Technology of magnesia slags forming provides increase of electric energy utilization efficiency and furnace lining resistance due to early formation of stable slag foam and decrease of aggressive slag impact on the lining. At the same time the practice of operation with magnesia slags shows, that excessive over-saturation them by magnesium oxide results in heterogenization, decrease of refining properties and deterioration of some technological, technical and economic process indices. Therefore, study and elaboration technology of rational composition magnesia slags forming by periods of a heating in EAF is an actual task. Results of numerical simulation of slag temperature and chemical composition effect on MgO saturation concentration during different melting periods in EAF presented. Besides, results of analysis of refining abilities of magnesia slags depending on MgO saturation degree also presented study of magnesia slags viscosity effect depending on MgO basicity and saturation concentration, as well as magnesia slag chemical and phase composition effect on foaming efficiency. Results of theoretical and experimental study were used as a base of elaboration rational slag composition by periods of melting in the EAF and technological techniques of their formation. A technology elaborated and implemented at PAO “Seversky pipe plant” EAF shop by leaving some amount of high-magnesia slags of the previous heat and addition in two stages high-magnesia flux of “Magma” grade during the oxidizing period. This resulted in a record resistance of the refractory EAF lining, exceeding 1900 heats within a campaign and a high level of technological, technical and economic process indices.

The effect of pipe billet production technology and of the order of introducing rare-earth elements and calcium on nonmetallic inclusion composition and morphology is studied. The correlation of inclusion morphology with corrosion resistance and casting suitability for steel in a CBCM is evaluated.

A method is described for recycling dust that settles in the gas-cleaning filters used for electric steelmaking furnaces at the Severskii Pipe Plant. A description is also given of a technology for making iron-bearing granules which are based on this dust and also contain refining slag from a ladle-furnace. It is shown that the granules can be used as an iron-bearing additive in the production of Portland-cement clinker. Results from tests of the granules are reported.

New experomental data on polarization and spin--correlation parameters in the (p,2p) reaction with nuclei are presented. The experiment was aimed to study a modification of the proton--proton scattering matrix.

Measures to optimize the production of corrosion-resistant steel have been introduced at OAO Severskii Trubnyi Zavod. They ensure that the steel’s content of corrosive nonmetallic inclusions of the first and second type is no more than 2 mm −2 . The measures were developed on the basis of research on the morphology and composition of nonmetallic inclusions and their formation and also current concepts regarding the formation and removal of corrosive nonmetallic inclusions.

Deoxidation technology and economic steel microalloying with complex boron-containing ferroalloy, i.e., ferro-silicon-boron, instead of expensive cored wire with FB17 filler, has been developed and introduced for the first time at the Severskii Pipe Plant.

The Severskii Pipe Plant has developed a technology for obtaining continuous-cast semifinished products made of pipe steels alloyed with cerium. Use of the technology makes it possible to homogeneously distribute the REM over the volume of the steel and give it satisfactory castability on continuous casters operating in the automatic regime. Up to 900 tons of liquid steel can be cast in a single series with the use of this technology.

Technologies have been developed for recycling all of the fine-grained wastes formed in metallurgical production operations at the Severskii Pipe Plant. The wastes are recycled into iron-flux briquettes. The optimum compositions of the briquettes were determined and industrial batches of briquettes were made and tested in an open-hearth furnace and 5-ton and 135-ton electric-arc furnaces. The results show the economic and environmental expediency of briquetting fine-grained industrial waste products and using them in steelmaking.

Development and assimilation of a production method for smelting periods in an EAF with rational composition magnesia slags are described. A set of engineering methods for improving EAF operating efficiency is developed and introduced.

A new unit has been designed to cool metal samples to the required temperature. Compressed gas is used as the cooling medium in the unit and is induced to vibrate by an acoustic radiator. Use of the unit in the electric steelmaking shop at the Severskii Pipe Plant has made it possible to obtain metal samples which are evenly cooled over their entire surface. The amount of compressed air used in the cooling operation is reduced appreciably.

Optimal carburization principles are formulated for the production of pipe steel when using a superpowerful arc furnace. Laboratory and industrial research confirms the significance of combining reduction and carburization, the quality of the material used for carburization, and the time at which the carbon content is corrected. The use of silicon carbide for combined carburization and reduction of the crude steel proves effective.

The polarization of the secondary protons in the (p, 2p) reaction with the S-shell protons of nuclei 4He, 6Li, 12C, 28Si, 40Ca was measured at 1 GeV unpolarized proton beam. The spin correlation parameters C ij for the 4He and 12C targets also were for the first time obtained as well. The polarization measurements were performed by means of a two-arm magnetic spectrometer, each arm of which was equipped with the multiwire-proportional chamber polarimeter. This experiment was aimed to study a modification of the proton-proton scattering matrix in the nuclear medium.

Analysis shows that the disequilibrium of melts may be used to characterize metal quality and to optimize smelting technology. For the production of pipe steel by means of a superpowerful DSP-135 arc furnace, a ladle-furnace unit, a vacuum-treatment system, and a continuous-casting machine, the sources of melt disequilibrium are studied in relation to the properties of the final steel. That provides the basis for the development of parameters characterizing different stages of the process. The proposed improvements in smelting technology are shown to be very efficient.

We introduce a project of new cooled infrared spectrometer-photometer for 6-m telescope BTA (Special Astrophysical Observatory of Russian Science Academy). The device would extend the wavelength range accessible for observations on the 6-m BTA telescope toward near infrared (0.8-2.5 um).

Hadron production in lepton-nucleus interactions at high energies is considered in the framework of developing Monte Carlo event generator HARDPING (HARD Probe INteraction Generator). Such effects as formation length, energy loss and multiple rescattering for produced hadrons and their constituents are implemented in the HARDPING 2.0 generator. Available data from HERMES collaboration on hadron production in lepton-nucleus collisions are described by the present version of the HARDPING generator in a reasonable agreement.

The polarization of the secondary protons (P1,2) in the (p,2p) reaction with the S - shell protons of nuclei 4He, 6Li, 12C, 28Si, 40Ca was measured at 1 GeV unpolarized proton beam. The spin correlation parameters Cij for the 4He and 12C targets also were for the first time obtained. The polarization measurements were performed by means of a two - arm magnetic spectrometer each arm of which was equipped with multiwire - proportional chambers polarimeter.

Monte Carlo event simulation with BFKL evolution is discussed. We report current status of a Monte Carlo event generator ULYSSES with BFKL evolution implemented. The ULYSSES, based on Pythia Monte Carlo generator, would help to reveal BFKL effects at LHC energies. In particular, such an observable as dijet K-factor can serve as a source of BFKL dynamics at the LHC, and it would also help to search for new physics.

The microheterogeneity of liquid and solid metal is investigated. For steel from open-hearth furnaces, the limits of carburization in ladle-furnace units ensuring the required properties of continuous-cast blank and the final pipe are determined.