Manachyn Ivan Oleksandrovych, PhD (Engin.), Senior Researcher, Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107; e-mail:ovoch-isi@outlook. com, manachyn@gmail.com, ORCID 0000-0001-9795-6751
Shevchenko Anatoliy Pylypovych, Dr. Sci. (Engin.), Professor, Leading Researcher, Iron and Steel Institute named after Z.I. Nekrasovof the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107; email: ovoch-isi@outlook.com, ORCID 0000-0003-0867-6825
Petrusha Victoria Petrovna, Lead Engineer, Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107; e-mail: ovoch-isi@outlook.com
Rudenko Alexander Leonidovich, PhD (Engin.), Senior Researcher, Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107; e-mail: ovochisi@outlook. com

Calculative assessment of the quantity of rehabilitators for realization
of the process of interaction of calcium oxide with ceronic sulfur

Abstract. The purpose of the work is to study the amount of reducing
agents required for reactions of the interaction of calcium oxide with sulfur in
the desulphurization of pig iron. The possible reactions of the interaction of
calcium oxide with pig iron are given. Required amounts of reducing agents
([Si], Mg, Al) are calculated for providing interaction of calcium oxide with
sulfur iron. It was shown that the cost of reducing agents is in the range of
0,044 – 1,004 kg / t of pig iron, depending on the change in the input and final
content of sulfur in the pig iron and the type of reducing agent – the participant
in the process of pig iron desulphurisation with calcium oxide. The dependence
of their expenses on the type of recovery and sulfur content is obtained. The
specific costs of reducing agents significantly increase with the increase in the
amount of sequestered sulfur, the dependence is linear. It is shown that
magnesium monoindex is a logical and rational way of its application and does
not require the use of a mixture of magnesium and lime. When using lime
deuxulphurants, the most reasonable use of aluminum, which is also more
technologically and cheap reagent for deoxidizing the melt. The diagrams and
dependences of the cost of [Si], Mg and Al in the reaction of interaction of
calcium oxide with sulfur dioxide on the amount of withdrawn sulfur [S] are
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«Фундаментальные и прикладные проблемы черной металлургии. – 2018. – Вып.32
«Fundamental and applied problems of ferrous metallurgy». – 2018. – Collection 32
«Fundamental’nye i prikladnye problemy černoj metallurgii». – 2018. – Vypusk 32
given. Analysis of the calculated and actual results of off-stage pig iron
desulphurization shows that the parameters of the resulting calculation chart are
an integral part of the technological factors in the substantiation or evaluation
of the process.
Keywords: desulphurization of cast iron, reductant, magnesium,
aluminum, calcium oxide, flow diagrams
Reference
1. Shevchenko A.F. Vnepechnaya desul’furatsiya v kovshakh.
Tekhnologiya. Issledovaniya. Analiz. Sovershenstvovaniye. Shevchenko A.F.,
Manachin I.A., Vergun A.S., Dvoskin B.V., Kislyakov V.G., Shevchenko S.A.,
Ostapenko A.V. Dnepr. Izd.Dnípro VAI2017. S. 253
2. Shevchenko A.F., Bol’shakov V.I., Bashmakov A.M. Tekhnologiya i
oborudovaniye desul’furatsii chuguna magniyem v bol’shegruznykh kovshakh. –
K. Naukova Dumka. 2011. 207 s