Novolipetsk Metallurgical Combine NLMK

Lipetsk, Russia

Novolipetsk Metallurgical Combine NLMK

Lipetsk, Russia
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Isaenko G.E.,Novolipetsk Metallurgical Combine NLMK | Khaidukov V.P.,Lipetsk State Technical University
Metallurgist | Year: 2012

This articles examines methods of evaluating the degree of granulation of sintering-machine charges of various compositions. The literature contains 14 different criteria for making such an evaluation. The indices that have been proposed are analyzed and are shown to depend on the operating regime of cylindrical balling drums. It is established that the upper and lower coarseness limits for the charge and the length of time that granules close to the upper limit are heated need to be taken into account when choosing a method for evaluating degree of granulation. © 2012 Springer Science+Business Media, Inc.


Frolov Y.A.,Uralelektra Scientific Production Enterprise | Mansurova N.R.,Novolipetsk Metallurgical Combine NLMK | Semenov O.A.,Novolipetsk Metallurgical Combine NLMK
Metallurgist | Year: 2015

The Novolipetsk Metallurgical Combine has been collaborating with leading scientific research institutes and scientists on the process of sintering since the 1980s. This article presents an analytical survey of a number of scientific research projects that have made it possible to improve this process and further develop the theory of sintering. © 2015 Springer Science+Business Media New York


Pimenov V.A.,Novolipetsk Metallurgical Combine NLMK | Pertseva V.S.,Novolipetsk Metallurgical Combine NLMK
Metallurgist | Year: 2015

A method has been developed and introduced for determining the characteristics of local thickenings in the cross section of rolled products. The method is based on the mathematical methods of band-pass filtering and the analysis of extremes. The method provides an objective, automatic real-time evaluation of the extent to which the cross section satisfies prescribed criteria. It gives hot-rolling mill operators information for taking corrective actions, gives inspection services data for product certification, and gives technical services results that can be used to analyze and improve the technology. © 2015 Springer Science+Business Media New York


Kurunov I.F.,Novolipetsk Metallurgical Combine NLMK
Metallurgist | Year: 2012

Global steel production is based on the refining of liquid pig iron in basic oxygen converters. No technologies that do not use liquid pig iron are expected to replace this method in the coming decades, and ore and coal will remain the main raw materials used to make pig iron. Existing technologies that produce liquid pig iron outside the blast furnace are considerably inferior to blast-furnace smelting with respect to productivity and integral total fuel consumption, which includes the fuel costs incurred to produce coke, agglomerated ore-bearing materials, hot blast air, and oxygen. The blast-furnace process is also the leading technology in terms of the scale of production and has the lowest production costs. Not only will the blast furnace retain its lead for the foreseeable future, but there may also be significant reductions in its energy costs and environmental impacts. These improvements might come about as a result of the use of "self-reducing" ore-carbon briquettes made from concentrate and inexpensive carbon-bearing materials. It might also be possible to further intensify the smelting operation through the use of oxygen and increases in top-gas pressure. © 2012 Springer Science+Business Media, Inc.


Filatov S.,Novolipetsk Metallurgical Combine NLMK
Metallurgist | Year: 2015

On November 7th, it will be 80 years since the first ton of pig iron was tapped at the Novolipetsk Metallurgical Combine. Over its eight decades, the combine has gone from being the site of the only blast furnace in Russia to Russia’s largest producer of high-added-value steel and metal rolled products – it accounts for 21% of all steel made in Russia. © 2015 Springer Science+Business Media New York


Belousov V.A.,Novolipetsk Metallurgical Combine NLMK | Ivanenko A.A.,Novolipetsk Metallurgical Combine NLMK
Metallurgist | Year: 2015

The main aim with which zinc and polymer coatings are applied to rolled product is improved corrosion and atmosphere resistance. An increase in coating resistance requires a high level of technology development and use of high quality materials. Data for different forms of coating, including those produced by the Novolipetsk Metallurgical Combine, and comparative evaluation of their resistance are provided. © 2015 Springer Science+Business Media New York


Tyulenev E.N.,Novolipetsk Metallurgical Combine NLMK | Dolgikh Y.N.,Novolipetsk Metallurgical Combine NLMK
Metallurgist | Year: 2015

A technology is described for producing especially low-carbon steel using a ladle furnace unit. © 2015 Springer Science+Business Media New York


Shchurova O.P.,Novolipetsk Metallurgical Combine NLMK | Revkova E.A.,Novolipetsk Metallurgical Combine NLMK
Metallurgist | Year: 2015

The Novolipetsk Metallurgical Combine (NLMK) is today one of the large ferrous metallurgy concerns in Russia and is among the leading companies that make up the nation's gross national product. The ironmaking industry of the region, rich in iron ores, traces its roots back more than 2000 years ago. The first factories in the area were built under the rule of Peter I (Peter the Great), at the end of the XVII century and the beginning of the XVIII century. A new stage in the development of the region's metallurgy began with the construction of the Sokolskii Metallurgical Combine at the end of the XIX Century and the beginning of the XX Century. The production of electrical steels advanced further at the NLMK in the 1980s. A shop to make alloyed cold-rolled dynamo steel with an electrically insulating coating was built in 1986, this facility at the time being the largest shop of its kind in Europe. The NLMZ has built four sintering machines since the beginning of the 1960s. The introduction of the nation's most powerful sintering machine in 1964 allowed the blast-furnace shop to switch from ore to fluxed sinter. The NLMZ became a plant with a complete metallurgical cycle by the end of the 1970s. In light of the complex structure of the facility?s product mix and the combination nature of its production operations, into 1983 the plant was reorganized into the Novolipetsk Metallurgical Combine.


Kurunov I.F.,Novolipetsk Metallurgical Combine NLMK | Filatov S.V.,Novolipetsk Metallurgical Combine NLMK
Metallurgist | Year: 2014

The productivity of a blast furnace is determined by the gas permeability of the stock and the amount of gas formed for each ton of pig iron that is made, i.e., it is determined by the amount of fuel consumed and the oxygen content of the blast. The indices used to characterize the unit productivity of blast furnaces and the smelting rate inside them per square meter of their volume formally depend on the height of the furnace. It is incorrect to use these indices to compare the performance of furnaces which are of different volumes. Use of the indices by the authors of [3] to compare smelting rates on blast furnaces in the 1940–1950s and modern furnaces led them to conclude that smelting rate is not increased by increasing the furnace’s topgas pressure and enriching the air blast with oxygen. In order to objectively compare the efficiency of blast furnaces that differ in volume, it is necessary to use unit-productivity and smelting-rate indices that are calculated for each square meter of the cross section of the hearth. The methods currently used to operate blast furnaces at the Nizhniy Tagil Metallurgical Combine and Novolipetsk Metallurgical Combine show that as long as the coke and iron-ore-bearing charge materials which are used are of acceptable quality, raising the top-gas pressure and the increasing the oxygen content of the blast make it possible to achieve record values for blast furnaces’ productivity and smelting-rate indices. © 2014, Springer Science+Business Media New York.


The Fifth International Congress on the Theory and Technology of Blast-Furnace Smelting, held at Shanghai, China, in October 2008, focused on blast-furnace smelting in China, Japan, North America, Western Europe, and Russia. The first high-capacity blast furnace in China was BF-1 that was erected at a new metallurgical plant of Baosteel. The blast-furnace charge used at the Baosteel plant consists of sinter, pellets, and ore. The blast-furnace shop at Taigang Stainless Steel Co., (TISCO) operated three blast furnaces with volumes of 1800, 1650, and 4350 m3. Japanese blast furnaces recorded the lowest fuel consumption due to the use of high-quality iron-ore agglomerates, coke, and a high blast temperature and optimization of the smelting technology. There were 36 existing blast furnaces that were operating in North America, while the number of integrated metallurgical plants in Western Europe decreased to 26 from 45 and the number of blast furnaces decreased to 58 from 92 between 1990-2008.

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