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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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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.

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Minimization of Copper Losses in Copper Smelting Slag

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 minimizing...

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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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Slag Cleaning: The Chilean Copper Smelter Experience

In copper smelting, slag cleaning is performed by either of two major technologies: slag milling and flotation [2], or reduction followed by settling in an electric furnace [3]. In contrast, slags

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Minimization of Copper Losses in Copper Smelting Slag

21/09/2012· 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

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Effects of fluxing conditions on copper smelting slag cleaning

the pyrometallurgical processes used for cleaning copper smelting slags have been 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

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electric slag cleaning copper smelting JARBUD

electric slag cleaning copper smelting. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including quarry, aggregate, and different kinds of minerals. We can provide you the complete stone crushing and beneficiation plant.We also supply stand-alone crushers, mills and beneficiation

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Comprehensive review on metallurgical recycling and

To decrease the copper loss, a cleaning furnace (e.g. electric slag-cleaning furnace, rotary slag-cleaning furnace) is applied after the pyrometallurgical process, followed by a drain slag smelting furnace to clean the copper slag (Shiet al., 2008; Kierczak et al., 2013).

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Copper in solidified copper smelter slags

as cuprous oxide (or as sul phide) or forming a mechanical dis persion in slag. For slag cleaning by f roth flotation mineralogy and morphology of s olidified slag as well as chemical co mposition of copper bearing phases are of great interests. These phenomena are reviewed and discussed in this paper. 2 Introduction Copper smel ting and converting slags contain appre ciable a mount of copper

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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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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/SiO2 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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electric slag cleaning copper smelting JARBUD

electric slag cleaning copper smelting. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including quarry, aggregate, and different kinds of minerals. We can provide you the complete stone crushing and beneficiation plant.We also supply stand-alone crushers, mills and beneficiation

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Copper smelting combined with slag cleaning Inco

Copper smelting combined with slag cleaning applicant has found that the silica-based slags used in the patented process require a difficult slag cleaning operation in an electric furnace or slow cooling and flotation of copper metal to achieve good copper recovery. In addition, when blister copper is produced from iron-containing materials, the silica-based slags are viscous and contain

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VISCOSITY AND ELECTRIC CONDUCTIVITY OF COPPER SLAG

conditions in the slag cleaning process in an electric furnace. The results obtained on viscosities and electric conductivities are in general agreement with the properties of the fayalite slags reported in the literature. 226 CHAPTER 01 Physical Properties INTRODUCTION Optimal control of the slag chemistry in the copper converting and smelting is one of the important issues influencing

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Comprehensive review on metallurgical recycling and

It was revealed that although copper losses could be controlled typically at the level of 0.55–1.3 wt.%, depending on the optimisation of the copper smelting condition, followed by a subsequent electric cleaning furnace, the final slag, as well as other historically abandoned copper slag still contained large amounts of valuable metals, such as Fe, Cu, Zn, Ni, and Co, and toxic elements

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Improving Copper Recovery from Production Slags by

Keywords: slag cleaning, stirring mode, copper slag, submerged arc furnace, stirring reactor Abstract Slags resulting from pyrometallurgical copper processes are important by-products to be controlled in structure and composition. Due to the significant volumes of slag compared with those of the target metal it is mandatory as already practiced today to use the slag as a product e.g

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“Physicochemical characterization of copper slag and

Copper smelting, residual metal recovery, stockpile elimination, by-product recovery. 1. Introduction . Ferrous and non ferrous slags have been the subject of research for some time seeking uses in a wide spectrum of possible applications [1]. Most of the copper produced in the world (80% 90%)- is coming from sulphide ores that require oxidation at high temperatures requiring pyrometallurgy

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Minimizing of copper losses to converter slag by a

01/11/2019· Slag settling in electric furnace is widely used to recover copper from slags during the copper production, which is operated immediately after smelting of concentrate to obtain a long settling duration for suspended matte droplets. Therefore, colemanite can also be added in this step to reveal matte-slag separation by helping to adjust the viscosity of slag.

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OF AN IDEAL SMELTER

smelting, slag cleaning, and converting operations can be carried out continuously under "ideal conditions" for efficient copper recovery and removal of impurities. Furthermore, the adoption of top blowing lances, and a special type of slag for the C-furnace are integral items that make continuous operations possible. The following section

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