Detailed Information

Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

Sulfide Capacity of the CaO-SiO2-MnO Slag at 1 873 K

Authors
Park, Geun-HoKang, Youn-BaePark, Joo Hyun
Issue Date
2011
Publisher
Nippon Tekko Kyokai/Iron and Steel Institute of Japan
Keywords
sulfide capacity; CaO-SiO2-MnO slag; basicity; activity; activity coefficient; optical basicity
Citation
ISIJ International, v.51, no.9, pp.1375 - 1382
Indexed
SCIE
SCOPUS
Journal Title
ISIJ International
Volume
51
Number
9
Start Page
1375
End Page
1382
URI
https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/39200
DOI
10.2355/isijinternational.51.1375
ISSN
0915-1559
Abstract
The sulfide capacity of the CaO-SiO2-MnO slag through the entire composition range was measured at 1 873 K using a gas-slag equilibration method and the effect of basicity and the activity coefficient of sulfide on the sulfide capacity of molten slag was investigated. Furthermore, the relationship between the sulfide capacity and the optical basicity of MnO containing slags was evaluated in view of industrial applications. Sulfide capacity of the slag linearly increased by increasing the content of MnO not only at a given silica content but also at a fixed Vee ratio (=CaO/SiO2). The capacity and the modified Vee ratio (=(CaO+MnO)/SiO2) showed a good linear relationship. Assuming that the basicity and the stability of sulfide ion in the slag are proportional to the activity of MnO (a(MnO)) and the activity coefficient of MnS (gamma(MnS)), respectively, the composition dependency of sulfide capacity was well described by the changes in the ratio of a(MnO) to gamma(MnS). The iso-sulfide capacity of the CaO-SiO2-MnO slag at 1 873 K was constructed in the present study. The capacity contours seemed to rotate clock wisely from the CaO-SiO2 binary side to the MnO-corner. The sulfide capacity increased with increasing ratio of MnO to CaO at relatively acidic region in which silica content greater than about 40 mass%, while the substitution of CaO by MnO does not significantly affect the capacity in the low silica region. The sulfide capacity generally increased with increasing content of MnO regardless of changes in the content of other constituents in multicomponent MnO-containing slags. It is necessary to take different values for the theoretical optical basicity of MnO in order to estimate the sulfide capacity of MnO-containing slags depending on the content of silica.
Files in This Item
Go to Link
Appears in
Collections
COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING > 1. Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher Park, Joo Hyun photo

Park, Joo Hyun
ERICA 공학대학 (DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING)
Read more

Altmetrics

Total Views & Downloads

BROWSE