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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Kozin V.Z.,Ural State Mining University | Komlev A.S.,Ural State Mining University
Obogashchenie Rud | Year: 2017

The procedure for experimental determination of random sampling errors is described in the GOST standard 14180-80. In compliance with this procedure, from an ore shipment (in accordance with the standard, to be processed per shift) it is necessary to select a series of spot samples with an interval smaller than correlation time, thus making combined samples A and B non-informational with respect to determination of sampling errors. In the limiting case, when selecting a large number of spot samples, difference between samples A and B may be so small, as to exclude a possibility of sampling error calculation, because sampling error, in accordance with the standard comprising both sampling and samples preparation errors, will reflect only samples preparation error. The procedure application experience leads to the conclusion that samples analysis error is greater or equal to sampling error, which is incompliant with sampling conditions at processing plants. Correlation time for mass fraction of analyzed ore component at processing plants is 4-6 hours. In order to provide for sampling intervals exceeding correlation time, sampling is proposed to be done in 24 hours, forming samples A and B from two-hour samples, shifted in twelve-hour interval, and comprised of a number of spot samples, adopted at the plant in question. This permits to implement experimental determination of sampling errors using routine samples at the plant. A rational alternative for determination of sampling errors without forming samples A and B is proposed, completely complying with routine sampling at the plant. It consists in using routine replicate analyses for analysis error calculation, analytic formula of samples preparation scheme and routine sampling results' variance calculation errors, completely avoiding the necessity for performance of special experiments.

Zapariy V.V.,Ural Federal University | Nosyrev M.B.,Ural State Mining University
Gornyi Zhurnal | Year: 2017

The article gives a retrospective description of the history of economical and technological development in one of the most important sub-branches of metallurgical industry in the Ural-primary industry. The studies are based on the modern literature and the publications issued based on the outcome of the period of interest. The authors offer a detailed characteristic and estimate of performance of the industry under extreme conditions of transition from the command economy to the market system. The presentation compares development in the Ural region and in the country as a whole. The blind sides and strong points of the process are discussed in terms of all dominant undertakings in the Ural region. The presented statistics allows tracing the process of utilization of raw material resources in the region. The current expansion of the ore supply base in the region is described. The article shows that the today commercial use of ore materials cannot be assumed optimal for the majority of marketable ore is produced in the course of mining of low-grade raw materials. Percentage of high-grade ore in overall production is low while the foreign countries carry out high-rate extraction of mostly high-grade ore. In this connection, our country is faced with high cost of ore mining and processing, necessity to storage huge volumes of waste, increased transport expenditures, excess fuel consumption and appreciable energy intake by marketable production. The authors highlight that the iron ore industry in Russia is one of the few economy branches that suffered minimal regression in the 1990s. Since the basic processes of development in the industry root in the past, the analysis of the earlier growth stages is required to understand the current trends of progression. The study has been supported by the Government of the Russian Federation, Program 211, Agreement No. 02.A03.21.0006.

Belyushin D.V.,Ural State Mining University | Lagunova Yu.A.,Ural State Mining University
Gornyi Zhurnal | Year: 2017

The study was aimed to determine factors and methods to adjust protective properties of elastic lining by analyzing impact interaction between lined impact surfaces and rock mass. The analysis of tests data on vibro-machines is presented. The experiments were carried out on a laboratory test bench simulating a vibro-feeder box at a ratio of 1:4. Using SPSS Statistics software package and the method of least squares, the regression analysis of the earlier experimental data is performed. The test data have been approximated at a high level of reliability and adequacy by the resultant regressional relationships between stresses induced in the box, pressing-in depth, parameters of protective rubber lining (hardness and area) and energy of impact simulating falling of rock fragments on working surface of mining machine. The constructed mathematical model determines rational or optimal parameters of stress state of protected surface and deformation characteristics of lining. Based on the research finding, the possibility to select the value of thickness of rubber lining layer is proved. The results are applicable in new designs of elastic lining having higher protective properties at reduced cost.

Zhukov A.,Ural State Mining University | Nizamytdnova I.N.,LLC SPC Geostra
Tyumen 2017: 5th Scientific Conference | Year: 2017

Unique highly promising geological objects inversion ring structures (IRS) were revealed according to the seismic survey in the north of Western Siberia. The relevance of the IRS study is explained due to the fact that in all drilled objects hydrocarbon deposits are discovered in the Cretaceous sediments. General patterns and features of the geological structure of the IRS were identified in the research area on the basis of seismic data MOGT-2D/3D. The issues of the origin and spread of this phenomenon are considered.

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.

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.,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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