......................................
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Announcements ................................................................................................................................
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Vol. 26 No. 2 Solvent extraction of tungsten by alkylamines-hydrochloric acid and alkylamines-sulphuric acid systems R.A. Guedes De Carvalho and M.N.M. Sampaio (Porto, Portugal) ......................................... A study of the kinetics of adsorption of gold and zinc cyanide onto a strong base anion exchange resin using a mini-column technique B.D. Young, A.W. Bryson and M.R.L. Glover (Johannesburg, South Africa) .......................... Gold dissolution in iodide electrolytes A. Davis and T. Tran (Kensington, N.S.W., Australia) ............................................................. Leaching of gold, silver and lead from plumbojarosite-containing hematite tailings in HCI-CaC12 media J. Vifials, C. Nufiez and J. Carrasco (Barcelona, Spain) ............................................................ The mechanisms of adsorption of Hg (CN)2 and HgC12 on to activated carbon M.D. Adams (Randburg, South Africa ) .....................................................................................
137
151 163
179 201
406 The effect of the iron content of sphalerite on its rate of dissolution in ferric sulphate and ferric chloride media I. Palencia Perez (Sevilla, Spain) and J.E. Dutrizac (Ottawa, Ont., Canada) .......................... Application of polynomial regression analysis to the interpretation of some types of metal extraction equilibria W. Apostoluk (Wroclaw, Poland ) .............................................................................................. Precipitation stripping of lanthanum and neodymium S. Zielinski, M. Buca and A. Szczepanik (Wroclaw, Poland) ....................................................
211
233 243
Technical Note Dissolution kinetics of some borate minerals in CO2-saturated water M. Alkan, M. Oktay, M. Muhtar Kocakerim and Z. Karag61ge .................................................
255
Announcements ................................................................................................................................
263
Vol. 26 No. 3 Research Papers Mechanistic studies of extraction of copper (II) from aqueous acid by 5-nonyl-2hydroxybenzaldoximes in organic solvenst. The effects of mixed solvents and modifiers J.A. Connor, N. Tindale (Canterbury, U.K. ) and R.F. Dalton (Manchester, U.K. ) ................ The kinetics of vanadium (IV) extraction in the acidic sulphate-D2EHPA-n-hexane system using the rotating diffusion cell technique M.A. Hughes (Bradford, U.K.) and R.K. Biswas (Rajshahi, Bangladesh) ............................... The kinetics of aluminium (III) extraction from sodium hydroxide solutions by an alkylated hydroxyquinoline (Kelex 100) T. Sato and D. Sato (Hamamatsu, Japan) ................................................................................. Acid pressure oxidation of pyrite: reaction kinetics V.G. Papangelakis and G.O. Demopoulos (Montreal, Que., Canada) ...................................... The precipitation of lead arosite from chloride media J.E. Dutrizac (Ottawa, Ont., Canada) ........................................................................................ Development of a process to produce lead oxide from Imperial smelting furnace copper/lead dross K.A. Chouzadjian, S.J. Roden, G.J. Davis and J.M. Laven (Boolaroo, N.S.W., Australia) ..... Leaching of 226Ra from components of uranium mill tailings E.R. Landa (Reston, Va., U.S.A.) .............................................................................................. Purification of rare earth oxide mixtures from a concentrate obtained during the processing of apatite M. Milanova, N. Minkova and D. Todorovsky (Sofia, Bulgaria) .............................................. Technical Notes Sulphuric acid pressure leaching of C u - N i - C o matte obtained from copper converter slag - optimisation through factorial design S. Anand, R.P. Das and P.K. Jena (Bhubaneswar, India) ......................................................... Purification of bis (2-ethylhexyl) monothiophosphoric acid H.-J. Bart and J. Reidetschl~iger (Graz, Austria) ....................................................................... The binary adsorption of gold cyanide and ethyl xanthate onto activated carbon B.D, Young, J.D. Le Roux and A.W. Bryson (Johannesburg, South Africa) ............................. Announcements ................................................................................................................................
265
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299 309 327
347 361
369
379 389 395 403
Contents Vol. 26 Vol. 26 No. 1 Research Papers Dissolution of a m m o n i u m paratungstate tetrahydrate in aqueous ammonia before and after low temperature calcination J.W. van Put, W.P.C. Duyvesteyn and F . G J . Luger (Delft, Netherlands) ................................ Concentration of uranyl sulfate solution by an emulsion-type liquid membrane process T. Hirato, I. Kishigami, Y. Awakura and H. Majima (Kyoto, Japan) ....................................... Extraction of copper and nickel from ammoniacal leach liquor of Indian Ocean sea nodules B.D. Pandey and V. Kumar (Jamshedpur, India) ..................................................................... The solubility of silver chloride in sulphate media O. Dinardo and J.E. Dutrizac (Ottawa, Ont., Canada) ............................................................. The effect of lead on the cementation of gold by zinc M.T. Oo and T. Tran (Kensington, N.S.W., Australia) ............................................................. The use of coal spoils as feed materials for alumina recovery by acid leaching routes. Part 6: The purification and crystallisation of chloride and chloride/fluoride leach liquors by HC1 gas precipitation P. Mabi, W.R. Livingston, D.A. Rogers, R.J. Chapman and N.T. Bailey (Birmingham, U.K. ) ........................................................................................................................................... The performance of a 500 Amp rotating cylinder electrode reactor. Part 1: Current potential data and single pass studies D. Robinson (Brierley Hill, U.K. ) and F.C. Walsh (Glasgow, U.K. ) ....................................... The performance of a 500 Amp rotating cylinder electrode reactor. Part 2: Batch recirculation studies and overall mass transport D. Robinson (Brierley Hill, U.K. ) and F.C. Walsb (Glasgow, U.K. ) .......................................
115
Announcements ................................................................................................................................
135
l 19 35 47 61
75
93
Vol. 26 No. 2 Solvent extraction of tungsten by alkylamines-hydrochloric acid and alkylamines-sulphuric acid systems R.A. Guedes De Carvalho and M.N.M. Sampaio (Porto, Portugal) ......................................... A study of the kinetics of adsorption of gold and zinc cyanide onto a strong base anion exchange resin using a mini-column technique B.D. Young, A.W. Bryson and M.R.L. Glover (Johannesburg, South Africa) .......................... Gold dissolution in iodide electrolytes A. Davis and T. Tran (Kensington, N.S.W., Australia) ............................................................. Leaching of gold, silver and lead from plumbojarosite-containing hematite tailings in HCI-CaC12 media J. Vifials, C. Nufiez and J. Carrasco (Barcelona, Spain) ............................................................ The mechanisms of adsorption of Hg (CN)2 and HgC12 on to activated carbon M.D. Adams (Randburg, South Africa ) .....................................................................................
137
151 163
179 201
406 The effect of the iron content of sphalerite on its rate of dissolution in ferric sulphate and ferric chloride media I. Palencia Perez (Sevilla, Spain) and J.E. Dutrizac (Ottawa, Ont., Canada) .......................... Application of polynomial regression analysis to the interpretation of some types of metal extraction equilibria W. Apostoluk (Wroclaw, Poland ) .............................................................................................. Precipitation stripping of lanthanum and neodymium S. Zielinski, M. Buca and A. Szczepanik (Wroclaw, Poland) ....................................................
211
233 243
Technical Note Dissolution kinetics of some borate minerals in CO2-saturated water M. Alkan, M. Oktay, M. Muhtar Kocakerim and Z. Karag61ge .................................................
255
Announcements ................................................................................................................................
263
Vol. 26 No. 3 Research Papers Mechanistic studies of extraction of copper (II) from aqueous acid by 5-nonyl-2hydroxybenzaldoximes in organic solvenst. The effects of mixed solvents and modifiers J.A. Connor, N. Tindale (Canterbury, U.K. ) and R.F. Dalton (Manchester, U.K. ) ................ The kinetics of vanadium (IV) extraction in the acidic sulphate-D2EHPA-n-hexane system using the rotating diffusion cell technique M.A. Hughes (Bradford, U.K.) and R.K. Biswas (Rajshahi, Bangladesh) ............................... The kinetics of aluminium (III) extraction from sodium hydroxide solutions by an alkylated hydroxyquinoline (Kelex 100) T. Sato and D. Sato (Hamamatsu, Japan) ................................................................................. Acid pressure oxidation of pyrite: reaction kinetics V.G. Papangelakis and G.O. Demopoulos (Montreal, Que., Canada) ...................................... The precipitation of lead arosite from chloride media J.E. Dutrizac (Ottawa, Ont., Canada) ........................................................................................ Development of a process to produce lead oxide from Imperial smelting furnace copper/lead dross K.A. Chouzadjian, S.J. Roden, G.J. Davis and J.M. Laven (Boolaroo, N.S.W., Australia) ..... Leaching of 226Ra from components of uranium mill tailings E.R. Landa (Reston, Va., U.S.A.) .............................................................................................. Purification of rare earth oxide mixtures from a concentrate obtained during the processing of apatite M. Milanova, N. Minkova and D. Todorovsky (Sofia, Bulgaria) .............................................. Technical Notes Sulphuric acid pressure leaching of C u - N i - C o matte obtained from copper converter slag - optimisation through factorial design S. Anand, R.P. Das and P.K. Jena (Bhubaneswar, India) ......................................................... Purification of bis (2-ethylhexyl) monothiophosphoric acid H.-J. Bart and J. Reidetschl~iger (Graz, Austria) ....................................................................... The binary adsorption of gold cyanide and ethyl xanthate onto activated carbon B.D, Young, J.D. Le Roux and A.W. Bryson (Johannesburg, South Africa) ............................. Announcements ................................................................................................................................
265
281
299 309 327
347 361
369
379 389 395 403