working of copper slag cleaning furnace

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Recovery of cobalt, nickel, and copper from slags, .

Mintek has been working on the recovery of cobalt, and the associated valuable metals, from slags, since 1988, using DC-arc furnace technology to effect selective carbothermic reduction of the oxides of cobalt, nickel, copper, (and zinc, where present), while retaining the maximum possible quantity of iron as oxide in the slag.

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Mining Weekly - Slag-cleaning furnace

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 ...

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Latest results of the slag cleaning reactor for copper ...

LATEST RESULTS OF THE SLAG CLEANING REACTOR FOR COPPER RECOVERY 199 The slag velocity is similar. The results of CFD modelling (Figure 3 and 4) for a large furnace show very high slag velocities (up to 0.08 m/s) below the electrode at low magnetic field values (0.01 tesla). The second part of the channel furnace has a

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Slag-cleaning furnace - Mining Weekly

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 ...

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Kinetics of Copper Reduction from Molten Slags

Keywords: Fayalitic slags, slag cleaning, carbothermic reaction, composition, reduction, Cu 2 O, FeO x. The objective of this thesis was to study the process of reduction of cuprous oxide by carbon from copper flash smelting slags. The flash smelting and slag cleaning processes are .

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copper slag cleaned machine - debruijnwijnimport

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. Get Price

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(PDF) DESIGN OF COPPER COOLING SYSTEMS FOR .

02-09-2019· 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.

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Characteristics and utilisation of copper slag—a .

01-11-2003· Jones et al. (1996) reported the recovery of metals, such as nickel, cobalt, and copper in an alloy by treating the copper slag with a carbonaceous reducing agent in a DC arc furnace. Pilot plant test work at Mintek (South Africa) has demonstrated recoveries of 98% nickel and 80% cobalt at the power levels of up to 600 kW and maximum possible quantity of iron oxide in the slag.

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Operating method for slag cleaning furnace in .

03-05-1977· A process is provided for recovering in a slag cleaning furnace the copper from smelting furnace slags discharged from a smelting furnace for copper refinery, said process being characterized in that zinc removed tailings are charged into said slag smelting furnace in an either continuous or discontinuous manner, whereby the copper recovery may be improved and valuable metals may also .

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Effects of fluxing conditions on copper smelting slag cleaning

extensively investigated. 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 0.6 - 1.3 wt%, with most plants reporting copper losses in the discard slag in the range of 0.8 - 1.0 wt% [1-3].

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Cleaning of a copper matte smelting slag from .

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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machinery for recovering copper from furnace slags

copper is recovered from copper-containing slag by putting the matte and slag in a molten state together in a slag treating furnace at a volume ration of more than 1:5, the melts in the furnace being maintained under agitation so that the slag and matte are in intimate contact so as to efficiently transfer copper from the slag to the matte.

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milling and flotation of slow cooled copper slag

Slag cleaning: ⇒ Slow cooling & flotation. ⇒ Electric furnace, ..... milled and the flotation concentrate obtained is a copper-rich portion which is returned... Read More Recovery of cobalt, nickel, and copper from slags, using DC-arc ...

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COPPER SMELTER PROJECTS & SERVICES

Cleaning copper spills De-bricking of MSEF furnace roof ... Removed working Hearth and sidewalls from Skew back up of the permanent lining Matte Settling Furnaces. Matte Settling Furnaces Precast Launders Pre-dried up to 650 oC ... Flash & Slag Cleaning Furnaces ...

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REUTILISATION OF PRIMARY METALLURGICAL WASTES: COPPER .

Slag cleaning in slag cleaning furnace: pulverised coal is injected and temperature maintained with oxygen-fuel burners. Coal reduces the content of magnetite and slag viscosity. Copper particles are released to form a rich copper matte (>70% Cu) Slag cleaning in an electrical furnace: Copper is .

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Blast Furnace: Introduction, Definition, .

The bottom half of the furnace possesses water cooler copper tuyeres, bustle pipe and the equipment to collect slag and liquid iron. This compartment is generally termed as 'cast house'. A tap is inserted in the refractory clay plug so that to make the flow of the liquid iron and slag through a 'skimmer' which spates iron and slag.

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Improving Beneficiation of Copper and Iron from Copper ...

2.1.1. Copper Slag The copper slag used in the experiments is a byproduct generated during the cleaning of electric furnace slag and refining of copper in Tongling Non-ferrous Metals Group Holding Co., Ltd (Tongling, China). As shown in Table1, the main chemical compositions contained in the waste slag are 42.85 wt. %

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Blast furnace - Wikipedia

A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron, but also others such as lead or copper. Blast refers to the combustion air being "forced" or supplied above atmospheric pressure.. In a blast furnace, fuel (), ores, and flux are continuously supplied through the top of the furnace, while a hot blast of air (sometimes with ...

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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 the reduction of the matte and metal level in the slag.

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cleaning chemicals slags furnace - jerabyflasz.cz

Induction Furnace Cleaning Of Copper Slag. Slag Cleaning Furnace - Bbdejavu.Be. Slag cleaning furnace copper rich oxide slags are melted in electric arc furnace where coke and copper pyrite are added to reduce the copper content in the slag in order to increase the reaction rate the slag are over heated producing low

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MICROSTRUCTURE CHARACTERISATION OF FREEZE LININGS .

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.

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Cleaning of a copper matte smelting slag from a .

30-05-2009· 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.

read more

Effects of fluxing conditions on copper smelting slag cleaning

extensively investigated. 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 0.6 - 1.3 wt%, with most plants reporting copper losses in the discard slag in the range of 0.8 - 1.0 wt% [1-3].

read more

Latest results of the slag cleaning reactor for copper ...

LATEST RESULTS OF THE SLAG CLEANING REACTOR FOR COPPER RECOVERY 199 The slag velocity is similar. The results of CFD modelling (Figure 3 and 4) for a large furnace show very high slag velocities (up to 0.08 m/s) below the electrode at low magnetic field values (0.01 tesla). The second part of the channel furnace has a

read more

Minimization of Copper Losses in Copper .

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 0.81.0 wt.%.

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Application of Beneficiation Technology in the .

The properties of copper slag of the slag cleaning furnace in Guixi smelter is presented in this paper and the technical difficulties to treat electric furnace slag by conventional beneficiation methods are also analyzed.The advanced beneficiation process flow in Guixi smelter is introduced and the production application is stated too,Which proves this technology can gring obvious advantages ...

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MICROSTRUCTURE CHARACTERISATION OF FREEZE LININGS .

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

Minimization of Copper Losses in Copper .

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 0.81.0 wt.%.

read more

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 the reduction of the matte and metal level in the slag.

read more

copper slag cleaned machine - debruijnwijnimport

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. Get Price

read more
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