Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102942
Title: Analysis of the Possible Ways to Reduce Sulfur Content in Pig Iron
Authors: Myasoedov, S. V.
Filatov, S. V.
Panteleev, V. V.
Listopadov, V. S.
Zagainov, S. A.
Issue Date: 2020
Publisher: Pleiades journals
Citation: Analysis of the Possible Ways to Reduce Sulfur Content in Pig Iron / S. V. Myasoedov, S. V. Filatov, V. V. Panteleev, et al. — DOI 10.3103/S0967091220120104 // Steel in Translation. — 2020. — Vol. 50. — Iss. 12. — P. 823-826.
Abstract: Abstract—: With an approach to improve the strength performance and rate of blast-furnace smelting, especially when pulverized coal fuel is involved, the improvement of the hot coke strength has been considered. A crude oil additive is introduced into the coal charge in PJSC Novolipetsk steel mill (NLMK) to improve the quality of coke. This brings about an increase in coke sulfur resulting in the sulfur content growth in pig iron. Therefore, the task of finding ways to improve pig iron desulfurization in the blast furnace becomes important. The following are key factors that affect the pig iron desulfurization rate: slag basicity, the content of MgO oxide in the slag, the temperature of smelting products, and the slag viscosity. The purpose of this work deals with comparing the desulfurization efficiency through the improvement of the slag basicity and increasing the MgO content. An algorithm is developed based on known equations in order to achieve this goal. The increase of MgO content in the slag provides better input into pig iron desulfurization than the increase in slag basicity. In addition, an increase in MgO content by 1% results in growing slag to pig iron ratio amounting to 3.0 to 3.5 kg/MT. At the same time, an increase in basicity by 0.01 leads to an increase in the slag to pig iron ratio 4 to 5 kg/MT. Consequently, reducing the sulfur content in pig iron by controlling the slag basicity is less heat intensive. Recalculating to the reduced coke consumption rate, the difference in heat demand amounts to 0.4 to 0.5 kg/MT of pig iron. It is shown that the slag viscosity increases to a lesser extent than when caused by a basicity increase when MgO content grows in slag at a temperature of 1450°С. © 2020, Allerton Press, Inc.
Keywords: PIG IRON DESULFURATION
PRODUCTION OF PIG IRON
QUALITY OF COKE
SLAG COMPOSITION
SLAG VISCOSITY
SULFUR CONTENT IN PIG IRON
SULFUR DISTRIBUTION FACTOR
BLAST FURNACES
COAL
COKE
DESULFURIZATION
MAGNESIA
OXIDE MINERALS
PETROLEUM ADDITIVES
PIG IRON
PULVERIZED FUEL
SLAGS
SULFUR
VISCOSITY
BLAST-FURNACE SMELTING
COKE CONSUMPTION
DESULFURIZATION EFFICIENCY
DESULFURIZATION RATE
PULVERIZED COALS
SMELTING PRODUCTS
STRENGTH PERFORMANCE
SULFUR CONTENTS
SMELTING
URI: http://hdl.handle.net/10995/102942
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85104879877
PURE ID: 21862856
8f8abffe-ce7a-406e-96d5-656dec27cca3
ISSN: 9670912
DOI: 10.3103/S0967091220120104
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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