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Abstract

Copper dust from the Indian Copper Complex, Ghatsila is water leached and the residue is subjected to leaching by sulphuric acid solution. Effects of various parameters on H₂SO₄ leachings of water leached residue (WLR) and as received copper dust have been investigated to obtain optimum conditions for leaching. Under optimum conditions, bulk leachings of WLR and as received copper dust by H₂SO₄ solutions have been carried out. Leaching of 150 g WLR by 1 dm³ of 15% (v/v) H₂SO₄ at 353 K for 4 h under reflux yields 1 dm³ leached solution containing 43·12, 16·20, 22·14, 0·40, 0·02, 0·04 and 0·12 g dm⁻³ Cu²⁺, Fe²⁺, Fe³⁺, Zn²⁺, Co²⁺, Ni²⁺ and Al³⁺ respectively, together with 0·90M unreacted H₂SO₄. Also, leaching of 160 g as received copper dust by 1 dm³ of 10% (v/v) H₂SO₄ at 353 K for 4 h under reflux yields a leach solution containing 44·30, 9·00, 15·70, 0·40, 0·15, 0·03 and 0·11 g dm⁻³ Cu²⁺, Fe²⁺, Fe³⁺, Zn²⁺, Co²⁺, Ni²⁺ and Al³⁺ respectively, together with 0·90M free H₂SO₄. The iron contents of these solutions have been reduced to the levels of <0·5 g dm⁻³ by applying D2EHPA extraction–oxalic acid stripping technique so that the solutions can be used as electrolytes in electrorefining, electrowinning or hydrogen reduction of copper.

Keywords

ACID LEACHING OF COPPER DUST COPPER-IRON SEPARATION D2EHPA TOLERABLE IRON CONTAINING ELECTROLYTE

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References

Dennis

W. H.

: ‘Metallurgy of the non-ferrous metals’, 2nd edn, 111, 118; 1961, London, Sir Issac Pitman & Sons Ltd.

Newton

and Wilson

C. L.

: ‘Metallurgy of copper’, 237, 244-246; 1942, London, Wiley.

J.-J.

, Qui

R.-Y.

and Chen

C.-Y.

: Hydrometallurgy, 1984, 12, 217–224.

Prater

J. D.

and Wells

J. S.

: ‘Processing of copper dust’, US Patent 4149880, 1978.

Kruesi

W. H.

and Kruesi

P. R.

: US Patent 5332560, 1993.

Nunez

, Espiell

and Roca

: Hydrometallurgy, 1985, 14, 93–103.

Sarkisyan

A. R.

, Burnazyan

A. S.

, Grigorian

O. A.

, Torosyan

E. E.

and Arutyunyan

M. A.

: Chem. Abstr., 79, 21982 and 82, 11559.

Gelman

: Erzmetall, 1983, 35, 229.

Hanks

, J. Van der Zel, P. Chesney and G. B. Harrris: Trans. Inst. Min. Metall C, 1979, 88C, 99–106.

10.

Shibasaki

and Hasegawa

: Hydrometallurgy, 1992, 30, 45–57.

11.

Gorai

, Jana

R. K.

and Khan

Z. H.

: Mater. Trans. (Jpn Inst. Met.), 2002, 3, 532–540.

12.

Biswas

R. K.

and Jana

R. K.

: Trans. Inst. Min. Metall C, 2004, 113C, 45–52.

13.

Biswas

A. K.

and Davenport

W. G.

: ‘Extractive metallurgy of copper’, 2nd edn, 61, 65; 1980, Oxford, Pergamon.

14.

Nagamori

and Habashi

: Metall. Trans., 1974, 5, 523–527.

15.

Prasad

and Pandey

B. D.

: Can Metall. Q., 1999, 38, 237–247.

16.

Fisher

B. M.

, Matson

R. F.

and Touro

F. J.

: in ‘Extractive metallurgy of copper’, (ed. Yannopoulos

J. C.

and Agarwal

J. C.

), Vol. 2, 814–824; 1976, New York, NY, TMS.

17.

Kruesi

P. R.

, Allen

E. S.

and Lake

J. L.

: Can. Inst. Min. Metall. Bull., 1973, 66, 81.

18.

Muhn

M. C.

, Arbiter

and Kling

: Can. Inst. Min. Metall. Bull., 1974, 67, 62.

19.

Gockmann

: Can. Inst. Min. Metall. Bull:, 1992, 85, 150.

20.

Griffith

W. A.

, Day

H. E.

, Jordon

T. S.

and Nyman

V. C.

: J. Met., 1975, 27, 17.

21.

Duyvesteyn

W. P. C.

and Sabacky

B. J.

: Proc. Paul E. Queneau Int. Symp. on ‘Extractive metallurgy of copper, nickel and cobalt’, (ed. Reddy

R. G.

and Weisenbach

R. N.

), Vol. 1, 881–910; 1993, Warrendale, PA, TMS.

22.

Creighton

H. J.

and Koehler

W. A.

: ‘Electrochemistry’, 3rd edn, Vol. 2, 162; 1935, New York, Wiley.

23.

Bray

J. L.

: ‘Non-ferrous production metallurgy’, 2nd edn, 211; 1959, New York, John Wiley & Sons and London, Chapman & Hall Ltd.

24.

Davenport

W. G.

, King

, Schloringer

and Biawas

A. K.

: ‘Extractive metallurgy of copper’, 4th edn, 276; 2002, Oxford, Elseivier Science Ltd.

25.

Newton

: ‘Extractive metallurgy’, 467; 1967, New York, London, Sydney, John Wiley.

26.

Kumari

, Agarwal

, Bagchi

, Kumar

and Pandey

B. D.

: in ‘Emerging trends in mineral processing and extractive metallurgy’, (ed. Misra

V. N.

et al), 320–330; 2005, New Delhi, Allied Publishers.

Processing of copper dust for tolerable iron containing electrolyte

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