Beneficiation of brass ashes

S. Timur; S. Gürmen; G. Orhan; C. Arslan; I. Duman

doi:10.1016/S0167-4528(00)80095-2

Beneficiation of brass ashes

S. Timur^*, S. Gürmen, G. Orhan, C. Arslan, I. Duman

^*Corresponding author for this work

Department of Metallurgical and Materials Engineering

Istanbul Technical University

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

11 Citations (Scopus)

Abstract

Slags formed during brass smelting contain a significant amount of metallic value. The glassy and oxidized portion of the ground slag, usually referred to as "brass ash", consists of compounds such as ZnO, ZnO·SiO₂, Cu-Zn, CuO, Cu and Zn/Cu/B oxide, and its colored-metal content may vary between 28÷52% Zn and 8÷16% Cu. These ashes are classified as harmful wastes, due to their high Zn content, and are considered to be secondary raw materials that should be treated accordingly, from an economical viewpoint. The aim of this experimental study is to investigate the possibilities of beneficiating brass ashes by treating it with H₂SO₄ or (NH₄)₂CO₃+ NH₄OH mixtures. Effects of temperature, air sparging and addition of oxidizing agents, such as MnO₂ and Fe₂(SO₄)₃, are investigated on copper and zinc leaching recovery. As a result of both acidic and alkaline leaching experiments, it is observed that more than 90% of Zn and more than 65% of Cu was leached out. Two separate process flow sheets are proposed for the possible treatment of brass ashes.

Original language	English
Pages (from-to)	C12a-27-C12a-33
Journal	Developments in Mineral Processing
Volume	13
Issue number	C
DOIs	https://doi.org/10.1016/S0167-4528(00)80095-2
Publication status	Published - 2000

Keywords

amines
brass ash
copper recovery
fertilizer
leaching
zinc recovery

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10.1016/S0167-4528(00)80095-2

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title = "Beneficiation of brass ashes",

abstract = "Slags formed during brass smelting contain a significant amount of metallic value. The glassy and oxidized portion of the ground slag, usually referred to as {"}brass ash{"}, consists of compounds such as ZnO, ZnO·SiO2, Cu-Zn, CuO, Cu and Zn/Cu/B oxide, and its colored-metal content may vary between 28÷52% Zn and 8÷16% Cu. These ashes are classified as harmful wastes, due to their high Zn content, and are considered to be secondary raw materials that should be treated accordingly, from an economical viewpoint. The aim of this experimental study is to investigate the possibilities of beneficiating brass ashes by treating it with H2SO4 or (NH4)2CO3+ NH4OH mixtures. Effects of temperature, air sparging and addition of oxidizing agents, such as MnO2 and Fe2(SO4)3, are investigated on copper and zinc leaching recovery. As a result of both acidic and alkaline leaching experiments, it is observed that more than 90% of Zn and more than 65% of Cu was leached out. Two separate process flow sheets are proposed for the possible treatment of brass ashes.",

keywords = "amines, brass ash, copper recovery, fertilizer, leaching, zinc recovery",

author = "S. Timur and S. G{\"u}rmen and G. Orhan and C. Arslan and I. Duman",

year = "2000",

doi = "10.1016/S0167-4528(00)80095-2",

language = "English",

volume = "13",

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TY - JOUR

T1 - Beneficiation of brass ashes

AU - Timur, S.

AU - Gürmen, S.

AU - Orhan, G.

AU - Arslan, C.

AU - Duman, I.

PY - 2000

Y1 - 2000

N2 - Slags formed during brass smelting contain a significant amount of metallic value. The glassy and oxidized portion of the ground slag, usually referred to as "brass ash", consists of compounds such as ZnO, ZnO·SiO2, Cu-Zn, CuO, Cu and Zn/Cu/B oxide, and its colored-metal content may vary between 28÷52% Zn and 8÷16% Cu. These ashes are classified as harmful wastes, due to their high Zn content, and are considered to be secondary raw materials that should be treated accordingly, from an economical viewpoint. The aim of this experimental study is to investigate the possibilities of beneficiating brass ashes by treating it with H2SO4 or (NH4)2CO3+ NH4OH mixtures. Effects of temperature, air sparging and addition of oxidizing agents, such as MnO2 and Fe2(SO4)3, are investigated on copper and zinc leaching recovery. As a result of both acidic and alkaline leaching experiments, it is observed that more than 90% of Zn and more than 65% of Cu was leached out. Two separate process flow sheets are proposed for the possible treatment of brass ashes.

AB - Slags formed during brass smelting contain a significant amount of metallic value. The glassy and oxidized portion of the ground slag, usually referred to as "brass ash", consists of compounds such as ZnO, ZnO·SiO2, Cu-Zn, CuO, Cu and Zn/Cu/B oxide, and its colored-metal content may vary between 28÷52% Zn and 8÷16% Cu. These ashes are classified as harmful wastes, due to their high Zn content, and are considered to be secondary raw materials that should be treated accordingly, from an economical viewpoint. The aim of this experimental study is to investigate the possibilities of beneficiating brass ashes by treating it with H2SO4 or (NH4)2CO3+ NH4OH mixtures. Effects of temperature, air sparging and addition of oxidizing agents, such as MnO2 and Fe2(SO4)3, are investigated on copper and zinc leaching recovery. As a result of both acidic and alkaline leaching experiments, it is observed that more than 90% of Zn and more than 65% of Cu was leached out. Two separate process flow sheets are proposed for the possible treatment of brass ashes.

KW - amines

KW - brass ash

KW - copper recovery

KW - fertilizer

KW - leaching

KW - zinc recovery

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U2 - 10.1016/S0167-4528(00)80095-2

DO - 10.1016/S0167-4528(00)80095-2

M3 - Article

AN - SCOPUS:77957053891

SN - 0167-4528

VL - 13

SP - C12a-27-C12a-33

JO - Developments in Mineral Processing

JF - Developments in Mineral Processing

IS - C

ER -

Beneficiation of brass ashes

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Keywords

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