Lime-concentrate process for roasting of copper-bearing sulphides - Part 1: Analysis of optimum roasting conditions

B. S. Terry; G. Riveros; M. Sanchez; J. H.E. Jeffes

Lime-concentrate process for roasting of copper-bearing sulphides - Part 1: Analysis of optimum roasting conditions

B. S. Terry, G. Riveros, M. Sanchez, J. H.E. Jeffes

Research output: Contribution to journal › Article › peer-review

Abstract

An analysis has been made of the optimum conditions for the roasting of chalcopyrite with air in the presence of lime commensurate with conversion to CuO and minimum evolution of SO₂. The analysis comprises assessments of the thermodynamics of the reactions of copper-iron sulphides with lime, the feasibility of copper ferrite formation and heat balances for the relevant roasting reactions. Thermodynamic considerations indicate that the roasting of CuFeS₂ with CaO and air to produce Fe₂O₃, CaSO₄ and CuO, CuSO₄ or CuO.CuSO₄ will occur readily. The exothermic nature of the reactions of copper-iron sulphides with lime results in favourable heats of reaction and they can proceed without any additional form of energy.

Original language	English
Pages (from-to)	C193-C200
Journal	Transactions of the Institution of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy
Volume	103
Publication status	Published - Sep 1994
Externally published	Yes

ASJC Scopus subject areas

Chemistry(all)
Geotechnical Engineering and Engineering Geology
Geochemistry and Petrology

Cite this

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title = "Lime-concentrate process for roasting of copper-bearing sulphides - Part 1: Analysis of optimum roasting conditions",

abstract = "An analysis has been made of the optimum conditions for the roasting of chalcopyrite with air in the presence of lime commensurate with conversion to CuO and minimum evolution of SO2. The analysis comprises assessments of the thermodynamics of the reactions of copper-iron sulphides with lime, the feasibility of copper ferrite formation and heat balances for the relevant roasting reactions. Thermodynamic considerations indicate that the roasting of CuFeS2 with CaO and air to produce Fe2O3, CaSO4 and CuO, CuSO4 or CuO.CuSO4 will occur readily. The exothermic nature of the reactions of copper-iron sulphides with lime results in favourable heats of reaction and they can proceed without any additional form of energy.",

author = "Terry, {B. S.} and G. Riveros and M. Sanchez and Jeffes, {J. H.E.}",

year = "1994",

month = sep,

language = "English",

volume = "103",

pages = "C193--C200",

journal = "Transactions of the Institutions of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy",

issn = "0371-9553",

publisher = "Maney Publishing",

}

Lime-concentrate process for roasting of copper-bearing sulphides - Part 1 : Analysis of optimum roasting conditions. / Terry, B. S.; Riveros, G.; Sanchez, M.; Jeffes, J. H.E.

In: Transactions of the Institution of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy, Vol. 103, 09.1994, p. C193-C200.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Lime-concentrate process for roasting of copper-bearing sulphides - Part 1

T2 - Analysis of optimum roasting conditions

AU - Terry, B. S.

AU - Riveros, G.

AU - Sanchez, M.

AU - Jeffes, J. H.E.

PY - 1994/9

Y1 - 1994/9

N2 - An analysis has been made of the optimum conditions for the roasting of chalcopyrite with air in the presence of lime commensurate with conversion to CuO and minimum evolution of SO2. The analysis comprises assessments of the thermodynamics of the reactions of copper-iron sulphides with lime, the feasibility of copper ferrite formation and heat balances for the relevant roasting reactions. Thermodynamic considerations indicate that the roasting of CuFeS2 with CaO and air to produce Fe2O3, CaSO4 and CuO, CuSO4 or CuO.CuSO4 will occur readily. The exothermic nature of the reactions of copper-iron sulphides with lime results in favourable heats of reaction and they can proceed without any additional form of energy.

AB - An analysis has been made of the optimum conditions for the roasting of chalcopyrite with air in the presence of lime commensurate with conversion to CuO and minimum evolution of SO2. The analysis comprises assessments of the thermodynamics of the reactions of copper-iron sulphides with lime, the feasibility of copper ferrite formation and heat balances for the relevant roasting reactions. Thermodynamic considerations indicate that the roasting of CuFeS2 with CaO and air to produce Fe2O3, CaSO4 and CuO, CuSO4 or CuO.CuSO4 will occur readily. The exothermic nature of the reactions of copper-iron sulphides with lime results in favourable heats of reaction and they can proceed without any additional form of energy.

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VL - 103

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JO - Transactions of the Institutions of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy

JF - Transactions of the Institutions of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy

SN - 0371-9553

ER -

Lime-concentrate process for roasting of copper-bearing sulphides - Part 1: Analysis of optimum roasting conditions

Abstract

ASJC Scopus subject areas

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