796
M. Maccagni and E. Guerrini
EAFD produced using a scrap pre-heating system is a particularly attractive feed.
The high zinc content and low ferrite concentration make in very close to CZO
without the added conversion step.
The EZINEX
® Process has already been proven on an industrial scale. The
INDUTEC
® thermal fuming process has been extensively tested, and it is based
on well-known steel industry smelting procedures. Other thermal fuming systems
are already in operation treating EAFD and their CZO product has been shown to be
an excellent feed for EZINEX
® .
Acknowledgements We would like to thank Cape Gate for giving us the opportunity to test once
again the EZINEX ® technology giving us the opportunity to improve the process introducing some
innovations.
References
1. Zunkel AD (2000) Recovering zinc and lead from electric arc furnace dust: a technology status
report. In: Stewart DL Jr, Daley JC, Stephens RL (eds) Fourth international symposium on
recycling of metals and engineered materials, Pittsburgh, Pennsylvania, U.S.A., pp 227–236
2. Palumbo FJ, Marsh RL, Gabler RC (1985) Recovery of metal values from copper converter
flue gas. USBM report of investigation 8995
3. Ralston OC (1921) Electrolytic deposition and hydrometallurgy of zinc, chap 7. McGraw-Hill
Book Co., New York
4. Burrows WH (1974) Zinc oxide recovery process. U.S. Patent No. 3.849.121, 19 Nov 1974
5. Grontoft F (1979) Electrowinning metals from chloride solutions. U.S. Patent No. 4.155.821,
22 May 1979
6. Prado FG, Prado FL (1992) Dezincing galvanised steel using a non corrosive low energy
hydrometallurgical system. In: Proceedings EDP Congress, TMS annual meeting, San Diego,
CA, USA, pp 1337–1344
7. Fray DJ, Thomas BK (1981) Zinc chloride electrolysis. U.S. Patent No. 4.292.147, 29 Sept
1981
8. Mackinnon DJ (1983) The electrowinning of metals from aqueous chloride electrolysis. In: Ossed-Asare K, Miller JD (eds) Proceedings of 3rd international symposium on
hydrometallurgy. The Metallurgical Society of AIME, pp 659–677
9. Olper M, Maccagni M (2000) Electrolytic zinc production from crude zinc oxide with the
EZINEX® process. In: Stewart Jr DL, Daley JC, Stephens RL (eds) Fourth international symposium on recycling of metals and engineered materials, Pittsburgh, Pennsylvania, U.S.A., pp
379–396
10. Olper M (1996) Zinc extraction from EAF dust with the EZINEX process. In: United Nations
Economic Commission for Europe (ed) Working party on steel, seminar on the processing,
utilisation and disposal of waste in steel industry, Balatonszèplak, Hungary
11. Olper M (1998) The EZINEX process—five years of development from bench scale to a
commercial plant. In: Dutrizac JE, Gonzalez JA, Bolton GL, Hancock P (eds) Zinc and lead
processing CIM, Calgary, Alberta, Canada, pp 545–560
M. Maccagni and E. Guerrini
EAFD produced using a scrap pre-heating system is a particularly attractive feed.
The high zinc content and low ferrite concentration make in very close to CZO
without the added conversion step.
The EZINEX
® Process has already been proven on an industrial scale. The
INDUTEC
® thermal fuming process has been extensively tested, and it is based
on well-known steel industry smelting procedures. Other thermal fuming systems
are already in operation treating EAFD and their CZO product has been shown to be
an excellent feed for EZINEX
® .
Acknowledgements We would like to thank Cape Gate for giving us the opportunity to test once
again the EZINEX ® technology giving us the opportunity to improve the process introducing some
innovations.
References
1. Zunkel AD (2000) Recovering zinc and lead from electric arc furnace dust: a technology status
report. In: Stewart DL Jr, Daley JC, Stephens RL (eds) Fourth international symposium on
recycling of metals and engineered materials, Pittsburgh, Pennsylvania, U.S.A., pp 227–236
2. Palumbo FJ, Marsh RL, Gabler RC (1985) Recovery of metal values from copper converter
flue gas. USBM report of investigation 8995
3. Ralston OC (1921) Electrolytic deposition and hydrometallurgy of zinc, chap 7. McGraw-Hill
Book Co., New York
4. Burrows WH (1974) Zinc oxide recovery process. U.S. Patent No. 3.849.121, 19 Nov 1974
5. Grontoft F (1979) Electrowinning metals from chloride solutions. U.S. Patent No. 4.155.821,
22 May 1979
6. Prado FG, Prado FL (1992) Dezincing galvanised steel using a non corrosive low energy
hydrometallurgical system. In: Proceedings EDP Congress, TMS annual meeting, San Diego,
CA, USA, pp 1337–1344
7. Fray DJ, Thomas BK (1981) Zinc chloride electrolysis. U.S. Patent No. 4.292.147, 29 Sept
1981
8. Mackinnon DJ (1983) The electrowinning of metals from aqueous chloride electrolysis. In: Ossed-Asare K, Miller JD (eds) Proceedings of 3rd international symposium on
hydrometallurgy. The Metallurgical Society of AIME, pp 659–677
9. Olper M, Maccagni M (2000) Electrolytic zinc production from crude zinc oxide with the
EZINEX® process. In: Stewart Jr DL, Daley JC, Stephens RL (eds) Fourth international symposium on recycling of metals and engineered materials, Pittsburgh, Pennsylvania, U.S.A., pp
379–396
10. Olper M (1996) Zinc extraction from EAF dust with the EZINEX process. In: United Nations
Economic Commission for Europe (ed) Working party on steel, seminar on the processing,
utilisation and disposal of waste in steel industry, Balatonszèplak, Hungary
11. Olper M (1998) The EZINEX process—five years of development from bench scale to a
commercial plant. In: Dutrizac JE, Gonzalez JA, Bolton GL, Hancock P (eds) Zinc and lead
processing CIM, Calgary, Alberta, Canada, pp 545–560