Minimization of Copper Losses in Copper Smelting Slag
2012年9月21日 The electric furnace or rotary slag-cleaning furnace are now generally used to perform this task, giving a level of copper in
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Characteristics and utilisation of copper slag—a review
2003年11月1日 The copper slag that is usually found is an impure iron silicate glass with small inclusions of copper and copper sulphide. The chemical composition of slag
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Magnetohydrodynamic Copper Slag Cleaning
2023年3月24日 The future challenge for copper smelters is to increase metal yield by reducing copper losses and valorizing the slag as a marketable by-product. This can be
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Copper Smelting Slag Cleaning in an Electric Furnace by
2020年10月16日 Based on the physicochemical reaction of the melt, the process of copper slag cleaning in an electric furnace could be divided into two steps: reduction
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The Physical Chemistry of Copper Smelting Slags and Copper
In the case of the TC, the present study has shown that with ∼46 wt-%Cu in slag, about 87% was present as entrained matte. For the electrical furnace, the amount of entrained
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Comparison of Copper Smelting Slags Between Flash
2022年2月4日 It is well known that there are two main copper loss mechanisms in the smelting slag: (1) chemical loss, which is related to the dissolution of copper in the liquid
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Recovery of copper from reverberatory furnace slag by
2004年3月1日 Conclusions. For separating copper from reverberatory slag with a copper content of about 1%, flotation was used, and in one stage flotation a recovery of 72% to a
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(PDF) Minimization of Copper Losses in Copper Smelting
2012年11月1日 For these conditions, the copper losses in the slag are roughly 75% as dissolved copper and 25% as entrained matte and copper. Such conditions include operating the electric furnace at metallic ...
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THE ELECTRICAL CHARACTERISTICS OF COPPER
This nickel free slag contains 0.4 % Co and 0.82 % Cu. OUE main studies were about recoveries of valuable metals such as cobalt, copper and iron from the ancient slag via
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Mesoamerican copper smelting technology aided colonial
2020年3月31日 This hearth from one of the Mesoamerican smelting furnaces, seen as it was being excavated by Dorothy Hosler and her team in Mexico, was among the sites that revealed that indigenous people were
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Smelting reduction and kinetics analysis of magnetic iron in copper
2017年5月25日 In this study, electric furnace copper slag was found to be composed of magnetic iron (Fe 3 O 4), fayalite (Fe 2 SiO 4), calcium magnesium oxide, and a silicate solid solution. The magnetic iron ...
MoreCopper Recycling - ScienceDirect
2014年1月1日 Slag from copper-smelting operations usually contain between 1.5% and 8% copper depending on process used. After internal recycling, reduction and/or settling, the slag contains between 0.7% and 2% Cu and is often discarded. It is estimated that about 2.2 t of slag is generated per ton of copper produced.
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Magnetohydrodynamic Copper Slag Cleaning - link.springer
2023年3月24日 The future challenge for copper smelters is to increase metal yield by reducing copper losses and valorizing the slag as a marketable by-product. This can be achieved through further slag cleaning in a conventional submerged arc furnace (SAF) where remaining metallic oxides are reduced, and metal droplets have more settling
MoreComparison of Copper Smelting Slags Between Flash Smelting Furnace
2022年2月4日 It is well known that there are two main copper loss mechanisms in the smelting slag: (1) chemical loss, which is related to the dissolution of copper in the liquid phase, and (2) mechanical or physical loss, which is the entrained matte droplets not completely settled from the slag.
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Effect of Slag Properties on Copper Loss in Copper Slag
2022年4月9日 2.1.1 Copper Slag Smelting copper slag produced by bottom blowing furnace is commonly used the local copper industry and is the material of study in this research. After crushing and grinding, a representative sample
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(PDF) Minimization of Copper Losses in Copper
2012年11月1日 The authors further consider that under exceptionally well-controlled conditions, a copper content in electric furnace discard slag between 0.55 wt.% and 0.7 wt.% can be obtained, by...
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THE ELECTRICAL CHARACTERISTICS OF COPPER SLAGS IN A
This nickel free slag contains 0.4 % Co and 0.82 % Cu. OUE main studies were about recoveries of valuable metals such as cobalt, copper and iron from the ancient slag via pyro and hydrometallurgical methods [5-14]. While smelting the slag using DC arc furnace, we also gathered electrical information via computer and data acquisition systems ...
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Recovery of valuable metals from copper blast furnace slag
2004年8月1日 Abstract Recovery of valuable metals such as copper and nickel from copper blast furnace slag by carbon was studied. The optimum conditions necessary for maximum recovery of these metals...
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Preparation of densified glass-ceramics with less shrinkage cavities ...
12 小时之前 The preparation of copper slag glass-ceramics is divided into the six steps shown in Fig. 3 with the temperature schedule presented in Table 3. (1) First, 200 g of dried copper slag was placed in a corundum crucible with a corundum protective cover to reduce the contact between the copper slag and air during the remelting process.
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Reduction of Chilean copper slags: a case of waste
copper slag every year with chemical composition sum- ... Slag cleaning 9.039 Reverberatory furnace 2.500 0.94 38.3 7.0 32.8 0.99 Teniente slag cleaning 5.164 1.23 45.0 9.5 28.2 1.57
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Characterization and Recovery of Copper from Converter Copper Slag
2018年8月1日 About 68.7 million tons of copper slag are produced annually worldwide by copper smelters, [ 1] leading to significant ecological and economic issues. Copper smelter operations can be divided into two main steps: smelting and converting. Flash smelting and bath smelting are the two most widely used smelting processes to produce matte.
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Copper Smelting - Metallurgist Mineral Processing Engineer
2021年1月13日 Copper Smelting Process. In the autogenous system described by this report, sulfide concentrate and silica flux are blown into the furnace through a specially designed burner with oxygen and is flash smelted to about 50-percent copper matte. The matte flows down an inclined crucible, countercurrent to the slag flow, to the converting
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DESIGN OF COPPER COOLING SYSTEMS FOR COPPER SMELTING
2019年9月2日 The use of sidewall copper cooling systems to prolong furnace campaign life is becoming an accepted technology solution in the base metals industry. Tenova Pyromet has designed and installed a...
More12.3 Primary Copper Smelting - US EPA
In fire refining, blister copper is usually mixed with flux and charged into the furnace, which is maintained at 1100°C (2010°F). Air is blown through the molten mixture to oxidize the copper and any remaining impurities. The impurities are removed as slag. The remaining copper oxide is then subjected to a reducing atmosphere to form purer ...
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Smelting reduction and kinetics analysis of magnetic iron in copper
2017年5月25日 A crucible with copper slag was placed in the furnace tube, and the top of the furnace tube was sealed using a stainless steel flange seal. First, argon gas was bubbled into the furnace...
MoreMagnetohydrodynamic Copper Slag Cleaning - link.springer
2023年3月24日 The future challenge for copper smelters is to increase metal yield by reducing copper losses and valorizing the slag as a marketable by-product. This can be achieved through further slag cleaning in a conventional submerged arc furnace (SAF) where remaining metallic oxides are reduced, and metal droplets have more settling
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Settling of Copper Phases in Lime Modified Iron Silicate Slag
2021年7月10日 Copper in discarded slag decreases the profits and copper recovery during the pyrometallurgical extraction processes. The copper losses to slag can be reduced by using a settling furnace, in which mechanically entrained copper droplets separate from the slag under the action of gravity.
MoreTHE ELECTRICAL CHARACTERISTICS OF COPPER SLAGS IN A
This nickel free slag contains 0.4 % Co and 0.82 % Cu. OUE main studies were about recoveries of valuable metals such as cobalt, copper and iron from the ancient slag via pyro and hydrometallurgical methods [5-14]. While smelting the slag using DC arc furnace, we also gathered electrical information via computer and data acquisition systems ...
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Characterization of copper slag for beneficiation of iron and copper
2021年4月1日 One such possible source is copper slag. Copper Slags mainly report to the tailings stream from the smelting of a copper concentrate [ 2 ]. The slag we used in this investigation was obtained from BCL mine located in the Northern part of Botswana in a mining town called Selebi Phikwe.
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Quenched Slag - an overview ScienceDirect Topics
Air-cooled and quenched slags are the outcomes of different cooling rates applied during the production of copper. Spent CS is a reuse material from its application as an abrasive. CS is an angular, smooth, hard, dense and low-absorption material, composed mainly of iron oxide and silicon dioxide.
MoreRecovery of valuable metals from copper blast furnace slag
2004年8月1日 Abstract Recovery of valuable metals such as copper and nickel from copper blast furnace slag by carbon was studied. The optimum conditions necessary for maximum recovery of these metals...
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Copper Smelting - Metallurgist Mineral Processing
2021年1月13日 Copper Smelting Process. In the autogenous system described by this report, sulfide concentrate and silica flux are blown into the furnace through a specially designed burner with oxygen and is flash
MorePreparation of densified glass-ceramics with less shrinkage cavities ...
12 小时之前 The preparation of copper slag glass-ceramics is divided into the six steps shown in Fig. 3 with the temperature schedule presented in Table 3. (1) First, 200 g of dried copper slag was placed in a corundum crucible with a corundum protective cover to reduce the contact between the copper slag and air during the remelting process.
MoreReduction of Chilean copper slags: a case of waste
copper slag every year with chemical composition sum- ... Slag cleaning 9.039 Reverberatory furnace 2.500 0.94 38.3 7.0 32.8 0.99 Teniente slag cleaning 5.164 1.23 45.0 9.5 28.2 1.57
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Removal of copper from aqueous solution using ground
This work aims to evaluate the effectiveness of ground granulated blast furnace slag (GGBS) in removing copper from aqueous solutions. Batch adsorption studies were done to optimize conditions for the removal of copper. Factors affecting adsorption such as pH, GGBS dosage, contact time, copper concentration and temperature were determined.
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Recovery of Valuable Metals from Nickel Smelting Slag Based on ...
2021年9月19日 Nickel smelting slag contains valuable metals including nickel and copper. Failure to recycle these metals wastes resources, and disposal of nickel slag in stockpiles results in environmental pollution. Nickel slag recycling is important, and metals can be recovered from slag by flotation. However, considering the complex forms in which
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Copper extraction - Wikipedia
Copper can be lost from the matte in three ways: as cuprous oxide (Cu 2 O) dissolved in the slag, [34] as sulfide copper dissolved in the slag [35] or as tiny droplets (or prills) of matte suspended in the slag. [36] [37] The amount of copper lost as oxide copper increases as the oxygen potential of the slag increases. [37]
MoreMetals Free Full-Text Influence of Process Parameters on Copper ...
2021年6月21日 During the pyrometallurgical extraction of copper, a significant fraction of this metal is lost with discard slag, which decreases profits and overall copper recovery. These copper losses can be reduced by using a settling furnace, in which suspended droplets containing copper separate from slag under the influence of gravity. An
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