copper slag cleaning furnace

copper slag cleaning furnace

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

2020-10-16  Copper slag cleaning using the flotation method and/or in an electric furnace is widely adopted in industrial production.[2,3,4,5] The flotation method has the advantages of low energy consumption and low copper content in the slag, but the waste

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

2009-5-30  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 ...

Read More
Dalmia - Slag Cleaning

Slag Cleaning Furnace. In this furnace, copper rich oxide slags are melted in electric arc furnaces and coke copper pyrite are added to reduce copper content in the slag. In order to increase reaction rate, slag is over-heated to produce low viscosity aggressive slag. Dalmia-OCL’s Co-clinker series Magnesia Chrome bricks have excellent ...

Read More
(PDF) Slag cleaning reactor for metal recovery in copper ...

example of conventional plant utilizing a submerged arc furnace for copper slag cleaning . and considering a copper price of approx. 3500 USD per ton of copper and a copper .

Read More
Minimization of Copper Losses in Copper Smelting Slag ...

2017-8-29  cal processes used for cleaning copper smelting slags have been steadily optimized. The electric furnace or rotary slag-cleaning furnace are now generally used to perform this task, giving a level of copper in dis-card slag typically in the range of 0.55

Read More
Minimization of Copper Losses in Copper Smelting Slag ...

2012-9-21  During the last few decades, the pyrometallurgical processes used for cleaning copper smelting slags have been steadily optimized. 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 ...

Read More
EFFICIENCY OF COPPER RECOVERY FROM A SLAG IN

2015-9-7  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. Efficiency of copper recovery from a slag in an electric furnace depends on number of factors. The furnace dimensions play significant role, determining slag circulation pattern

Read More
Diagnose for valorisation of reprocessed slag cleaning ...

2018-9-1  The commercial slag is produced in the slag cleaning furnace (SCF), where under high temperature (1250 °C) and reducing atmosphere its remaining copper content (5%, approximately) decrease (below to 1%), and flue dust, mainly enriched of Zn and Pb among other metals, is formed [Seetharaman et al., 2014, Schlesinger et al., 2011].

Read More
AC- AND DC- SMELTER TECHNOLOGY FOR FERROUS

2010-11-6  2006 Pilot plant DC slag cleaning unit for precious metals (PGM, Cu, Co, etc.) 2009 Development of largest DC-furnace for FeCr (70 MW) The following picture provides an overview installed AC- and DC- furnaces with the involvement of SMS Siemag. 2 x Enami, Chile 9, 11 MVA Copper Slag 2 x Enami, Chile 9, 11 MVA Copper Slag Larco, Greece Various ...

Read More
Operations Sterlite Copper (A Unit of Vedanta Limited)

Converter Slag is treated in a Slag cleaning furnace for recovery of copper. Blister Copper is further refined by oxidation and then by reduction to approximately 99.6% copper purity in the Anode Furnace, and cast as Copper Anodes. Gases produced at various stages are

Read More
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.

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

2009-5-30  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 ...

Read More
(PDF) Slag cleaning reactor for metal recovery in copper ...

example of conventional plant utilizing a submerged arc furnace for copper slag cleaning . and considering a copper price of approx. 3500 USD per ton of copper and a copper .

Read More
Slag-cleaning furnace - Mining Weekly

2001-9-7  Copper panels will cool the furnace sidewalls to protect them from slag conditions, a separate gas-cleaning plant being installed so that no additional load is placed on existing environmental ...

Read More
MECHANISM OF BUILDUP FORMATION IN AN ELECTRIC

2015-9-7  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

Read More
Recovery of cobalt, nickel, and copper from slags, using ...

2012-2-7  Conventional slag cleaning furnaces (typically AC submerged-arc) rely largely on a gravity settling mechanism, whereby the entrained sulphide and metallic droplets are simultaneously collected. Sometimes, a quantity of matte is added to the slag, to enhance the coalescence of entrained matte droplets. ... Copper reverberatory furnace slag - 200 ...

Read More
Operations Sterlite Copper (A Unit of Vedanta Limited)

Converter Slag is treated in a Slag cleaning furnace for recovery of copper. Blister Copper is further refined by oxidation and then by reduction to approximately 99.6% copper purity in the Anode Furnace, and cast as Copper Anodes. Gases produced at various stages are fully recovered and converted into Sulphuric Acid.

Read More
(PDF) DESIGN OF COPPER COOLING SYSTEMS FOR

The matte/slag tidal zone in a nickel-copper-iron-sulphide matte smelting furnace is subject to severe process conditions that can lead to premature failure of the lining.

Read More
Kinetics of Copper Reduction from Molten Slags

2014-10-27  invariably lead to significant copper loss in slag, which needs to be recovered by means of reduction and settling in a separate slag cleaning furnace. Reduction of iron oxides from slags using carbon as a reductant in the form of dissolved carbon in iron or graphite has been studied extensively by a large number of researchers. A number of

Read More
AC- AND DC- SMELTER TECHNOLOGY FOR FERROUS

2019-12-25  2006 Pilot plant DC slag cleaning unit for precious metals (PGM, Cu, Co, etc.) 2009 Development of largest DC-furnace for FeCr (70 MW) The following picture provides an overview installed AC- and DC- furnaces with the involvement of SMS Siemag. 2 x Enami, Chile 9, 11 MVA Copper Slag 2 x Enami, Chile 9, 11 MVA Copper Slag Larco, Greece Various ...

Read More
SMS group GmbH: Electric furnace for slag cleaning or ...

Electric furnace for slag cleaning or matte depletion. Typical of copper matte recycling furnaces are the semi-closed design and stationary installation. So far , SMS group has supplied more than 25 submerged-arc furnaces for slag cleaning and matte setting in circular and rectangular shapes. That means we have banked a lot of experience.

Read More
Factors Governing Slag Cleaning in an Electric Furnace ...

2013-7-18  Magnetite stratification and a corresponding gradient in copper content occurred in the slag. The experimental results, combined with an analysis of the phenomena taking place in an electric furnace, led to an improved understanding of the slag cleaning mechanism and contributed to the successful start up of the slag cleaning electric furnace ...

Read More
MICROSTRUCTURE CHARACTERISATION OF FREEZE

2015-2-2  lining microstructure forming on water cooled steel surface in a high-silica, slag cleaning furnace slag of a direct-to-blister copper smelter is mostly glassy or amorphous. It contains 5-30 µm magnetite crystals, very small and larger copper droplets as well as small magnetite and silicate nuclei embedded in the glassy silica-rich matrix.

Read More
Reduction of Magnetite from Copper Smelting Slag

The copper smelting slag reduction experiments were carried out in a slag cleaning electric furnace as shown in Fig. 1. Six electrodes were settled in the upper zone of the electric furnace. As the reducing agents, petro-diesel or biodiesel was sprayed into the copper smelting slag layer with nitrogen through the spray guns settled in two ends of

Read More
12.3 Primary Copper Smelting - US EPA

2021-6-25  Slag produced by flash furnace operations contains significantly higher amounts of copper than reverberatory or electric furnaces. Flash furnace slag is treated in a slag cleaning furnace with coke or iron sulfide. Because copper has a higher affinity for sulfur than oxygen, the copper in the slag (as copper oxide) is converted to copper sulfide.

Read More
Operations Sterlite Copper (A Unit of Vedanta Limited)

Converter Slag is treated in a Slag cleaning furnace for recovery of copper. Blister Copper is further refined by oxidation and then by reduction to approximately 99.6% copper purity in the Anode Furnace, and cast as Copper Anodes. Gases produced at various stages are fully recovered and converted into Sulphuric Acid.

Read More
Kinetics of Copper Reduction from Molten Slags

2014-10-27  invariably lead to significant copper loss in slag, which needs to be recovered by means of reduction and settling in a separate slag cleaning furnace. Reduction of iron oxides from slags using carbon as a reductant in the form of dissolved carbon in iron or graphite has been studied extensively by a large number of researchers. A number of

Read More
An Overview of Copper Smelting in Southern Africa

2015-6-18  reverberatory furnace in slag-cleaning mode pending a full evaluation of alternative slag-cleaning technologies. The anticipated cathode production from Nkana was to be in the range 140 to 150 000 tons per annum. Vedanta took over as the majority shareholder in Konkola Copper Mines (KCM)

Read More
Method of operating a copper smelting furnace - Nippon ...

As an example of a copper smelting furnace, FIG. 1 is a side view of an Outokumpu flash furnace and slag-cleaning furnace used at Nippon Mining and Metals Saganoseki Smelter Refinery. The flash furnace is comprised of three parts: a reaction shaft 1 having a burner 9 in the middle of the ceiling, a settler 2, and an exhaust pipe.

Read More
METAL MINING TECHNOLOGY IN JAPAN 8

2015-7-28  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

Read More