Blinkov O. G. – Ural Federal University, Ekaterinburg, the Russian Federation. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Dmitriev V. T., Boiarskikh G. A. – The Ural State Mining University, Ekaterinburg, the Russian Federation.
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
The article introduces the results of the use of plasma technology to reinforce the elements of cutter rock drilling bits.
The method of hard facing is currently being widely used; the method is based on getting ionic component of metal in the
plasma of arc discharge. The main advantage, which has predetermined the wide spread occurrence of vacuum ionicplasma method is the fact that in within a compact and simple device it is possible to obtain plasma jet of metal with high
level of ionization and high average ion kinetic energy. It makes it possible to transfer thermodynamically-equilibrium
covering generation process into essentially non-equilibrium – straight plasma chemical synthesis. At that the values of
critical temperatures at which the required level of adhesion is obtained, high rate of connection formation reaction, and
the required level of cohesive interaction, can be reduced from 1000°С to near normal values. Furthermore, possibility
emerges to obtain coverings unique in composition with various content of components. As the result of investigations
fulfilled, optimal materials are determined, as well as parameters and regimes of plasma coating of abrasion-resistant
covering on link rails of bearing units of cutter rock drilling bits. Practical use of the investigation results will allow
significantly increase operational life and reliability of bearing units of a cutter rock drilling bit and, consequently, increase
efficiency and reduce the cost of drilling operations.

Key words: rock drilling bit; link rails; arc discharge; vacuum ionic-plasma method.

REFERENCES
1. Boiarskikh G. A., Simisinov D. I. [Comparative efficiency evaluation of rock drilling bits support elements
reinforcement]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News of the Higher Institutions. Mining
Journal, 2002, no. 5, pp. 65–72. (In Russ.)
2. Simisinov D. I., Kurbanov Ia. M., Simisinov I. L., Gorbunov V. A. [The increase of technological indices roller bit
drilling heads to drill the Uralskaia ultradeep well SG-4]. Razvedka i okhrana nedr – Prospect and Protection of Mineral
Resources, 2003, no. 6, pp. 8–10. (In Russ.)
3. Simisinov D. I., Boiarskikh G. A., Dmitriev V. T. [Self-organizing tribosystem as a means of increasing operational
efficiency of rock drilling bit supports]. Gornoe oborudovanie i elektromekhanika – Mining Equipment and
Electromechanics, 2006, no. 8, pp. 25–28. (In Russ.)
4. Serikov D. Iu., Panin N. M., Ageeva V. N. [Rock drilling bit bearing units hermetization system development].
Stroitel'stvo neftianykh i gazovykh skvazhin na sushe i na more – Oil and Gas Wells Construction on Land and Sea,
2016, no. 4, pp. 16–19. (In Russ.)
5. Popov A. N., Batalov S. P., Torgashov A. V. and others. [Peculiarities of wastage and ways of improving bits plain
bearings rigidity]. Problemy neftegazovogo kompleksa Rossii; tezisy dokl. Vseros. nauch.-tekhn. konf. [Proc. All-Russ.
Sci. and Tech. Conf. “The problems of oil and gas complex in Russia”]. Ufa, USPTU Publ., 1995, pp. 105–109.

Iudin A. V., Shestakov V. S. – The Ural State Mining University, Ekaterinburg, the Russian Federation. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
At the stage of exploratory design the problem of the choice of technology for calcareous rock cleaning from clay and
karst intrusions is solved. Decision is made, which scheme of raw material cleaning complex devices chain should be
given preference. Similar problem is examined, which took place at designing Chanvin open pit depth horizons mining.
The article introduces the results of exploratory design and development of rational flow sheets for limestone cleaning
complexes in order to compare their parameters and technical-economic indices. The present article examines variants
82 «Известия вузов. Горный журнал», № 3, 2017 ISSN 0536-1028
of complexes technology flow sheets on the basis of native and foreign equipment; technical-economic estimation of
the compared variants of complex flow sheets is introduced.

Key words: raw material dry cleaning; clay intrusions; screen; limestone cleaning complex; qualitative-weighted flow
sheet; capacity; profitability index.

REFERENCES
1. Iudin A. V., Kovyrzin Iu. V., Shchavlev E. G., Koshev G. Ia., Primak V. S. [Limestone cleaning from clay technology
development under the exploitation of karst deposit]. Gornyi zhurnal – Mining Journal, 2009, no. 10, pp. 61–63.
(In Russ.)
2. Iudin A. V., Fomin V. I., Koshchev G. Ia., Konoplev E. V., Peters A. A. [Limestone dry cleaning dump transshipping
complex at Chanvin open pit]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News of the Higher Institutions.
Mining Journal, 1996, no. 7, pp. 91–96. (In Russ.)

Kozin V. Z., Komlev A. S., Volkov P. S. – The Ural State Mining University, Ekaterinburg, the Russian Federation.
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
When sampling products with low mass concentration of determined components relative accidental inclination may be
high. Under the low quantity of grains which contain the determined component in a sample, probable systematic
inclination may constitute 100%. Thus, large gold grains, long-fiber asbestos and other may not be found in the weighed
quantities for analysis. General solution of accidental and probable systematic inclinations reduction is connected with the
inclusion of concentration operation in the scheme of samples preparation. It helps fulfilling the analysis over the large
sample mass. Concentration operation under samples preparation becomes efficient under the extraction of determined
component into the concentrate with the value which is higher than the one that depends on the analysis inclinations, both
ore and tailings. Transfer to the analysis of great samples at mass allows reducing probable systematic inclination up to
acceptable low values.
Key words: samples preparation scheme; concentration operation; probable systematic inclination.
REFERENCES
1. Romanchuk A. I., Nikulin A. I., Zharkov V. V., Koblov V. V. [Technology and hardware to recover free gold out of
the samples of gold ore]. Gornyi zhurnal – Mining Journal, 2003, no. 12, pp. 79–83. (In Russ.)
2. Petrov S. V., Bederova L. L., Borozdin A. P. [Regarding the methods of reliable determination of precious metals
content in the samples with large winning of native metals] Obogashchenie rud – Mineral Processing, 2015, no. 4,
pp. 44–48. (In Russ.)
3. Kavchik B. K. [The scheme of samples handling with preliminary extraction of coarse gold]. Zolotodobycha – Gold
Mining, 2013, no. 177, pp. 27–30. (In Russ.)
4. Kozin V. Z. Oprobovanie mineral'nogo syr'ia [Mineral raw materials sampling]. Ekaterinburg, UrSMU Publ., 2011.
316 p.
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5. Shemetov P. A., Bychkov V. N. [Quality control over the ore flow in Muruntau open pit]. Gornyi vestnik
Uzbekistana – Mining News of Uzbekistan, 2001, no. 2, pp. 31–35. (In Russ.)
6. Kozin V. Z., Komlev A. S. [Combined method of concentration products sampling and the equipment for its
realization]. Obogashchenie rud – Mineral Processing. 2014, no. 3, pp. 28–32. (In Russ.)
7. Komlev S. A. [Experimental determination of probable systematic inclination when sampling products of
concentration with combined method]. Gornyi zhurnal – Mining Journal, 2016, no. 6, pp. 84–90. (In Russ.)

Borisov F. I., Morin A. S., Brovina T. A. – Siberian Federal University, Krasnoyarsk, the Russian Federation.
E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
A new way of dust suppression in open pits is suggested, based on water pulverization from pressure pipelines of water
drainage facilities. The elements of the dust suppression system have been examined, which are located along open pit
automobile roads. The article introduces the methods of detecting pressure characteristic of water drainage facility with
track water intake for dust prevention. Calculation of possible parameters of water drainage combined with the suggested
moistening system operation is fulfilled. On the basis of the obtained performance figures some recommendations on the
pumps selection are stated for open pit water drainage facilities with track consumption water flow rate in the areas of
roads moistening; conditions of these facilities rational use are also justified. It is shown, that capacity overstock of a pump
station under normal water inflows piping out to the open pit is an important factor for water drainage facilities effective
use to reduce air dust content.
Key words: opencast mining; safety rules; labour protection; poisonous gases; aerial dust; open pit roads moistening;
water drainage facilities; power water conduits; track water intake; hydraulic resistances; pressure loss; pressure
characteristic of a pipeline; pressure and pump capacity; normal water inflows.
REFERENCES
1. Nikitin V. S., Levinskii O. B., Suslov N. V. Obespylivanie atmosfery kar'erov [Dust removal in the atmosphere of
open pits]. Tashkent, FAN Publ., 1974. 160 p.
2. Semenenko B. A., Bukhman Ia. Z., Simakov P. G., Tarashchik A. D., Makarov V. I. [Dust control on open pit
automobile roads]. Opyt bor'by s zagazovannost'iu i zapylennost'iu atmosfery kar'erov [The experience of gas
72 «Известия вузов. Горный журнал», № 3, 2017 ISSN 0536-1028
contamination and dustiness protection in the atmosphere of open pits]. Moscow, NII Tsvetmetinformatsiia Publ., 1968,
pp. 69–75.
3. Morin A. S. [Investigation of optimal schemes and means of artificial ventilation in deep open pits]. Bezopasnost'
truda v promyshlennosti – Industrial Workplace Safety, 2002, no. 12, pp. 43–47. (In Russ.)
4. Morin A. S. [Fundamentals of open pit ventilation systems design with flexible floating pipeline]. Bezopasnost' truda
v promyshlennosti – Industrial Workplace Safety, 2003, no. 10, pp. 31–34. (In Russ.)
5. Morin A. S., Butkin V. D., Novoselov R. G. [Energy saving schemes and ways of artificial ventilation in deep open
pits]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News of the Higher Institutions. Mining Journal, 2003,
no. 6, pp. 21–27. (In Russ.)
6. Borisov F. I., Morin A. S., Drozdova N. A., Borisov D. F. [Ventilation complex with two-channel pneumatic air
conduit for opencast mining]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News of the Higher Institutions.
Mining Journal, 2016, no. 2, pp. 27–38. (In Russ.)
7. Morin A. S., Brovina T. A., Borisov F. I., Demchenko I. I. Sposob preduprezhdeniia i podavleniia pylegazovykh
vybrosov v kar'ere [The method of gas and dust outburst prevention in an open pit]. Patent RF, no. 2572100 E21F 5/04,
2015.
8. Morin A. S., Borisov F. I., Brovina T. A. Sposob regulirovaniia rezhima raboty kar'ernoi vodootlivnoi ustanovki
[The method of monitor control over open pit water drainage facilities]. Patent RF, no. 2580329 E02D 19/10, 2016.
9. Grishko A. P., Sheloganov V. I. Statsionarnye mashiny i ustanovki [Fixed machines and installations]. Moscow,
MSMU Publ., 2004. 328 p.
10. Geier V. G., Dulin V. S., Borumenskii A. G. and others. Gidravlika i gidroprivod [Hydraulics and hydraulic drive].
Moscow, Nedra Publ., 1981. 295 p.
11. Koshkarov V. E., Valiev N. G. [Experience and further use of emulsified bitum in automobile roads construction and
exploitation]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News of the Higher Institutions. Mining
Journal, 2011, no. 5, pp. 13–20. (In Russ.)