Reduction in oxidation loss of alloying elements in rail steel production

Metallurgist ◽  
1983 ◽  
Vol 27 (10) ◽  
pp. 331-332
Author(s):  
V. A. Palyanichka ◽  
I. G. Volkov ◽  
M. S. Gordienko ◽  
A. I. Tkachenko ◽  
V. D. Roztorguev
Keyword(s):  
Rail Steel ◽  
Steel Production ◽  
Alloying Elements ◽  
Oxidation Loss

Improving rail-steel production

2013 ◽  
Vol 43 (2) ◽  
pp. 69-72 ◽  
Author(s):  
I. V. Aleksandrov ◽  
E. P. Kuznetsov ◽  
D. V. Boikov ◽  
V. V. Mogil’nyi ◽  
T. P. Zakharova
Keyword(s):  
Rail Steel ◽  
Steel Production

Review of Russian Practice Reveals Rail Steel Production Methods

JOM ◽  
1953 ◽  
Vol 5 (12) ◽  
pp. 1627-1628
Author(s):  
Carl A. Zapffe
Keyword(s):  
Rail Steel ◽  
Steel Production ◽  
Production Methods

Estimation of the Emissions of CO2, SOx, and NOx of Steel Alloys

1998 ◽  
Vol 13 (9) ◽  
pp. 2514-2525 ◽  
Author(s):  
K. Halada ◽  
K. Ijima ◽  
K. Yagi
Keyword(s):  
Steel Production ◽  
Environmental Issue ◽  
Integrated System ◽  
Alloying Elements ◽  
Steel Alloys ◽  
Finished Steel ◽  
Production Stage ◽  
Steel Making ◽  
Effect Of The Composition ◽  
Product Effect

The emissions of CO2, SOx, and NOx of various steel alloys in the production stage were calculated by using the unit requirement of each subsystem of the steel-making process, in order to compare the superiority from the viewpoint of the environmental issue among various types of steel alloys. As steel production is a typical integrated system with multiproducts, allocation of emissions to each product, effect of the composition, and sharing the load by the by-product gases are considered. Calculated values of emission were arranged for fifteen kinds of finished steel products and for arbitrary contents of alloying elements.

Changing the Technical-Economic Indices of Rail-Steel Production by Sorting Scrap Based on its Content of Residual Elements

Metallurgist ◽  
2014 ◽  
Vol 58 (5-6) ◽  
pp. 500-503
Author(s):  
P. A. Shabanov ◽  
K. V. Volkov ◽  
E. P. Kuznetsov ◽  
I. V. Aleksandrov ◽  
A. Yu. Batalov
Keyword(s):  
Rail Steel ◽  
Steel Production ◽  
Residual Elements ◽  
Economic Indices

Formation of carbonitrides and precipitation of alloying elements during thermomechanical treatment of high-strength low-alloy steels. Atomistic modeling

2021 ◽  
Vol 77 (9) ◽  
pp. 1024-1032
Author(s):  
P. V. Shilyaev ◽  
P. A. Stekanov ◽  
V. L. Kornilov ◽  
F. V. Kaptsan ◽  
V. N. Urtsev ◽  
...  
Keyword(s):  
Thermomechanical Treatment ◽  
Density Functional ◽  
Steel Production ◽  
High Strength ◽  
Enthalpy Of Mixing ◽  
Paramagnetic State ◽  
Alloying Elements ◽  
Low Alloy Steels ◽  
Atomistic Modeling ◽  
Mixed Composition

Understanding the processes that control the formation of precipitates of alloying element, their composition and morphology is important for the choosing of optimal regimes of thermomechanical treatment, providing the required structural state and properties of low-alloyed steels. The use of modern methods of atomistic modeling and ab initio calculations to study the mechanisms and conditions of precipitation depending on the steel composition and temperature is discussed. The enthalpy of formation of Ti, V, Nb carbides and nitrides in γ-Fe was calculated using the methods of the theory of the electron density functional and the temperatures of their dissolution were determined in dependence on the composition of the steel. The results obtained agree with the experimental data and obtained by the CALPHAD method. Calculations of the electronic structure, enthalpy of mixing, energy of effective interactions between atoms of alloying and impurity elements have been performed. It was shown that an essential factor determining the nature of the interaction between alloying elements was the magnetic state of iron. It has been established that the enthalpy of mixing, which expresses the tendency of the system to decomposition, increases with the transition of α-Fe from the ferromagnetic to the paramagnetic state. In ferromagnetic α-Fe energetically, the formation of precipitates of Cu, as well as particles of a mixed composition of Cu‒Al, Cu‒Ni and an ordered phase of NiAl are preferable. It has been shown that precipitates Cu-based can be formed during technological times. The transition of α-Fe to the paramagnetic state results in increase of interactions between alloying elements (the exception is the interaction of Cu‒Cu and Cu‒Ni). As a result, additional combinations of alloying elements appear, the interaction between which lead to the formation of precipitates. At the same time, in γ-Fe, precipitates can be formed only based on Mo and Nb. The role of magnetism in the formation of precipitates and their influence on the γ→α-transformation is discussed. It has been shown that the results obtained make a base for enhancement technologies of high-strength low-alloyed steel production.

Drying and heating of scrap metal at steelmaking: industrial safety, economics, ecology

2020 ◽  
Vol 76 (12) ◽  
pp. 1353-1258
Author(s):  
V. A. Spirin ◽  
V. E. Nikol’skii ◽  
D. V. Vokhmintsev ◽  
A. A. Moiseev ◽  
P. G. Smirnov ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
High Efficiency ◽  
Steel Production ◽  
Scrap Metal ◽  
Industrial Safety ◽  
Technical Solution ◽  
Metal Charge ◽  
Basic Task ◽  
Scrap Heating ◽  
Winter Time

At steel production based on scrap metal utilization, the scrap heating before charging into a melting facility is an important way of energy efficiency increase and ecological parameters improving. In winter time scrap metal charging with ice inclusions into a metal melt can result in a considerable damage of equipment and even accidents. Therefore, scrap preliminary drying is necessary to provide industrial safety. It was shown, that in countries with warm and low-snow climate with no risk of scrap metal icing up during its transportation and storing in the open air, the basic task being solved at the scrap drying is an increase of energy efficiency of steelmaking. InRussiathe scrap metal drying first of all provides the safety of the process and next - energy saving. Existing technologies of scrap metal drying and heating considered, as well as advantages and drawbacks of technical solutions used at Russian steel plants. In winter time during scrap metal heating at conveyers (Consteel process) hot gases penetrate not effectively into its mass, the heat is not enough for evaporation of wetness in the metal charge. At scrap heating by the furnace gases, a problem of dioxines emissions elimination arises. Application of shaft heaters results in high efficiency of scrap heating. However, under conditions of Russian winter the upper scrap layers are not always heated higher 0 °С and after getting into a furnace bath the upper scrap layers cause periodical vapor explosions. The shaft heaters create optimal conditions for dioxines formation, which emit into atmosphere. It was shown, that accounting Russian economic and nature conditions, the metal charge drying and heating in modified charging buckets by the heat of burnt natural gas or other additional fuel is optimal. The proposed technical solution enables to burnt off organic impurities ecologically safely, to melt down ice, to evaporate the wetness in the scrap as well as to heat the charge as enough as the charging logistics enables it. The method was implemented at several Russian steel plants. Technical and economical indices of scrap metal drying in buckets under conditions of EAF-based shop, containing two furnaces ДСП-100, presented.

Artificial Intelligence Services in Steel Production — On Premises and in the Cloud

2020 ◽  
Author(s):  
G. Hohenbichler ◽  
J. Reidetschlaeger ◽  
M. Sattler ◽  
P. Krahwinkler ◽  
S. Strasser
Keyword(s):  
Artificial Intelligence ◽  
Steel Production ◽  
Intelligence Services
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