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Electric Slag Cleaning Copper Smelting

Copper Smelting Slag Cleaning in an Electric Furnace by ...

16/10/2020  In view of the non-renewable reductant resources and carbon neutralization in the process of copper slag cleaning in an electric furnace, this study proposed to use waste cooking oil as reductant to replace fossil energy.

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Minimization of Copper Losses in Copper Smelting Slag ...

21/09/2012  The electric furnace or rotary slag-cleaning furnace are now generally used to perform this task, giving a level of copper in discard slag typically in the range of 0.55 wt.% and 1.3 wt.%, with most plants reporting copper losses in the discard slag in the range of 0.8–1.0 wt.%.

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Reduction of Magnetite from Copper Smelting Slag using ...

Experiments were carried out in a slag cleaning electric furnace to reduce magnetite in copper smelting slag using petro-diesel or biodiesel produced from waste cooking oil, and the reduction effects using the two reducing agents were compared. The pyrolysis experiments of petro-diesel and biodiesel were carried

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OUTOTEC FLASH SMELTING TECHNOLOGY

Outotec Slag Cleaning Slag cleaning at copper and nickel smelters is typically done using an electric furnace process. The design of Outotec slag cleaning furnaces is based on our extensive experience with different slag compositions and under-standing of how to optimize the process for maximum recovery. Our energy efficient furnace design incorporates material handing, granulation, and off ...

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Slag cleaning in crossed electric and magnetic fields ...

01/01/2007  Slags from smelting of copper concentrate contains from 2% to 20% of copper and are directed to slag cleaning operation carry out in electric furnaces or other slag cleaning reactors with injection of carboneous reductant. Ionic structure of liquid slags points out the possibilities of utilization of slag electrolysis in reduction of magnetite and precipitation of dissolved copper as well as ...

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EFFICIENCY OF COPPER RECOVERY FROM A SLAG IN THE LARGE ...

The electric furnace in Codelco Norte Smelter has been designed originally as slag/matte separator and slag cleaning unit. For various reasons the furnace operates as a classical slag cleaning reactor. It creates the conditions that the furnace is over-dimensioned for the amount of slag from Teniente Converter together with charged solid reverts.

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Copper Slag TECHNOBLAST WORKSHOPS

Copper Slag Copper slag is an abrasive blasting grit made of granulated slag from metal smelting process (also call iron silicate). Copper Slag abrasive is suitable for blast cleaning of steel and stone/concrete surfaces, removal of mill scale, rust, old paint, dirt etc. Suitable for

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Extractive Metallurgy of Copper

Electric Slag-Cleaning Furnace Details 167 9.8.5. Converting Furnace Details 168 9.8.6. Optimum Matte Grade 169 9.8.7. Process Control in Mitsubishi Smelting/Converting 169 9.9. The Mitsubishi Process in the 2000s 174 9.10. Summary 175 References 176 Suggested Reading 177 10. Direct-To-Copper Flash Smelting 179 10.1. Advantages and Disadvantages 179 10.2. The Ideal Direct-to-Copper

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THE SUBMERGED ARC FURNACE (SAF) STATE OF ART IN METAL ...

Especially slag cleaning furnaces have supplied more than 20 in the last 40 years. Slag cleaning furnaces are commonly connected to smelting units such as Teniente and Noranda converter, Outokumpu flash smelter, reverbertory furnaces. The main function of the furnace is

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Slag cleaning in crossed electric and magnetic fields ...

01/01/2007  Slags from smelting of copper concentrate contains from 2% to 20% of copper and are directed to slag cleaning operation carry out in electric furnaces or other slag cleaning reactors with injection of carboneous reductant. Ionic structure of liquid slags points out the possibilities of utilization of slag electrolysis in reduction of magnetite and precipitation of dissolved copper as well as ...

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Kinetics of Copper Reduction from Molten Slags

from copper flash smelting slags. The flash smelting and slag cleaning processes are described in the introductory part. The studies are focused on the slag cleaning process in the three - electrode electric furnace (EF), where components of the slag reduce to matte and EF slag in a periodic batch process.

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Copper Loss in Slag - researchgate.net

Slag from an electric slag cleaning furnace was injected with methane and air mixtures to facilitate the recovery of copper and cobalt. The effects of methane-to-air ratio, gas flow rate and ...

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Improving Copper Recovery from Production Slags by ...

After matte smelting and standard slag cleaning in submerged arc furnaces (SAF), the fayalitic slag still contains up to 1 % of copper and other valuable metals like nickel, cobalt or molybdenum. In addition future regulations may restrict the heavy metal contents both in the solid and eluate in slags used for construction purposes in the future. Furthermore, the metal contents in ores are ...

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Minimization of Copper Losses in Copper Smelting Slag ...

Such conditions include operating the electric furnace at metallic copper saturation, maintaining the %Fe in the electric furnace matte between 6 wt.% and 9 wt.%, not exceeding a slag temperature of 1250°C, and controlling the Fe/SiO 2 ratio in the smelting furnace slag at ≤1.5. In addition, magnetite reduction needs to be performed efficiently during the slag-cleaning cycle so as to ...

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The Smelting of Copper-Nickel Concentrates in an Electric ...

smelting of copper-nickel concentrates in a 19.5 MVA furnace with six in-line electrodes. The matte- and slag-tapping temperatures, slag temperatures, slag analyses, electrical data, and electrode position were measured. Radioactive tracers were introduced into the slag, and quantitative results relating to the flow pattern within the furnace were obtained. These studies were augmented by ...

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MECHANISM OF BUILDUP FORMATION IN AN ELECTRIC

The copper slag cleaning in an electric furnace is based on slag reduction and settling of copper matte inclusions. Copper recovery depends on the slag temperature, degree of magnetite reduction and slag residence time. The formation of solid buildup on the furnace hearth leads to the decrease of furnace volume and slag residence time, affecting copper recovery and furnace capacity. The ...

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Cleaning of Copper Smelting Slag in Chile--《World ...

1: Wei Guozhong;W.Wuth;Ye Guorui;Impoverishment of Copper Converter Slags by a Laboratory D. C Electric Furnace[J];;1989-04 2: WANG Heng Tongling Design and Research Institute of Non-ferrous Metals, Tongling 244000, China;Recovery of copper and iron in the converter slag from a copper smelter[J];Journal of Guangdong Non-ferrous Metals;2003-02 3: YU Shui-jing,GUO Yan-hua,SONG

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Influence of slag composition on reduction control and ...

by carbothermic reduction, in the electric slag-cleaning furnaces (ESCF). In the first electric furnace (20 MVA), called the SCF (slag-cleaning furnace), copper oxide is reduced to produce blister copper (98.25% Cu) and slag containing 3 to 5% Cu, 0.78% Co. The slag from the

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COPPER CONCENTRATES: SMELTING TECHNOLOGIES UPDATE

Smelting technologies Copper concentrates market Concluding remarks . INTRODUCTION Chilean Copper Commission 01. INTRODUCTION •Sulphide copper accounts for almost 80 percent of world mine production and more than 2/3 of Chilean production and its expected to grow its share over the time. •Smelting arise as a strategic process for copper producer countries. Chile maintains around 9

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Minimization of Copper Losses in Copper Smelting Slag ...

electric furnace cleaning of copper smelting slag. The following recommendations are developed . based on the current work combined with the au

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Cleaning of a copper matte smelting slag from a water ...

Cleaning experiments of a copper matte smelting slag from the water-jacket furnace was undertaken by direct reduction in a laboratory-scale electric furnace. The effects of coal-to-slag ratio, w, and the reduction time, t, were considered for two different coal/slag mixing procedures. In the first procedure, metallurgical coal was added to the ...

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Slag cleaning in crossed electric and magnetic fields ...

01/01/2007  Slags from smelting of copper concentrate contains from 2% to 20% of copper and are directed to slag cleaning operation carry out in electric furnaces or other slag cleaning reactors with injection of carboneous reductant. Ionic structure of liquid slags points out the possibilities of utilization of slag electrolysis in reduction of magnetite and precipitation of dissolved copper

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Copper Loss in Slag - researchgate.net

Slag from an electric slag cleaning furnace was injected with methane and air mixtures to facilitate the recovery of copper and cobalt. The effects of methane-to

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Characterisation of the Effect of Al2O3 on the Liquidus ...

Keywords: slag liquidus, phase equilibrium, copper slag, slag cleaning, slag impurities 1. Introduction The direct-to-blister copper smelting process is currently used commercially in three smelters, i.e. Olympic Dam (Australia), Glogow II (Poland), and Chingola (Zambia). 1) The process involves the oxidation of copper concentrates in a flash furnace to produce copper blister and high-copper ...

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The Smelting of Copper-Nickel Concentrates in an Electric ...

smelting of copper-nickel concentrates in a 19.5 MVA furnace with six in-line electrodes. The matte- and slag-tapping temperatures, slag temperatures, slag analyses, electrical data, and electrode position were measured. Radioactive tracers were introduced into the slag, and quantitative results relating to the flow pattern within the furnace were obtained. These studies

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BACKGROUND REPORT PRIMARY COPPER SMELTING Prepared

its copper content can be recovered in a slag cleaning furnace, often electric. The flash furnace offgas contains anywhere from 10 to 80 percent by volume sulfur dioxide (SO 2). In all domestic copper smelting facilities utilizing flash smelting technology, the valuable thermal energy in this

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Influence of slag composition on reduction control and ...

by carbothermic reduction, in the electric slag-cleaning furnaces (ESCF). In the first electric furnace (20 MVA), called the SCF (slag-cleaning furnace), copper oxide is reduced to produce blister copper (98.25% Cu) and slag containing 3 to 5% Cu, 0.78% Co. The slag from the first furnace is transferred to the second

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Process Description and Abbreviated History of Anglo ...

fired, fluidised bed hot-gas generators, to produce dry feed material for the electric furnaces and slag-cleaning furnace. For primary smelting, two electric furnaces are used, each with a rated capacity of 34MW. Furnace matte, containing the bulk of the base metal sulphides and PGMs,

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properties of copper slag pdf

Blends of copper slag with Portland cement generally possess properties equivalent to Portland cement containing fly ash, but very different to the silica fume incorporation. Non-magnetic. They reported that the utilization of copper slag in cement mortar and concrete is very effective and beneficial for all related industries, particularly in areas where a considerable amount of copper slag ...

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Copper Smelting Slag Cleaning in an Electric Furnace by ...

In view of the non-renewable reductant resources and carbon neutralization in the process of copper slag cleaning in an electric furnace, this study...

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Cleaning of a copper matte smelting slag from a water ...

Cleaning experiments of a copper matte smelting slag from the water-jacket furnace was undertaken by direct reduction in a laboratory-scale electric furnace. The effects of coal-to-slag ratio, w, and the reduction time, t, were considered for two different coal/slag mixing procedures. In the first procedure, metallurgical coal was added to the molten slag, whereas in the second procedure, coal...

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Physical chemistry of copper smelting slags and copper ...

Thermodynamic modelling was used in conjunction with the results of a sampling campaign to investigate the liquidus temperature and the copper losses in slag from the Teniente converter (TC) and from the slag cleaning electrical furnace (EF) at the Paipote smelter in Chile. The present paper (Part 1) describes the smelter flow sheet and discusses the results of thermodynamic calculations. The ...

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Recovery of Copper from the Slag of Khatoonabad Flash ...

Copper loss in the slag of Khatoonabad flash smelting furnace is estimated to be about 1-3 %. At present, the electric slag cleaning furnace is used for the recovery of copper from slag. However, due to low recovery efficiency of electric furnace along with high consumption of electrical energy and water, selection of a method to enable minimum ...

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PHYSICOCHEMICAL CHARACTERIZATION OF COPPER SLAG

discussion of slag cleaning is only relevant to sulphide smelters [8, 9]. Two cleaning techniques are in common use in sulphide smelters, electric furnace processing under reducing conditions and slow cooling and flotation. Metals recovered include copper, gold, nickel, cobalt and PGM’s [10, 11]. 3.

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The Smelting of Copper-Nickel Concentrates in an Electric ...

smelting of copper-nickel concentrates in a 19.5 MVA furnace with six in-line electrodes. The matte- and slag-tapping temperatures, slag temperatures, slag analyses, electrical data, and electrode position were measured. Radioactive tracers were introduced into the slag, and quantitative results relating to the flow pattern within the furnace were obtained. These studies were augmented by ...

More

Extractive Metallurgy of Copper

Electric Slag-Cleaning Furnace Details 167 9.8.5. Converting Furnace Details 168 9.8.6. Optimum Matte Grade 169 9.8.7. Process Control in Mitsubishi Smelting/Converting 169 9.9. The Mitsubishi Process in the 2000s 174 9.10. Summary 175 References 176 Suggested Reading 177 10. Direct-To-Copper Flash Smelting 179 10.1. Advantages and Disadvantages 179 10.2. The Ideal Direct-to-Copper

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ASI International - Products - Fluxes for Copper ...

Cleaning Fluxes for Aluminum-Bronze. AlucoFlux AB – Used with gas fired and electric induction furnaces on aluminum and manganese bronzes. Chemically cleans furnace walls, crucible walls and induction channels of oxides and slag build-up. Develops a fluid melting cover which gathers and dissolves oxides suspended in melt. Prevents excessive ...

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Minerals Free Full-Text Slags as Evidence for Copper ...

The mineralogical composition indicates that slags were the product of copper smelting. The slag compositions and morphologies are analogous to slags described from the Oberhalbstein (Graubünden, Switzerland) and the Trentino Alps (Italy) which are attributed to metallurgical exploitations of the Late Bronze Age. While the origin of the ore could not be determined, it may be related to ore ...

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METAL MINING TECHNOLOGY IN JAPAN 8

a difficulty with lowering the copper grade of slag, which necessitates the reprocessing of slag by slag cleaning furnace, or the application of a fl ash furnace fi tted with söderberg type electrodes, that is "a fl ash furnace with furnace electrodes" to lower the copper content of slag. 5. Worldwide diffusion of the fl ash furnace process

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