the thermodynamics of the process of copper smelting

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Thermodynamic considerations of copper smelting - Taylor ...

proposed processes. 2. Illustration of the copper smelting system by useof chemical potential diagrams. The thermodynamics of the copper smelting system, consisting of Cu-Fe-S-0-Si02, can best be illustrated by a chemical potential diagram in which sulphur and oxygen potentials (corresponding to log PS2 and log P02)...

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On the Thermodynamics of Continuous Copper Smelting ...

Dec 28, 2015 ... Coexistence between all four condensed phases and one atm. of SOz is found at about 1300°C. The results are discussed with emphasis on their application to continuous copper smelting. Tentative values for the activity coefficients of FeS in the matte and of Cu2O in the slag are calculated.

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A Survey of the Thermodynamics Copper Smelting - Springer Link

Progressive Oxidation and Desulphurization of. Copper-bearing Liquid Phases: The chemical activi- ties of sulphur and oxygen are two of the most important thermodynamic yardsticks to be applied to copper smelting processes. Virtually the entire smelting and refining sequence involves a series of systems characterized...

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Thermodynamic Analysis of Separating Synchronously Copper and ...

The occurrence state changes and the possibility of synchronous separation of the components with copper and iron were researched by detailed calculation and derived, from the thermodynamics point of view in the oxidation modification process of copper smelting slag. The relationship between oxygen and sulfur...

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Thermodynamic Analysis of Separating Synchronously Copper and ...

The occurrence state changes and the possibility of synchronous separation of the components with copper and iron were researched by detailed calculation and derived, from the thermodynamics point of view in the oxidation modification process of copper smelting slag. The relationship between oxygen and sulfur...

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development of a thermodynamic database for copper smelting and ...

such thermodynamic database and software will be able to raise the process automation to a new level. The goal of this thesis is the development of the database able to predict the thermodynamic properties and phase equilibria in the basic chemical system for the pyrometallurgical copper production, which is the...

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THERMODYNAMICS OF THE COPPER-IRON - DSpace@MIT

The thermodynamic activity of sulfur was measured in the copper-iron-sulfur ... Procedure. Test§s;of'-E4uilibrium. EXPERIMENTAL PROCEDURE. General. One Phase Melts. Two Liquid Phase Melts. Two Liquid Melts in Equilibrium with. Solid Iron. EXPERIIENTAL ..... copper smelting process. His brief treatment of the...

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Physical Chemistry of Copper Smelting Slags and Copper Losses at ...

Dec 19, 2017 ... Physical Chemistry of Copper Smelting Slags and Copper Losses at the Paipote Smelter Part 1—Thermodynamic Modelling ... The impact of process parameters such as the Fe/SiO(2) ratio, the minor oxide levels in slag (CaO, Al(2)O(3), MgO and ZnO), the sulphur dioxide partial pressure p(SO(2)),...

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Reaction Mechanism and Distribution Behavior of Arsenic in ... - MDPI

Aug 5, 2017 ... smelters. In this work, the reaction mechanism and distribution behavior of arsenic in the bottom blown copper smelting process (SKS process) were investigated and compared to the flash smelting process. ... no work on the thermodynamic behavior of arsenic in the SKS process has been reported.

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Smelting reduction and kinetics analysis of magnetic iron in copper ...

May 25, 2017 ... Matousek J.M. summarized the effect of the reduction potential and Fe/SiO2 ratio on the carbon reduction process of molten copper slag at 1250 K and showed that the transformation of Fe3+ to ... The thermodynamics and kinetics of the CH4 reduction of molten copper slag was studied by Riveros G. et al.

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US4470845A - Continuous process for copper smelting and ...

A process and apparatus for continuous copper smelting, slag conversion, and production of blister copper in the same furnace by enriched oxygen containing gas ... The thermodynamic equilibria of the simultaneous oxidations, which take place during copper smelting and converting, require the three-step operation and...

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REMOVAL OF MERCURY ENABLES RECYCLE OF COPPER ...

Jun 20, 2002 ... The paper summarizes the results of interactive modeling of process and thermodynamic variables including: (1) process ... SapraOyne Process c +. Material with *I 0 ppm Hg,. Mercury lead and trace+ of gold and slhler. Figure 1. Copper mining and by-product recovery. Baseline mercury separation...

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Thermodynamic Evaluation of Distribution Behaviour of Arsenic in ...

Distribution behaviour of minor elements has important implications for copper making processes. The arsenic distribution among the three phases of gas, slag and matte was evaluated thermodynamically and is described in this article. The arsenic distribution is basically dependent on the process factors such as the...

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Mitsubishi Monitor 0206 GREEN DIAMONDS

A smelting process developed by Mitsubishi Materials is the world's cleanest and most energy-efficient way to refine copper. Copper and gold were the first ... Herbert H. Kellogg, a professor emeritus at New York's Columbia University, is renowned for his work in the thermodynamics of smelting. The following comments are...

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Phase equilibria studies of zinc-containing copper smelting slags ...

Jun 2, 2016 ... Phase equilibria studies of zinc-containing copper smelting slags PhD Thesis, School of Chemical Engineering, The University of Queensland. .... in smelting process have major impact on the fractional distribution behaviours of As and Zn. Thermodynamic calculation software - FactSage 6.4 was applied to...

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Copper Production — University of Utah

Section 2.1.1 covers the basic thermodynamic and kinetic principles involved in producing copper by high-temperature smelting processes. The section starts with the description of the stability of copper compounds relevant to the pyrometallurgical production of copper from the minerals and how it relates to the...

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Roasting of Copper Smelter Feed - 911 Metallurgist

Jun 5, 2017 ... Roasting, the first step in most copper smelters, is relatively inefficient as an arsenic removal process. Multiple-hearth roasters ... More recently thermodynamic calculations and experimental work suggested that the importance of sulfur lies in the fact that it prevents the formation of iron oxides. Trivalent iron...

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Master's Thesis 2016 - Aaltodoc - Aalto-yliopisto

the thermodynamics of the smelting needs to be investigated. Distribution coefficients for a vast amount of trace elements and other metals between lead and slag can be found from literature. These elements include copper, antimony, arsenic, tin, indium, germanium, silver, cadmium, zinc, cobalt, thallium and bismuth...

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Thermodynamic Modeling of Arsenic in Copper Smelting Processes

Sep 8, 2010 ... Thermodynamic Modeling of Arsenic in Copper Smelting. Processes. CHUNLIN CHEN, LING ZHANG, and SHARIF JAHANSHAHI. Published data on the activity coefficients of arsenic in liquid copper, matte and, slag have been reviewed, assessed, and used in the development of thermodynamic...

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Primary Metal Production

The Gibbs free energy (AG) of a reaction is a measure of the thermodynamic driving force that makes a reaction ..... difficult to melt, and so they will not form a proper slag easily, which retards the smelting process. To make these ..... pyrometallurgical techniques to smelt copper sulfides (and, in areas like the UP, by smelting.

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Unlocking Value in Copper Arsenic Sulphide Resources with ... - Teck

The CESL. Process offers an attractive method for processing arsenic-bearing copper concentrates. ... (Teck), Canada's largest diversified mining company and Aurubis, Europe's largest copper producer, ..... Chen, C., Zhang, L., Jahanshahi, S. (2010) Thermodynamic Modeling of Arsenic in Copper Smelting Processes.

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Minimization of Copper Losses in Copper Smelting Slag During ...

During the last few decades, the pyrometallurgical processes used for cleaning copper smelting slags have been steadily optimized. ... Three seminal studies during this era subsequently established the thermodynamics of copper smelting with particular attention to slag copper losses in the new high-grade matte...

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Pyrometallurgy | Hazen Research

In most instances, both phases are molten (such as the matte and slag in a conventional copper smelting operation). The gas phase may also be used to advantage, either as a means of separating valuable volatile constituents or for removing unwanted volatile impurities. These separation techniques form the basis of...

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Phase Relations, Activities and Minor Element Distribution in Cu-Fe ...

Dec 15, 2006 ... matte produced from the copper concentrate, and treating the occasionally generated speiss in nonferrous smelting processes, the phase relations in the Cu-Fe-S and ... the phase relations and thermodynamic properties in the Fe-. Cu-S-As ... among the matte, slag and gas phases in the copper smelting.

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High temperature phase equilibria in the Fe-Co-Cu-Si ... - CiteSeerX

By studying the phase equilibria and solution thermodynamics in liquid ferrocobalt new experimental data on the liquidus temperature and phase equilibria of the quaternary system can contribute to the improvement of existing copper slag smelting processes. This will alleviate the operational uncertainties and difficulties...

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Statistical modeling of copper losses in the silicate slag of the sulfide ...

Sep 1, 2015 ... This article presents the results of the statistical modeling of copper losses in the silicate slag of the sulfide concentrates smelting process. ... Keywords: modeling; copper concentrate; smelting process; copper losses; slag; ANFIS ... Copper losses and thermodynamic considerations in copper smelting.

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Process Control and Optimization in Ferrous and Non Ferrous Industry

new opportunities to thermodynamic simulation and optimization of complex metallurgical and chemical systems, allowing for the analysis of their domains of states and ..... other parameters which influence on the copper behavior during smelting process (physico-chemical characteristics of melts, technological parameters...

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Distribution of Precious Metals During the Reducing ...

Feb 1, 2012 ... sulphide concentrates or with the pyrometallurgical treatment of copper scrap, smelting dust or other kind of materials containing copper as base component, high content of impurities and precious metals as minor elements. 2. Thermodynamic concepts. In the conventional pyrometallurgical process for the...

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Smelting - Wikipedia

Smelting is a process of applying heat to ore to melt out a base metal. It is a form of extractive metallurgy. It is used to extract many metals from their ores, including silver, iron, copper, and other base metals. Smelting uses heat and a chemical reducing agent to decompose the ore, driving off other elements as gases or slag...

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10.1.3 Smelting, Melting, Casting and Alloying Copper - The First

This reaction consumes energy, i.e. cools the smelter. Two molecules of CO are produced for one molecule of CO2 and that is quite important for rather tricky thermodynamic reasons given here. The CO produced, streaming up through the burden, reduces the ore particles it meets as long as it is hot enough for that process...

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Yazawa's Diagram - The AusIMM

Sep 8, 2009 ... comprise thermodynamic potentials and at temperature T, pressure P and chemical potentials: μi ... Toronto ON M5S 1A1, Canada. FIG 1 - The Yazawa diagram for copper smelting and converting. (Yazawa ..... PSO2 may be fixed by process conditions, and the course of oxidation followed along such an...

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characterization and modification of the secondary copper smelting ...

the copper smelting process and the entire production loop. The phase relations and the viscosity of the slag system at the smelting condition influences the process in both kinetic and thermodynamic ways. The cooling process has a great impact on the final microstructure of the solidified slag and further affects the...

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Process Description - Smelting | Home - IsaSmelt

The submerged lance exhibits all the thermodynamic advantages of a tuyere with none of its engineering disadvantages. During the ... The products of the smelting ISASMELT™ process are tapped from the bottom of the furnace through a water-cooled taphole. ... Tapping copper matte from Primary Copper ISASMELT™.

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thermodynamic aspects of chemical reactions, as ... - Eprints@NML

APPLIED TO THE SMELTING AND REFINING OF LEAD. A. B. CHATTERJEA ... mical reactions involved in different metallurgical processes. Thermodynamics thus provides a useful method of predeter- mining the possibility of a chemical reaction to occur under ..... like copper, zinc and lead, the reaction. MS + 9 02 = MO +...

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Pyrometallurgy - Hatch

Hatch pyrometallurgy capabilities include: process development, test work planning, support and scale-up to commercial design criteria, pilot plant design and ... In copper smelting, concentrates are becoming "dirtier," needing a wider range of more innovative solutions to remove impurities and maintain product quality.

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Ferrous Smelting - TSpace - University of Toronto

pyrometallurgy, which addnsJed the thermodynamic principles and how the pertinent factors such as temperature, oxygen and sulfur pressure and activities of iroa and magnetite infiueaccd the age old problems of magnetite saturation. One of the main objectives of this study was to poovide a sound investigation and.

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Effect of Na2CO3 Addition on Carbothermic Reduction of Copper ...

Title: Effect of Na2CO3 Addition on Carbothermic Reduction of Copper Smelting Slag to Prepare Crude Fe-Cu Alloy. Authors: Guo, Zhengqi; Zhu, Deqing; Pan, Jian; Yao, Weijie; Xu, Wuqi; Chen, Jinan. Affiliation: AA(School of Minerals Processing and Bioengineering, Central South University), AB(School of Minerals...

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investigation of mechanism and kinetics of chalcopyrite concentrate ...

The roasting of chalcopyrite, the most exploited cop- per mineral, presents a very important step in the copper extraction during the traditional smelting-refining pro- cess, as well as in advanced processes in copper metalurgy [1-2]. Consequently, numerous researches have been in- vestigated, in order to study the...

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a study on reduction of copper slag from the flash furnace with the ...

Dec 29, 2013 ... In the paper, results of a study on reduction of blister copper flash smelting slag with the use of anthracite dust are presented. The material, following proper preparation, can be used for slag processing as a substitute for currently applied coke breeze. ... Based on a thermodynamic analysis, the equilibrium.

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Areas of expertise - The Aditya Birla Science and Technology ...

Aditya Birla Science and Technology Company's expertise spans a wide range of disciplines including material science, metallurgy, chemistry science, engineering, simulation technology and fibres.

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