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Hg Hg2' Hg2+ + 2 e Hg +0.851 Ag Ag+ Ag+ + e g +0.799 Cu Cu +- u +-+ 2 e Cu +0.33 Pb Pb2+ Pb2++ 2 e Pb -0.126 Sn Sn2+ Sn2+ + 2 e Sn -0,136 Cd Cd2+ Cd2+ + Cd Cd -0.403 Fe Fe2' Fe2+ + 2 e Fe -0.440 Cr Cr3+ Cr5+ + 3 e Cr -0.744 Zn Zn2+ Zn2+ + 2 e Zn -0.763 11 Mn2+ Mn2+ + 2 e Mn -1.180 Al3, Al31 + 3 e Al -1.662 Mg i Mg2+ MgI+ + 2 e Mg -2.363 Li I Li+ Li++ e Li -3.04 S04 + H20 H2SO4 + 1 2 O2 (4.19) Chlorine may also be evolved if the effluent metal salt is a chloride Figure 4.15 Laboratory design...

Metal Recycling

Content as low asP0.001 t 0.03 'Jm justify reprocessing of& eTrap content as low asP0.001 t 0.03 'Jm justify reprocessing of& eTrap Table 7.3. Main Categories of Copper Scrap and Copper Alloy Scrap Recognized by ISRI. blast furnace at the top is used to process the lowest grade scrap. TBRCs are also used instead. This produces molten black copper, which is converted to blister-grade copper in a converting furnace. The rough copper is then fire-re fined and electrorefined.

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D2EHPA Fe(IlI) > Zn(ll) > Ca(U) > Cu(II) > Mg(II) > Co(II) > Ni(II) PC 88A Fe(III) > Zn(II) > Cu(II) > Ca(II) > Co(II) > Mg(II) > Ni(II) CYANEX 272 Fe(IIl) > Zn(H) > Cu(II) > Co(II) > Mg(II) > Ca(II) > Ni(II) D2EHPA Fe(IlI) > Zn(ll) > Ca(U) > Cu(II) > Mg(II) > Co(II) > Ni(II) PC 88A Fe(III) > Zn(II) > Cu(II) > Ca(II) > Co(II) > Mg(II) > Ni(II) CYANEX 272 Fe(IIl) > Zn(H) > Cu(II) > Co(II) > Mg(II) > Ca(II) > Ni(II) M + tiNaA...

R NHj

For the reduction, Cu(l)-Cu(0) (CuCl + e Cu + CI), E +0.137 V. The Cu + Cu2+ + 2 CI 2 CuCl E0 +0.403 V and AG0 -38.7 kJ mol Cu. CuCl). For the reduction, Cu(l)-Cu(0) (CuCl + e Cu + CI), E +0.137 V. The Cu + Cu2+ + 2 CI 2 CuCl E0 +0.403 V and AG0 -38.7 kJ mol Cu. 2BiO + 12H+ + 2C10f + 12H+ + a2 + 2e 2CT Cr2Ol + 14H+ + 6e - 203* + 7H20 2HNOj + 4H+ + 4e - N,0 + 3HjO MnOj + 4H+ + 2e Mn + + 2H20 02 + 4H+ + 4e 2HjO 2IO3- + 12H- + 10e - I2 + 6HjO Cu2+ + Br + e Cu2+ + CT + e CuCl 2 H* + SO*2 + 2...

Working together to grow libraries in developing countries

Magnetic Separator Schematic Diagram

Www.elsevier.com www.bookaid.org www.sabre.org This Page is Intentionally Left Blank This Page is Intentionally Left Blank This Page is Intentionally Left Blank 1.1. Solid Wastes from Various Sources Figure 1,2, Life-cycle analysis, schematic (Wanner Bulletin 46,1995) Figure 1,2, Life-cycle analysis, schematic (Wanner Bulletin 46,1995) Figure 1.3. Life-cycle assessment for recycled and virgin materials (modified from White et al., 1995) Figure 1.3. Life-cycle assessment for recycled and virgin...

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Eu and Divinyl benzene) Resin for Some Metaffons with Lithium as the Base (klmon, 1979a) 4.6. Schematic representation of the nature of upta et at, 1991). (H3POj) aCld aS 10n CXChange 8r0UP' governed y ft I is, the metal ion which is more read 1976 Hudson, 1982 Ritcey aS Adibrook, 1984). * ( ' ' ' P 1976 Hudson, 1982 Ritcey aS Adibrook, 1984). * ( ' ' ' P NT + HHA - MA + nH+ (4.17) 18 eXtaCted mt thC OTSm 1984, p. 20). 18 eXtaCted mt thC OTSm 1984, p. 20). Versatie 10,13,1519 and SRS-100 (De,...

Department of Mining Metals and Materials Engineering McGill University Montreal Quebec Canada

Amsterdam - Boston - Heidelberg - London - New York - Oxford Paris - San Diego - San Francisco - Singapore - Sydney - Tokyo The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, UK Radarweg 29, PO Box 211, 1000 AE Amsterdam, The Netherlands Copyright 2006 Elsevier B.V. All rights reserved No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means electronic, mechanical, photocopying, recording or otherwise without the prior written...

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Generalized flowsheet for the recovery of metal products fom grinding waste Redden and Swarup, 1990 Lithium Lithium Various oxides Organic solvent 3 - x Fe3 X Mn OH 02 - gt M Fe 3_x 04 4- H20 10.79 3 - x Fe3 X Mn OH 02 - gt M Fe 3_x 04 4- H20 10.79 300 C in presence of oxygen to produce Co304 thatiTthe precursor of cobaltite. In the second case cobalt deposit has to be re-dissolved and then crystallized as cobalt sulfate or porous graphite cathode is used for a complete cobalt...

Copper Recovery by Smelting Reduction Operation

The Ausmelt furnace described in Chapter 3 has been extensively used for recycling copper from secondary materials. Metal scrap is smelted at 1250 C with fluxes and coal used as reducing agent. This produces black copper containing 80-90 Cu., a fume containing high levels of zinc and lead and an environmentally safe slag containing lt 1 copper. Furnace exhaust gases are generally ducted to an evaporative cooler before the dust is collected in a baghouse. The slag generated is tapped from the...

Electrochemical Method to Recover Copper from Alloy Scrap

Electrowinning Copper

In he conventional method of refining copper, used for many years, the copper scrap is melted in a converter or directly in an anode furnace, and cast into a massive anode. The anodes with a copper content of 93 are suspended in cells filled with sulfuric acid-based electrolyte, containing 130-200 g L sulfuric acid and 15-50 g L cupric tons. Cathodes consist of a thin sheet of copper, which is negatively charged. When a voltage is applied, copper passes into solution, while other elements, like...

Byproduct Processing And Utilization

Sterile Processing Process Flow Chart

Ion Wast slag produce is around 100 million tons per year about 10 vrt of the global Ion Wast slag produce is around 100 million tons per year about 10 vrt of the global Rankinite Ca3Si207 Gehlenite Ca2Al2SiO, Wustite FeO Gehlenite CajAljSiO, pig iron 1.6-1J P results in a slag rich in P2Os content of the slag exceeds 12 high in the first slag and it can be used in 2Ca2SiO 4H20- 3 Ca0.2Si02.3H20 Ca OH 2 9.3 Ca0.7Al20j 12 H20 CaO. A1203,6H20 6 A120,.H20 9.4 SiOCa M2 SiOM CaJ 9.5 SiOCa M2 SiOM...

Primus Process Diagram Eaf Dust

Carbon Binder Coal Coke

Selective recovery of cobalt and copper from waste slag requires controlling the quantity of reductant added or equivalent oxygen partial pressure. When carbon is used as the reductant the amount is found to be about 5 of the total slag feed in a laboratory study by Banda and coworkers 2002 . These researchers have also found that the base metal recovery can be significantly improved by certain slag modifiers. The modifiers investigated are lime CaO , fluorspar CaF2 and rutile Ti02 . Rutile has...