Analysis of the thermal regime of converting of copper-lead matte with high-sulfur copper concentrate
DOI:
https://doi.org/10.31643/2024/6445.19Keywords:
copper-lead matte, high sulfur copper concentrate, converting, material balance, thermal regime, sulfur, sulfiding.Abstract
According to the earlier conclusions about the possibility of direct processing of high-sulfur copper concentrates with copper-lead matte, analysis of the thermal regime of converting was carried out. It is shown that the traditional calculation methods used to calculate autogenous smelting are not entirely correct and require taking into account the effect of excess sulfur on the temperature regime of the process. It has been established that in the process of converting copper-lead mattes, a wide range of temperature variation is observed - from 1027 0С to 1300 0С. When the concentrate is combined with the matte, the temperature regime of the process is stabilized, which ensures the optimal level of SO2 concentration in the gases required for the production of sulfuric acid. Based on the calculation of the material balance of converting copper-lead mattes using the existing technology and with the addition of a concentrate, the structure of the heat balance of the converting process was established. A strong change in the structure of the heat balance is shown, which is explained by the reduction of magnetite with excess sulfur and an increase in heat due to the oxidation of an additional amount of iron sulfide introduced with the concentrate. A comparative analysis of the technological parameters of the 1st converting period of copper-lead mattes calculated by the proposed method with the practical data of a specific metallurgical unit allows assessing the degree of approximation of the processes occurring in the unit until the thermodynamic equilibrium.
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References
Rosello A, Martinez J, Barrios P, Carrillo F. Desulfurization rate during the copper blow in a Peirce-Smith converter. Metallurgical and Materials Transactions.2008; 39B:16-22.
Vieira L, Guzzo M, Bittencourt Marques M, de Souza M, Merdjani R, Kongoli F. Optimization and Control of Hoboken Converter Operations With FLOGEN CONTOP Control Expert System. Sustainable Industrial Processing Summit SIPS. Barrios Intl. Symp. Non-ferrous Smelting & Hydro/Electrochemical Processing. Montreal, Canada. 2017; 1:91-92.
Schlesinger ME, King MJ, Sole KC, Davenport WG. Extractive Metallurgy of Copper. 2011.
Bulatov KV, Skopov GV, Skopin DYu, Yakornov SA. Processing of Polymetallic Concentrates in Melting Facility “Pobeda” (LLC “Mednogorsk Copper-Sulfur Combine”). Non-ferrous Metals. 2014; 10:39-44.
Orlov AK, Konovalov GV, Boduen AYa. Pyrometallurgical Selection of Copper-Zinc Materials. Journal of Mining Institute.2011; 192:65-68.
Wang, S, Davenport W. World copper smelter data. In Copper 2019, Paper no 595947. Vancouver, BC: CIM, Montreal. 2019.
Taskinen P, Akdogan G, Kojo I, Lahtinen M, Jokilaakso A. Matte converting in copper smelting. Mineral Processing andExtractive Metallurgy.2019; 128(1-2):58-73. https://doi.org/10.1080/25726641.2018.1514774
Liu Z, Xia L. The practice of copper matte converting in China. Mineral Processing and Extractive Metallurgy.2019; 128:117–124. https://doi.org/10.1080/25726641.2018.1543147
Zhai X, Li N, Zhang X, Fu Y, Jiang L. Recovery of cobalt from converter slag of Chambishi copper smelter using reduction smelting process. Trans Nonferrous Met Soc. China. 2011; 21(10):2117-2121.
Dosmukhamedov N, Egizekov M, Zholdasbay E, Kaplan V. Metals Recovery from Converter Slags Using a Sulfiding Agent. JOM. 2018; 70(10):2400-2406.
Dosmukhamedov NК, Fedorov AN, Zholdasbay EE, Argyn AA. Investigation of Cu, Pb, Zn, As, Sb Distribution during the lead semiproducts and copper-zinc concentrate comelting. Non-ferrous Metals.2020; 1:8-14. https://doi.org/10.17580/nfm.2020.01.02
Dosmukhamedov NK, Argyn АA, Zholdasbay EE, Kurmanseitov MB. Behavior of Сu, Zn, Pb, As compounds during copper-zinc concentrate and matte comelting in converters. Non-Ferrous Metals.2020; 2(49):11-18.
Dosmukhamedov NK, Argyn AA, Zholdasbay EE. Behavior of copper compounds and associated metal impurities in the process of converting copper-lead mattes. Collection of scientific articles of the Interuniversity Scientific Congress "Higher School: Scientific Research".Moscow, Russia. 2020, 127-139.
Sohn HS, Fukunaka Y, Oishi T. Yazawa Int. Symp.: Metallurgical and Materials Processing. Principles and Technologies (I), KongoliF, ItagakiK, YamauchiC, and SohnHY, eds., TMS, Warrendale, PA. 2003, 131-146.
Demetrio S, Ahumada J, Durán MA, Mast E, Rojas U, Sanhueza J. Slag Cleaning: The Chilean Copper Smelter Experience. JOM.2000, 20-25.
Cardona N, Mackey PJ, Coursol P, Parada R, Parra R. Optimizing Peirce–Smith Converters Using Thermodynamic Modeling and Plant Sampling.JOM.2012;64(5).
CoursolP, Tripathi N, Mackey P, Leggett T. Can. Met. Quart. 2010;49(3):255-262.
Montenegro V, Sano H, Fujisawa T. Recirculation of high arsenic content copper smelting dust to smelting and converting processes. Minerals Engineering. 2013; 49:184-189.
Swinbourne DR, Kho TS. Computational Thermodynamics Modeling of Minor Element Distributions During Copper Flash Converting. Metallurgical and Materials Transactions. 2012; 43B:823-829.
Kubashevsky O, Alcock SV. Metallurgical thermochemistry. M.: Metallurgy.1982.
A.S. USSR 1534081. Device for supplying fine materials to a converter with a lateral gas outlet / Dosmukhamedov NK, Egizekov MG, Spitchenko VS et al. Opubl. 1990, 1.
Bagrova TA, Vaskevich AD, Zaitsev VYa, Kukoev VA. Homogeneity range and activity of the components of iron-silicate melts containing CaO and Al2O3. Nonferrous metals.1985;2:7-10.
Yazawa A. Can. Metal. Quart. Thermodynamic considerations of Copper smelting. 1974; 13:443-453.
Vaskevich AD, Sorokin ML, Kaplan VA. General thermodynamic model of copper solubility in slags. Nonferrous metals.1982; 10:22-26.
Bellemans I, De Wilde E, Moelans N, Verbeken K. Metal losses in pyrometallurgical operations -A review. Advances in Colloid and Interface Science. 2018; 255:47-63. https://doi.org/10.1016/j.cis.2017.08.001
Guntoro PI, Jokilaakso A, Hellstén N, Taskinen P. Copper matte-slag reaction sequences and separation processes in matte smelting. Journal of Mining and Metallurgy, Section B: Metallurgy.2008; 54B:(3):301-11. https://doi.org/10.2298/JMMB180214021G
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