Deposit build-up and corrosion in a copper flash smelting heat recovery boiler

Juho Lehmusto; Daniel Stenlund; Mari Lindgren; Patrik Yrjas

Deposit build-up and corrosion in a copper flash smelting heat recovery boiler

Juho Lehmusto, Daniel Stenlund, Mari Lindgren, Patrik Yrjas

Tutkimustuotos: Artikkeli kirjassa/raportissa/konferenssijulkaisussa › Konferenssiartikkeli › Ammatillinen

Abstrakti

The aim of the work was to improve the understanding of deposit formation and corrosion in a copper flash smelting plant, focusing on the effects of process gas temperature (400 - 900 °C) and heat-transfer surface temperature (160 - 320 °C) on the deposit formation and corrosion rate. The rate of build-up increased as a function of process gas temperature, which can be explained by a larger extent of sintering at higher temperatures, resulting in slagging and thus, in better adhesion of particles hitting the surface. The corrosion rates increased as a function of process gas temperature. Iron sulphate (FeSO₄ or Fe₂(SO₄)₃) was found at the interface between the deposits and the corroded metal surface, suggesting that corrosion was induced most likely by sulphuric acid (H₂SO₄) from the reaction between SO₃ (originating from SO₂ in the process gas) and water vapor.

Alkuperäiskieli	Ei tiedossa
Otsikko	HTCPM 2016 - 9th International Symposium on High-Temperature Corrosion and Protection of Materials
Toimittajat	B. Pint, D. Monceau, M. Vilasi, Y. Wouters, S. Chevalier, C. Desgranges
Sivut	234–235
Tila	Julkaistu - 2016
OKM-julkaisutyyppi	D3 Ammatillisen konferenssin julkaisusarja

Keywords

corrosion
deposit build-up rate
flash smelting process
heat recovery boiler

Viittausmuodot

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title = "Deposit build-up and corrosion in a copper flash smelting heat recovery boiler",

abstract = "The aim of the work was to improve the understanding of deposit formation and corrosion in a copper flash smelting plant, focusing on the effects of process gas temperature (400 - 900 °C) and heat-transfer surface temperature (160 - 320 °C) on the deposit formation and corrosion rate. The rate of build-up increased as a function of process gas temperature, which can be explained by a larger extent of sintering at higher temperatures, resulting in slagging and thus, in better adhesion of particles hitting the surface. The corrosion rates increased as a function of process gas temperature. Iron sulphate (FeSO4 or Fe2(SO4)3) was found at the interface between the deposits and the corroded metal surface, suggesting that corrosion was induced most likely by sulphuric acid (H2SO4) from the reaction between SO3 (originating from SO2 in the process gas) and water vapor.",

keywords = "corrosion, deposit build-up rate, flash smelting process, heat recovery boiler, corrosion, deposit build-up rate, flash smelting process, heat recovery boiler, corrosion, deposit build-up rate, flash smelting process, heat recovery boiler",

author = "Juho Lehmusto and Daniel Stenlund and Mari Lindgren and Patrik Yrjas",

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year = "2016",

language = "Odefinierat/ok{\"a}nt",

pages = "234–235",

editor = "B. Pint and D. Monceau and M. Vilasi and Y. Wouters and S. Chevalier and C. Desgranges",

booktitle = "HTCPM 2016 - 9th International Symposium on High-Temperature Corrosion and Protection of Materials",

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Deposit build-up and corrosion in a copper flash smelting heat recovery boiler. / Lehmusto, Juho; Stenlund, Daniel; Lindgren, Mari et al.
HTCPM 2016 - 9th International Symposium on High-Temperature Corrosion and Protection of Materials. toim. / B. Pint; D. Monceau; M. Vilasi; Y. Wouters; S. Chevalier; C. Desgranges. 2016. s. 234–235.

Tutkimustuotos: Artikkeli kirjassa/raportissa/konferenssijulkaisussa › Konferenssiartikkeli › Ammatillinen

TY - GEN

T1 - Deposit build-up and corrosion in a copper flash smelting heat recovery boiler

AU - Lehmusto, Juho

AU - Stenlund, Daniel

AU - Lindgren, Mari

AU - Yrjas, Patrik

N1 - ook

PY - 2016

Y1 - 2016

N2 - The aim of the work was to improve the understanding of deposit formation and corrosion in a copper flash smelting plant, focusing on the effects of process gas temperature (400 - 900 °C) and heat-transfer surface temperature (160 - 320 °C) on the deposit formation and corrosion rate. The rate of build-up increased as a function of process gas temperature, which can be explained by a larger extent of sintering at higher temperatures, resulting in slagging and thus, in better adhesion of particles hitting the surface. The corrosion rates increased as a function of process gas temperature. Iron sulphate (FeSO4 or Fe2(SO4)3) was found at the interface between the deposits and the corroded metal surface, suggesting that corrosion was induced most likely by sulphuric acid (H2SO4) from the reaction between SO3 (originating from SO2 in the process gas) and water vapor.

AB - The aim of the work was to improve the understanding of deposit formation and corrosion in a copper flash smelting plant, focusing on the effects of process gas temperature (400 - 900 °C) and heat-transfer surface temperature (160 - 320 °C) on the deposit formation and corrosion rate. The rate of build-up increased as a function of process gas temperature, which can be explained by a larger extent of sintering at higher temperatures, resulting in slagging and thus, in better adhesion of particles hitting the surface. The corrosion rates increased as a function of process gas temperature. Iron sulphate (FeSO4 or Fe2(SO4)3) was found at the interface between the deposits and the corroded metal surface, suggesting that corrosion was induced most likely by sulphuric acid (H2SO4) from the reaction between SO3 (originating from SO2 in the process gas) and water vapor.

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KW - deposit build-up rate

KW - flash smelting process

KW - heat recovery boiler

KW - corrosion

KW - deposit build-up rate

KW - flash smelting process

KW - heat recovery boiler

KW - corrosion

KW - deposit build-up rate

KW - flash smelting process

KW - heat recovery boiler

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BT - HTCPM 2016 - 9th International Symposium on High-Temperature Corrosion and Protection of Materials

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