Desulfurization Rate during the Copper Blow in a Peirce–Smith Converter

Roselló, A.; Martínez, J.; Barrios, Patricio Apáez; Carrillo, Francisco

doi:10.1007/s11663-007-9113-7

Cited by 3 publications

(4 citation statements)

References 32 publications

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“…In general, the data were explained by accepting the control of the gas-side resistance, which has been considered consistent with the high oxygen utilization efficiency of the copper converter. Nevertheless, as has been stated before [1], the relationship between desulfurization rate and sulfur conversion during the copper blow in PS was incompatible with controlling resistance in the gas phase. The aim of this work is to obtain a new kinetic expression for the desulfurization of copper sulfide where the influence of temperature, gas flow rate, and oxygen pressure should be included.…”

Section: Introductionmentioning

confidence: 80%

“…So, greater shortenings of the operation time are possible at the end of the copper blow. The key factor is the gas flow rate, given that the oxygen pressure is not influent in that kinetic stage, that is, when x S > 0.9 [1]. Anyway, data of the bubbling reactor can only be correlated with those of the first kinetic stage in a PS converter.…”

Section: Discussionmentioning

confidence: 99%

“…Data of matte compositions during the copper-making stage in a Peirce-Smith (PS) converter proved that it behaved as a well-mixed tank for the melt and that the sulfur removal rates sharply dropped when very high conversions were achieved [1]. Two kinetics stages were proposed in order to quantify this change: in the range of sulfur conversion 0.00-0.90, the desulfurization rate and the oxygen efficiency remained constant, while with higher conversions, the oxygen efficiency and the desulfurization rate decreased when conversion increased.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Kinetic Comparison between Laboratory and Industrial Scales in the Copper Blowing Process

Roselló

Martínez²,

Carrillo

2009

Journal of Metallurgy

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An experimental investigation into the oxidation kinetics of molten sulfide has been conducted at laboratory scale to provide information concerning the influence of the gas feed (flow and oxygen pressure) and melt temperature on the desulfurization rate. Data showed that the reaction rate was strongly dependent on the gas flow rate and significantly from oxygen pressure, whereas the influence of temperature was negligible. The variation of the sulfur conversion with the operation time was similar to that found in industrial trials when "white metal" was blown to blister copper in a Peirce-Smith converter. A unique equation for both scales could be established. This correlation made it possible to calculate the operation time in the converter at different gas flow rates and oxygen enrichments.

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Section: Introductionmentioning

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Kinetic Comparison between Laboratory and Industrial Scales in the Copper Blowing Process

Roselló

Martínez²,

Carrillo

2009

Journal of Metallurgy

Self Cite

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“…The results of extensive studies of foreign experience in the processing of copper concentrates in converters [ [1], [2], [3]] showed wide opportunities for using the converter as a smelting unit, especially in the first period of converting copper matte. However, despite the achieved positive results, the introduction of the developed methods into production has a restriction due to the lack of effective devices for loading a fine concentrate into the converter.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the thermal regime of converting of copper-lead matte with high-sulfur copper concentrate

Zoldasbay,

Argyn,

Dosmukhamedov

2023

KIMS/CUMR/MShKP

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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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Experimental Determination of the Conversion Rate of Molten White Metal by Supplying Individual Air Bubbles

Roa-Jofré

Parra-Sánchez

Reyes

et al. 2022

Metals

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The conversion of copper sulfide mattes lacks fundamental kinetic information for understanding the process. This work presents the results of the experimental measurement of the rate of oxidation of molten white metal by supplying individual air bubbles. The bubbles were characterized from information collected during the experiments and through theoretical and empirical correlations. Conversion tests were carried out at different temperature conditions and injection dynamics of the oxidizing gas. The results indicate that the conversion is controlled by the transport of oxygen into the bubble. A dependency between the characteristics of the injector and the shape, size and surface of the bubbles was identified. The oxidation rate of the white metal depended on the characteristics of the bubbles and the oxygen available for conversion. The results of this research provide relevant information to improve the operation of industrial conversion furnaces by controlling gas injection through the tuyeres. The criterion for improving conversion systems is the balance between the retention of the bubbles in the molten white metal and their size, such that the availability of oxygen for the conversion is guaranteed.

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Desulfurization Rate during the Copper Blow in a Peirce–Smith Converter

Cited by 3 publications

References 32 publications

A Kinetic Comparison between Laboratory and Industrial Scales in the Copper Blowing Process

A Kinetic Comparison between Laboratory and Industrial Scales in the Copper Blowing Process

Analysis of the thermal regime of converting of copper-lead matte with high-sulfur copper concentrate

Experimental Determination of the Conversion Rate of Molten White Metal by Supplying Individual Air Bubbles

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