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Magnitogorsk, Russia

Spirin N.A.,Ural Federal University | Lavrov V.V.,Ural Federal University | Kosachenko I.E.,Magnitogorsk Metallurgical Combine | Onorin O.P.,Ural Institute of Metals | And 3 more authors.
Metallurgist | Year: 2015

A description is presented of an information-modeling system developed to help optimize the composition of the charge materials and fluxes in sintering and blast-furnace smelting. The system is based on models that provide for end-to-end accounting of the sintering-machine and blast-furnace charges, calculate the technical-economic indices of blast-furnace smelting (coke rate, productivity) when there are changes in the blast parameters, the properties of the coke, and the composition of the iron-ore-bearing part of the charge, calculate the properties of the primary and secondary slags and the desulfurizing ability of the final slag, predict the sulfur content of the pig iron; model the gasdynamic regime during smelting, and diagnose the course of the smelting operation. The software that has been developed is designed to automate the work station of production personnel in the blast-furnace shop at the Magnitogorsk Metallurgical Combine. © 2015 Springer Science+Business Media New York Source

Karandaev A.S.,Magnitogorsk State Technical University | Evdokimov S.A.,Magnitogorsk State Technical University | Khramshin V.R.,Magnitogorsk State Technical University | Sarlybaev A.A.,Magnitogorsk Metallurgical Combine
Metallurgist | Year: 2015

A description is given of the TDMS diagnostic system that has been introduced on the FTOHBR-150200/35 transformers of 180-ton arc steelmaking furnaces at the Magnitogorsk Metallurgical Combine. The complete circuit diagram of the system is also presented. The modular principle of construction of the system is validated and the functions of the modules of primary transducers are examined. The article presents the characteristics of the Minitrans diagnostic complex for monitoring the gas and moisture contents of transformer oil and the TAP-Monitor instrument for monitoring and diagnosing the technical condition of load-voltage regulators. It also includes diagrams of the changes in the recorded parameters over time and shows the on-screen formats of the integral diagnostic characteristics. The technical-economic expediency of introducing the TDMS system is demonstrated. © 2015 Springer Science+Business Media New York Source

Logunova O.S.,Magnitogorsk State Technical University | Pavlov V.V.,Magnitogorsk Metallurgical Combine
Metallurgist | Year: 2014

Results are presented from the use of alternative charge materials to make steel in an AC EAF. The authors formulate and solve an optimization problem aimed at minimizing the cost of the charge materials and limiting the steel's residual contents of such elements as chromium, nickel, and copper. Specific results are presented from studies of steel 08Yu made in accordance with the standard GOST 9045, cord, wire rod, and a grade of steel governed by the standard GOST 380. © 2014 Springer Science+Business Media New York. Source

Salganik V.M.,Magnitogorsk State Technical University | Chikishev D.N.,Magnitogorsk State Technical University | Pozhidaeva E.B.,Magnitogorsk State Technical University | Nabatchikov D.G.,Magnitogorsk Metallurgical Combine
Metallurgist | Year: 2016

Actual temperatures of structural and phase transformations Ar3 and Ar1 for different chemical compositions of low-alloy pipe steels are determined on the basis of dilatometric studies. Equations are obtained for calculating the temperature of critical points Ar3 and Ar1 taking account of the effect of 14 main chemical elements as a result of processing experimental data. It is shown that Ar3 and Ar1 temperatures calculated by well-known equations differ (by 10–80°C) considerably from actual temperatures, whereas the relationships proposed increase the precision of critical temperature calculation for low-alloy steels by 10°C at least. © 2016 Springer Science+Business Media New York Source

Rybolovlev V.Y.,Magnitogorsk Metallurgical Combine | Krasnobaev A.V.,Magnitogorsk Metallurgical Combine | Spirin N.A.,Ural Federal University | Lavrov V.V.,Ural Federal University
Metallurgist | Year: 2015

The principles of construction and the architecture of an automated system for controlling blast-furnace smelting are examined. A block diagram of a hardware-software complex developed for a blast furnace is presented along with scheme for integrating the furnace control system into the corporate control system at the factory. The system that has been developed creates a single informational-technological and control space that is closely linked to other information systems at the factory – especially the systems of the subdivisions whose performance has the greatest impact on the quality of the pig iron: the shop that prepares the sintering-machine charges, the sinter shop, the coke and coal chemicals plant, the BOF shop, the rail transport facility, the oxygen-plant/compressor station, and others. The main functional capabilities of the software are realized in the form of a model system that supports decision-making. This system is based on a group of mathematical models that solve various problems related to blast-furnace smelting. Users of the system can obtain missing information which is needed to make a decision by engaging in a dialog with the mathematical model. The results that have been obtained from using the informational-modeling system have improved response time and performance in the analysis, prediction, and planning of production situations, which in turn has improved decision-making by engineers and technicians when there are fluctuations in the composition and quality of the iron-ore-bearing materials being smelted in the furnaces and changes in the market conditions. © 2015, Springer Science+Business Media New York. Source

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