chemical metallurgy of copper recycling

... Lawrencium Trang 5Extractive Metallurgy of Copper FOURTH EDITION Trang 6Elsevier Titles of Related Interest P BALAZ (Slovak Academy of Sciences, Slovakia) Extractive Metallurgy of Activated Minerals ... Melting and Casting Cathode Copper Recycle of Copper and Copper-Alloy Scrap Suggested Reading References 2 Production and Use 2.1 Locations of Copper Deposits 2.2 Location of Extraction Plants 3.2 ... Prices, Profitability Trang 16Stoichiometric Data for Copper Extraction Copper Recovery from Anode Slimes Sketch of Series-Parallel Solvent Extraction Circuit Extended List of Chinese Copper Refineries

Ngày tải lên: 10/08/2014, 11:22

... and floor of the Inco furnace are protected by a coating of magnetite- rich slag Thickening of this coating is favored by: (a) highly oxidizing conditions in the furnace (Le production of high ... recovery of offgas heat in a waste heat boiler (d) engineering and operational support Very little nitrogen enters the Inco furnace so its blast and offgas handling systems are small Also, the offgas ... Metallurgical Society of CIM, Montreal, 321 335 Jones, D.M., Cardoza, R and Baus, A (1999) Rebuild of the BHP San Manuel Outokumpu flash furnace In Copper 99-Cobre 99 Proceedings of the Fourth International

Ngày tải lên: 10/08/2014, 11:22

... Lawrencium Trang 5Extractive Metallurgy of Copper FOURTH EDITION Trang 6Elsevier Titles of Related Interest P BALAZ (Slovak Academy of Sciences, Slovakia) Extractive Metallurgy of Activated Minerals ... Melting and Casting Cathode Copper Recycle of Copper and Copper-Alloy Scrap Suggested Reading References 2 Production and Use 2.1 Locations of Copper Deposits 2.2 Location of Extraction Plants 3.2 ... Prices, Profitability Trang 16Stoichiometric Data for Copper Extraction Copper Recovery from Anode Slimes Sketch of Series-Parallel Solvent Extraction Circuit Extended List of Chinese Copper Refineries

Ngày tải lên: 11/08/2014, 04:20

... separate tap holes Feeding of smelting furnaces and withdrawing of offgas is continuous Removal of matte and slag is, however, done intermittently, when the layers of the two liquids have grown ... all copper producers now recover Cu from smelting and converting slags, Chapter 11 As a result, production of higher-grade mattes has become more popular Most of the rest of the matte consists of ... Table 4.2 shows the composition of mattes 68 Extractive Metallurgy of Copper tapped from various smelters The most important characteristic of a matte is its grade (mass% Cu), which typically ranges

Ngày tải lên: 11/08/2014, 04:20

... and floor of the Inco furnace are protected by a coating of magnetite- rich slag Thickening of this coating is favored by: (a) highly oxidizing conditions in the furnace (Le production of high ... recovery of offgas heat in a waste heat boiler (d) engineering and operational support Very little nitrogen enters the Inco furnace so its blast and offgas handling systems are small Also, the offgas ... Metallurgical Society of CIM, Montreal, 321 335 Jones, D.M., Cardoza, R and Baus, A (1999) Rebuild of the BHP San Manuel Outokumpu flash furnace In Copper 99-Cobre 99 Proceedings of the Fourth International

Ngày tải lên: 11/08/2014, 04:20

... consist of a 5 cm steel shell lined with -0.5 m of magnesite- chrome refractory brick Converters of these dimensions treat 300-700 tonnes of matte per day to produce 200-600 tonnes of copper per ... metal’ is oxidized to molten blister copper The converting process is terminated the instant copper oxide begins to appear in samples of the molten copper The copper is poured from the converter ... mixture The products of oxidation in this mixture are SOz, molten copper and copper oxide The molten copper is dense and fluid It quickly sinks below the tuyeres The most probable coppermaking reactions

Ngày tải lên: 11/08/2014, 04:20

... its roof (Oshima, et al., 1998) 158 Extractive Metallurgy ofcopper Copper siphon Fig 10.1 Mitsubishi downward lance continuous converter, 12.5 m diameter It converts up to 1500 tonnes of matte ... (1991) The Kidd Creek copper smelter - an update on plant performance In Copper 91-Cobre 91, Proceedings of the Second International Conference, Vol IV Pyrometallurgy of Copper, ed Diaz, C., Landolt, ... Each lance consists of two concentric pipes - a central pipe for air-blown solids and an annulus for 160 Extractive Metallurgy of Copper Table 10.1 Physical and operating details of Port Kembla's

Ngày tải lên: 11/08/2014, 04:20

... Extractive Metallurgy of Copper Ross, K.G (1991) Sulphuric acid market review In Smelter Off-gas Handling and Acid Plants, notes from Canadian Institute of Mining and Metallurgy professional ... tonnes of sulfuric acid per tonne of product copper depending on the S K Uratio of their feed materials This chapter describes: (a) offgases from smelting and converting (b) manufacture of sulfuric ... Peirce-Smith converter gases 217 18 Extractive Metallurgy of Copper Table 14.1 Standards for maximum SO2 concentration at ground level outside the perimeters of copper smelters Maximum SOz + SO, concentration

Ngày tải lên: 11/08/2014, 04:20

... or by examination of copper test blocks) Copper with this oxygen content 'sets flat' when it is cast into anodes Trang 4250 Extractive Metallurgy of Copper Table 15.2 Details of seven rotary anode ... that adoption of continuous anode casting will bring anode making up to the same high level of consistency as other aspects of copper refining Trang 14260 Extractive Metallurgy of Copper 15.6 ... blister copper by blowing basic flux (56% CaC03, 11% CaO, 33% Na2C03) into the copper during the oxidation stage About 7 kg of flux are blown in per tonne of copper About 90% of the As and 70% of

Ngày tải lên: 11/08/2014, 04:20

... Extractive Metallurgy of Copper De Maere, C and Winand, R (1995) Study of the influence of additives in copper electrorefining, simulating industrial conditions In Copper 95-Cobre 95 Proceedings of the ... Reduction of silver losses during the refining of copper cathodes In Copper 99-Cobre 99 Proceedings of the Fourth International Conference, Vol 111 Electrorefining and Electrowinning of Copper, ... removal of antimony and bismuth from copper refinery electrolytes In Copper 95-Cobre 95 Proceedings of the Third International Conference, Vol III Electrorefining and Hydrometallurgy of Copper,

Ngày tải lên: 11/08/2014, 04:20

... impure (1 - 10 kg Fe/m3) for direct electrodeposition of high purity cathode copper Electrowinning from these solutions would give soft, impure copper deposits Industrial electrowinning requires ... in the production of -2.5 million tonnes of metallic copper per year It continues to grow in importance as more and more Cu ore is leached 18.1 The Solvent Extraction Process Copper solvent extraction ... plants consist of one to four identical solvent extraction circuits (‘trains’) - each capable of treating 500 to 4000 m3 of pregnant solution per minute Each train transfers 20-250 tonnes of Cu from

Ngày tải lên: 11/08/2014, 04:20

... Processing of Recycled Copper Previous chapters describe production of primary copper - i.e extraction of copper from ore This chapter and the next describe production of secondary copper - i.e ... addition, copper recycling often includes the treatment of wastes The definition of this word is a matter of debate in industrialized countries, because the sale and transportation of materials ... problem of manganese and its effects on copper SX-EW operations In Copper 95-Cobre 95 Proceedings of the Third International Conference, Vol III Electrorefining and Electrowinning of Copper,

Ngày tải lên: 11/08/2014, 04:20

... conductivity copper [OFHC]) grades The amount of Trang 4370 Extractive Metallurgy of Copper oxygen in these grades is so low that no visible amount of CuzO is present in the solid copper microstructure ... recognizes about 35 grades of wrought 'coppers' (99.3% Cu or better) and six grades of cast coppers (Joseph, 1999) Several of these coppers are alloyed with small amounts of phosphorus to combine ... the fraction of copper sold as OFC is not large Koshiba et al (2000) and the Copper Development Association (2001) estimate that OFC accounts for less than two percent of total copper use Table

Ngày tải lên: 11/08/2014, 04:20

... electrorefinery Trang 11Costs of Copper Production 387 which: (a) costs $500 per annual tonne of copper (b) produces 200 000 tonnes of copper per year will be: $500 per annual tonne of copper investment, ... terms of investment cost per annual tonne of product copper This is defined by the equation: (23.2) investment cost per annual plant capacity, tonnes of copper per year plant cost = tonne of copper ... applications It accounts for less than 2% of copper production These pure copper products account for about 70% of copper use remainder is used in the form of copper alloy, mainly brass and bronze

Ngày tải lên: 13/08/2014, 04:23

... 1% of copper production About 20% of copper production is used in alloy form as brasses, bronzes, etc The copper for these materials comes mainly from recycle scrap 1.5 Recycle of Copper and Copper- Alloy ... extractionielectrowinning of ‘oxide’ and chalcocite ores An important source of copper is recycled copper and copper alloy scrap It accounts for 40 or 50% of pre-manufacture copper production This copper is ... simple melting of high-purity scrap and smeltingirefining of impure scrap 16 Extractive Metallurgy of Copper Electrochemical processing is always used in producing high-purity copper: electrorefining...

Ngày tải lên: 10/08/2014, 11:22

... amount of Fe-sulfide The last part of flotation is creation of strong but short-lived froth when the bubbles reach the surface of the pulp This froth prevents bursting of the bubbles and release of ... flotation feed number of cells volume of each cell, m3 cell type mass% solids in feed PH collector kgitonne of ore oily collector, kgit of ore frother kg/tonne of ore CaO, kgitonne of ore residence ... flotation cell (often with the assistance of paddles, Fig 3.7) and into a trough There, it collapses and flows into a collection tank Copper flotation consists of a sequence of flotation cells...

Ngày tải lên: 10/08/2014, 11:22

... blow and the start of the copper blow Clear tuyere conditions at the beginning of the copper blow often give ‘free blowing’ conditions (without punching) during most or all of the copper blow (Photograph ... They consist of a cm steel shell lined with -0.5 m of magnesitechrome refractory brick Converters of these dimensions treat 300-700 tonnes of matte per day to produce 200-600 tonnes of copper per ... In Copper9 5 Cobre 95 Proceedings of the Third International Conference, Vol IV Pyrometallurgy of Copper, ed Chen, W.J., Diaz, C., Luraschi, A,, and Mackey, P.J., The Metallurgical Society of...

Ngày tải lên: 10/08/2014, 11:22

... large mouth, which is also used for charging large pieces of scrap copper It produces 1.3% S 170 Extractive Metallurgy of Copper molten copper which is sent to a desulfurizing furnace prior to ... (1991) The Kidd Creek copper smelter - an update on plant performance In Copper 91-Cobre 91, Proceedings of the Second International Conference, Vol IV Pyrometallurgy of Copper, ed Diaz, C., Landolt, ... Each lance consists of two concentric pipes - a central pipe for air-blown solids and an annulus for 160 Extractive Metallurgy of Copper Table 10.1 Physical and operating details of Port Kembla's...

Ngày tải lên: 10/08/2014, 11:22

... Limitation of Direct-to -Copper Smelting The principal advantage of direct-to -copper smelting is isolation of SO2 evolution to one furnace The principal disadvantage of the process is its large amount of ... Direct-to -Copper Impurities The compositions of the anode copper produced by the direct-to -copper smelters are given in Table 12.2 The impurity levels of the copper are within the normal range of electrorefining ... Direct smelting of blister copper - flash smelting tests of Olympic Dam concentrate In Pyrometallurgy 87, The Institution of Mining and Metallurgy, London, England, 265 283 Direct-To -Copper Flush...

Ngày tải lên: 10/08/2014, 11:22

... Extractive Metallurgy of Copper formation of SO3 from SOz and 0'- ions, i.e.: so2+ v + + 02- + SO, + 2v4+ (14.2) and: (b) absorption of oxygen, re-oxidation of the vanadium ions and formation of 02ions ... Extractive Metallurgy of Copper Ross, K.G (1991) Sulphuric acid market review In Smelter Off-gas Handling and Acid Plants, notes from Canadian Institute of Mining and Metallurgy professional ... quantity of bleed depends on the amount of SO3in the offgas as it enters the water-quench system Several smelters have found that SO3 formation is inhibited by recycling some cooled offgas to...

Ngày tải lên: 10/08/2014, 11:22