Carbothermal recovery of zinc from brass ash

Ö Kahvecioǧlu; B. Derin; O. Yücel

doi:10.1179/037195503225002790

Carbothermal recovery of zinc from brass ash

Ö Kahvecioǧlu^*, B. Derin, O. Yücel

^*Corresponding author for this work

Department of Metallurgical and Materials Engineering

Istanbul Technical University

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

18 Citations (Scopus)

Abstract

Brass ash of composition (wt-%) 59-67Zn-9-22Cu-1.45Pb-2-61SiO ₂-0-36Cl was treated by carbothermal reduction in a temperature controlled tube furnace. The aim of the work was to collect zinc in the form of metal and/or zinc oxide in the gaseous phase. Treatment temperature (950-1200°C) and time (15-180 min) were varied. At 1200°C and 60 min, recovery of zinc was 92.5% and zinc content in the remaining residue was found to be 12.8 wt-%. Kinetic analysis of the experimental results showed that initially the reaction was under chemical control with an activation energy of 90.1 kJ mol^-1. Subsequently the development of a sintering structure caused the reaction mechanism to change to diffusion control.

Original language	English
Pages (from-to)	95-101
Number of pages	7
Journal	Transactions of the Institutions of Mining and Metallurgy, Section C: Mineral Processing and Extractive Metallurgy
Volume	112
Issue number	2 AUGUST
DOIs	https://doi.org/10.1179/037195503225002790
Publication status	Published - Aug 2003

Keywords

Brass ash
Carbothermal reduction
Pyrometallurgy
Zinc recovery

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10.1179/037195503225002790

Cite this

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title = "Carbothermal recovery of zinc from brass ash",

abstract = "Brass ash of composition (wt-\%) 59-67Zn-9-22Cu-1.45Pb-2-61SiO 2-0-36Cl was treated by carbothermal reduction in a temperature controlled tube furnace. The aim of the work was to collect zinc in the form of metal and/or zinc oxide in the gaseous phase. Treatment temperature (950-1200°C) and time (15-180 min) were varied. At 1200°C and 60 min, recovery of zinc was 92.5\% and zinc content in the remaining residue was found to be 12.8 wt-\%. Kinetic analysis of the experimental results showed that initially the reaction was under chemical control with an activation energy of 90.1 kJ mol-1. Subsequently the development of a sintering structure caused the reaction mechanism to change to diffusion control.",

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author = "{\"O} Kahvecioǧlu and B. Derin and O. Y{\"u}cel",

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language = "English",

volume = "112",

pages = "95--101",

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TY - JOUR

T1 - Carbothermal recovery of zinc from brass ash

AU - Kahvecioǧlu, Ö

AU - Derin, B.

AU - Yücel, O.

PY - 2003/8

Y1 - 2003/8

N2 - Brass ash of composition (wt-%) 59-67Zn-9-22Cu-1.45Pb-2-61SiO 2-0-36Cl was treated by carbothermal reduction in a temperature controlled tube furnace. The aim of the work was to collect zinc in the form of metal and/or zinc oxide in the gaseous phase. Treatment temperature (950-1200°C) and time (15-180 min) were varied. At 1200°C and 60 min, recovery of zinc was 92.5% and zinc content in the remaining residue was found to be 12.8 wt-%. Kinetic analysis of the experimental results showed that initially the reaction was under chemical control with an activation energy of 90.1 kJ mol-1. Subsequently the development of a sintering structure caused the reaction mechanism to change to diffusion control.

AB - Brass ash of composition (wt-%) 59-67Zn-9-22Cu-1.45Pb-2-61SiO 2-0-36Cl was treated by carbothermal reduction in a temperature controlled tube furnace. The aim of the work was to collect zinc in the form of metal and/or zinc oxide in the gaseous phase. Treatment temperature (950-1200°C) and time (15-180 min) were varied. At 1200°C and 60 min, recovery of zinc was 92.5% and zinc content in the remaining residue was found to be 12.8 wt-%. Kinetic analysis of the experimental results showed that initially the reaction was under chemical control with an activation energy of 90.1 kJ mol-1. Subsequently the development of a sintering structure caused the reaction mechanism to change to diffusion control.

KW - Brass ash

KW - Carbothermal reduction

KW - Pyrometallurgy

KW - Zinc recovery

UR - https://www.scopus.com/pages/publications/0346148312

U2 - 10.1179/037195503225002790

DO - 10.1179/037195503225002790

M3 - Article

AN - SCOPUS:0346148312

SN - 0371-9553

VL - 112

SP - 95

EP - 101

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

IS - 2 AUGUST

ER -

Carbothermal recovery of zinc from brass ash

Abstract

Keywords

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