Yekaterinburg, Russia

Ural State Mining University
Yekaterinburg, Russia

Ural State Mining University is situated in Yekaterinburg, Russian Federation. It was founded in 1914. In 1917 Nicholas II signed an order titled "On keeping of the Yekaterinburg Institute of Mines under the patronage of His Majesty the Emperor and on giving to this educational establishment the title of The Emperor Nicholas II Ural Institute of Mines".It is the oldest establishment of higher education in the Middle Urals. It offers education in geology, geophysics, engineering and management of mining, geological prospecting. The university offers dozens of graduate and postgraduate programmes. The geologists of the university have discovered hundreds of deposits in Urals and Siberia. Wikipedia.

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Komissarov A.P.,Ural Federal University | Lagunova Y.A.,Ural State Mining University | Lukashuk O.A.,Ural Federal University
Procedia Engineering | Year: 2016

It is shown that with the increase in capacity and weight of excavators their specific indices of functioning remain practically at the same level corresponding to the energy consumption value (available power) for excavators of each type (electromechanical or hydraulic). That value depends on the type of operational equipment, the ratio between linear and weight parameters and other factors. New layout of the operational equipment is suggested, featuring an internal closure of workloads within its operating element. The layout includes the operating element in the form of two oppositely arranged buckets and the closure mechanism. Energy efficiency index for single-bucket excavators is proposed. © 2016 The Authors.

Galakhov V.R.,Ural State Mining University | Shkvarin A.S.,RAS Institute of Metal Physics | Semenova A.S.,RAS Institute of Solid State Chemistry | Uimin M.A.,RAS Institute of Metal Physics | And 4 more authors.
Journal of Physical Chemistry C | Year: 2010

Nickel and iron nanoparticles encapsulated in carbon were synthesized by contactless levitation melting of metal drops and their evaporation in a flow of an inert gas containing a hydrocarbon. The products were characterized by means of transmission electron microscopy, photoelectron spectroscopy, and X-ray absorption spectroscopy. It was established that carbon coating protects the metallic nanoparticles from the environmental degradation by providing a barrier against oxidation and ensures stability of the ferromagnetic core metal inside that provides their extremely high catalytic activity, biocompatibility, and nontoxicity. © 2010 American Chemical Society.

Galakhov V.R.,RAS Institute of Metal Physics | Shamin S.N.,RAS Institute of Metal Physics | Mironova E.M.,Ural State Mining University | Uimin M.A.,RAS Institute of Metal Physics | And 2 more authors.
JETP Letters | Year: 2013

The electronic structure of carbon shells of carbon encapsulated iron nanoparticles carbon encapsulated Fe@C has been studied by X-ray resonant emission and X-ray absorption spectroscopy. The recorded spectra have been compared to the density functional calculations of the electronic structure of graphene. It has been shown that an Fe@C carbon shell can be represented in the form of several graphene layers with Stone-Wales defects. The dispersion of energy bands of Fe@C has been examined using the measured C Kα resonant X-ray emission spectra. © 2012 Pleiades Publishing, Ltd.

Makarov V.N.,Ural State Mining University | Davydov S.Y.,Ural State Mining University
Refractories and Industrial Ceramics | Year: 2015

Patented technological designs that implement vortex control of air flow in the blade passages of the impellers of radial ventilators with adaptive vortex generators in order to increase ventilation efficiency at industrial enterprises are investigated on the basis of results of development studies. A technique for the design of radial ventilators with adaptive vortex generators is proposed on the basis of the method of conformal transformations with the use of the theory of adjoint vortices, the aerodynamics of bodies with air flow, and the theory of a function of a complex variable. © 2015 Springer Science+Business Media New York

Kozin V.Z.,Ural State Mining University
Obogashchenie Rud | Year: 2014

The issues of metal product balance calculation at concentrating plants are considered. The following recommendations are developed. Product recovery may be calculated by two methods: through using component mass in concentrate and feed ore for calculations and through using component mass in concentrate and tailings for calculations. The main problem consists in coordination of indicators used in calculation, taking into account product accumulation in tanks and bins. If head sampling is unavailable, product recovery may be calculated on the basis of produced and accumulated masses of concentrates and tailings. Tailings in this case should include all products that are not related to con- centrate under consideration. Product recovery is equal to sum of process recovery and relative imbalance. Product imbalance may be expedi- ently divided into two parts: occasional and non-occasional. Since valuable component mass in concentrates is also determined with errors, for correction it is expedient to distribute occasional part of imbalance proportionately with each product contribution to component mass in product balance and relative errors in their mass fraction sampling. It is expedient to distribute non-occasional part of imbalance in accordance with positive and negative constituents of sampling imbalance errors with respect to ore and tailings, and also concentrate. It is not necessary to include products in circuit into imbalance distribution.

Apakashev R.A.,Ural State Mining University | Davydov S.Y.,Ural State Mining University
Refractories and Industrial Ceramics | Year: 2015

An energy-saving method is proposed for synthesizing very fine tungsten carbide powder within which the starting tungsten-containing raw material used is ammonium paratungstate, pressed with carbon-containing material. The tungsten carbide preparation method proposed provides marked energy saving as a result of reducing temperature and starting reagent heating duration. Predominance of tungsten carbide particles in synthesized material is demonstrated, corresponding to two main size ranges: 100-200 nm and 2.0-8.0 µm. Clear facets are typical for particles of the micron range, missing from nanosize particles. © 2015 Springer Science+Business Media New York.

Amdur A.M.,Ural State Mining University | Vatolin N.A.,RAS Institute of Metallurgy
Doklady Chemistry | Year: 2015

The effect of thermal destruction of coal on the parameters of reduction of iron oxides from concentrates has been experimentally studied with an STA 449C Jupiter differential scanning calorimeter equipped with a QMC 230 mass spectrometer. It has been found that thermal destruction increases the reduction rate and decreases the temperature of the beginning of the process because of an increase in the reduction potential of the gas phase and in the specific surface area of coal. The products of thermal destruction of coal hardly participate in the carburization of the reduction product. © 2015 Pleiades Publishing, Ltd.

Apakashev R.,Ural State Mining University | Valiev N.,Ural State Mining University
Advanced Materials Research | Year: 2014

The effect of nanostructuring on physical and mechanical properties of metallic materials is studied. It has been established that the tested samples of nanostructured metal materials exhibit the specific strength and durability enhanced by 11-32% which at the corrosion rate less than about 11%. In the example of titanium at 1000 K is shown that the thermal diffusivity of nanostructured metal is 1,2 times lower than in conventional polycrystalline state. © (2014) Trans Tech Publications, Switzerland.

Elyukhina I.,South Ural State University | Apakashev R.,Ural State Mining University
AIP Conference Proceedings | Year: 2013

We discuss possibility for observation and identification of weakly non-Newtonian rheological behaviour at small shear rates. Some mathematical models of experiment and data processing are given. As an example, we analyze capillary, inertial and oscillating-cup viscometers suitable to study high-temperature melts. © 2013 AIP Publishing LLC.

Apakashev R.,Ural State Mining University | Valiev N.,Ural State Mining University
Advanced Materials Research | Year: 2013

There was studied the effect of directional flow of metallic melt on the forming of the structure of an ingot. Authors found out the possibility of the forming of micro- and nanostructures of solid metal by treatment in a molten state without the use of alloying elements and with negligible energy consumption on the deformation. © (2013) Trans Tech Publications, Switzerland.

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