Reduction of copper oxide is an important step of metal recovery and slag cleaning in copper production. This can be achieved by slag treatment with injected reducing agents.

To improve the utilization of reduction agent and reduce the raw material cost, a novel slag cleaning method of recovering copper from copper converter slag with …

The SCF slag is. processed for copper-cobalt recovery to produce a copper-. cobalt-iron alloy in the cobalt recovery furnace (CRF). The. CRF process aims to obtain a final slag of approximately. 0 ...

A significant source of copper losses from pyrometallurgical copper extraction is attributed to dissolved and entrained copper in discarded slag. Entrained copper can be recovered via pyrometallurgical slag cleaning in a settling furnace, where the slag viscosity and copper droplet size distribution (CDSD) are critical parameters. …

The developed new concept of slag cleaning combines DC furnace technology with an extra magnetic field for vigorous slag stirring, enhancing mass transfer to the re-ductant …

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]. The latter process has the advantage of ...

Direct reduction of a copper matte smelting slag from a water-jacket furnace was undertaken in this study by utilising the latent heat energy of the molten …

Slag Viscosity Optimization. ... This ensures that the next stage of processing can commence immediately after the molten steel is discharged from the furnace. 6. Environmental Cleaning and Safety Inspection. ... Things you need to know about induction furnace for copper melting. 1. How Induction Furnaces. Read More …

The system consists of an N 2 gas cylinder, a vacuum pump, a vertical quartz tube reactor, a vacuum induction furnace, and a water cooler. Turn on the chiller to make the vacuum furnace in a protected state. ... An affordable and environmentally friendly process is developed to recover Fe from copper slag using rubber seed oil as a …

Copper slag, a waste solid produced in the copper smelting process, is a high-quality secondary resource with huge output. The recycling and utilization of copper slag is of great interest because it avoids the loss of valuable metals and the threat of harmful metals, and saves a lot of natural resources and energy. This paper firstly …

Copper Slag cleaning furnaces are commonly connected to copper smelting units such as Teniente and Noranda converters and Outokumpu flash smelters. The main function of the furnace is the reduction of the copper level in the slag11. SMS Demag's furnaces are designed for a reduction of the copper level from 1–8 % down to 0.6– 0.9%.

Section snippets Generation and cleaning of copper slag. Copper pyrometallurgy, which is the primary method for the production of copper can be classified into different types, such as conventional copper smelting process (e.g. blast furnace smelting, reverberatory furnace smelting, and electric-furnace smelting), and modern …

Copper slag is inevitably produced by slag cleaning furnaces as a final byproduct; this type of setup is widely used in the sand-blasting industry. Although waste copper slag has several advantages as a raw material for utilization in various applications, hazardous elements (e.g., As, Pb, Bi, Sb) are dispersed physicochemically within the slag.

Melting Methods. Coreless Induction Furnaces: The coreless induction furnace is a refractory-lined vessel with electrical current carrying coils that surround the refractory …

The purpose of this paper is to find differences in the performance of tuyeres and capillary plugs when they are used with high sulphur fuel oil (HSFO), natural gas, …

The coreless induction furnace is essentially a refractory-lined vessel surrounded by an electrically energized, current-carrying, water-cooled copper coil. Electrical current in the coil forms an electromagnetic field, generating thermal energy that melts the charge. The magnetic currents in the molten metal cause an intense stirring …

Slag of induction furnace is crushed in pulverizer. These pulverizer is generally used to make powder of hardened sand mould. Crushing is done by means of hammer mounted on roller. Metal is separated by use of plate type magnetic separator. Used for lifting & handling of ferromagnetic particles.

E. Crossin, The greenhouse gas implications of using ground granulated blast furnace slag as a cement substitute, Journal of Cleaner Production, 95 (2015) 101â€"108. [29] D. M. Sadek, Effect of cooling technique of blast furnace slag on the thermal behavior of solid cement bricks, Journal of Cleaner Production, 79 (2014) 134â€"141 ...

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 and settling. In the …

The melting process of induction furnace is relatively simple. Taking smelting alloy steel as an example, after tapping of the previous furnace, furnace body shall be maintained first, including cleaning residue, checking erosion, and repairing furnace lining, and then furnace burden should be prepared and loaded for melting.

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 advantage of the induction furnace is a clean, energy-efficient and well-controllable melting process compared to ...

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 …

The aim of this work is the analysis of the factors determining the efficiency of slag cleaning process in the electric furnace. The analysis has been focused on the impact …

Results are presented from studies of the reasons for the formation and growth of slag crusts in the crucibles of induction furnaces during the smelting of cast iron. It is established that crust formation and adhesion of slag to the furnace lining are caused by interaction of the lining material with reactants in the melt. The degree of slag …

IF steel slag is a secondary melting slag in which ferrous metal scrap and fluxes are melted using an electromagnetic field to produce steel/cast iron [22] and it generates 10–15% of by- product as slag. Induction furnace slag is not used in the cement/aggregate production due to its low content of CaO [23], it also has high content …

Copper slags are either air-cooled or water-quenched. Air-cooled slags are large (average particle size up to 12 mm), dense, stone-like, more crystalline and have lesser glass content (~37-45 % ...

To decrease the copper loss, a cleaning furnace (e.g. electric slag-cleaning furnace, rotary slag-cleaning furnace) is applied after the pyrometallurgical …

Here, however, the slag still contains some percentage of copper and it is treated in a slag concentrator, where rest of the copper is recovered as a slag concentrate and fed back into the smelting furnace. In KCM's Nchanga smelter, the Flash Smelting fur - nace slag is first reduced in a slag-cleaning furnace to a degree, where iron content ...

Recovery of copper in concentrates from slags cooled in the induction furnace and ground for 30 minutes ranged from 87.1 to 96.2 percent with the best recovery obtained on the highest grade slag …

For example, a ladle furnace slag content in soil exceeding 5 % affects the growth and physiological characteristics of amaranth (Pietrini et al., 2017). In addition, although replacing 30 % of cement with ladle furnace slag can inhibit the leaching of Cr and V in the cement, the leaching of Mo and Ba increases (Serjun et al., 2015). …