Alikulov Sh. Sh. – Navoiy State Mining Institute, Navoiy, the Republic of Uzbekistan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Data analysis of mathematical modeling of uranium underground leaching solutions filtration from ore with low permeability
makes it possible to detect unworkable zones in the processed ore-bearing horizon, calculate different variants of
processing and find the optimum one. On the basis of hydrodynamic schemes of ore-bearing horizon development with
working solutions it is possible to find the main parameters of solutions motion along the tubes of current. Placing the
equations of kinetics on the motion of solutions along the tubes of current, i.e. reducing the given system to onedimensional motion, it is possible to get forecast model of commercial component concentration change in extraction
solutions. Depending on the stated goal, the problems can be solved as well as in a plan and in the section of production
horizon. Filtration modeling is typically carried out in 3D MAX program with the help of devices which have the principle
of electrohydrodynamic analogy in the foundation. When constructing solutions flow net for test fields of underground
leaching, the determination of fluid heads for every point is fulfilled in accordance with the chosen scale.
Key words: uranium leaching; kinetics; filtration coefficient; modeling; uranium; development system; 3D MAX program.
REFERENCES
1. Grabovnikov V. A. Geotekhnologicheskie raschety i issledovaniia pri razvedke mestorozhdenii metallov dlia
podzemnogo vyshchelachivaniia [Geotechnological calculations and investigations when exploring ore deposits for
underground leaching]. Moscow, OTsNTI VIEMS Publ., 1978. 119 p.
2. Krichevets G. N. Matematicheskie modeli i programmy dlia gidrogeologicheskikh i geotekhnologicheskikh raschetov
[Mathematical models and programs for hydrogeological and geotechnological calculations]. Moscow, MGRI Publ.,
1987. 145 p.
3. Kalabin A. I. Dobycha poleznykh iskopaemykh podzemnykh vyshchelachivaniem i drugimi geotekhnologicheskimi
metodami [Mineral production with the help of underground leaching and other geotechnological methods]. Moscow,
Atomizdat Publ., 1981. 357 p.

Rakhmeev R. N., Voiloshnikov G. I., Fedorov Iu. O., Chikin A. Iu. – IRGIREDMET JSC, Irkutsk, the Russian
Federation. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
88 «Известия вузов. Горный журнал», № 5, 2017 ISSN 0536-1028
The article describes the results of the laboratory experiments for X-ray radiometrical method of separation of the –6+3 mm
size diamond-bearing gravity concentrate at the X-ray fluorescence separator with gas detector. In the result of the
laboratory experiments over the formed collection of diamond crystals and main associated minerals and rocks their
substantial difference within analytical areas of calcium, iron, and zircon has been revealed – chemical elements not
presented in diamond crystals and widely presented in other grains. At that, the scattered X-radiation level of diamonds
is significantly higher than the level of associated minerals and rocks. The specified differences are correct for all diamond
crystals regardless of their X-ray fluorescence capacity, and are used as a main indicator of separation. The said
experiments showed demonstratively that the proposed separation method and the identified separation indicator provide
recovery of all diamonds, including rejected in tailings of X-ray fluorescence separators, with high efficiency and selectivity.
Key words: diamond; upgrading; recovery; X-ray fluorescence separator; secondary X-ray spectrum; scattered radiation;
characteristic radiation; fluorescence.
REFERENCES
1. Separators manufactured by RRE “Bourevestnik”. Available at: www.bourevestnik.ru/products/separatory.html
(Access date March 31st, 2017). (In Russ.)
2. Makalin I. A. [Study of X-ray luminescent properties of minerals of “Arkhangelsk” tube]. Izvestiya vysshikh uchebnykh
zavedenii. Gornyi zhurnal – News of the Higher Institutions. Mining Journal, 2012, no. 7, pp. 80–84. (In Russ.)
3. Mironov V. P. [Raman scattering in diamonds from the concentrates and tailings of combined concentration scheme].
Materialy IV kongressa obogatitelei stran SNG, Moskva, 19.03–21.03.2003. [Proc. of the 4th CIS Сongress of mineral
processing engineers. Moscow, March 19th–21st, 2003]. Moscow, 2003, pp. 67–69.
4. Dementiev V. E., Fedorov Iu. O., Kononko R. V., Rakhmeev R. N. Sposob rentgenoradiometricheskoi separatsii
almazosoderzhashchikh materialov [The method of X-ray radiometrical separation of diamond-bearing materials].
Patent RF, no. 2551486.
5. Tsypin E. F. Informatsionnye metody obogashcheniia poleznykh iskopaemykh: ucheb. posobie [School book
“Information methods of minerals concentration”]. Ekaterinburg, UrSMU Publ., 2015. 206 p.
6. Mokrousov V. A., Lileev V. A. Radiometricheskoe obogashchenie neradioaktivnykh rud [Radiometrical concentration
of nonradioactive ore]. Moscow, Nedra Publ., 1979. 192 p.
7. Shemiakin V. S., Fedorov Iu. O., Fedorov M. Iu., and others. Osnovy rentgenoradiometricheskogo obogashcheniia
poleznykh iskopaemykh: nauch. monografiia [Scientific monograph “The fundamentals of X-ray radiometrical mineral
concentration”]. Ekaterinburg, Fort Dialog-Iset' Publ., 2015. 250 p.
8. Rakhmeev R. N., Chikin A. Iu., Fedorov Iu. O. [The use of X-ray radiometrical concentration to upgrade diamondbearing products]. Gornyi informatsionno-analiticheskii biulleten’ (nauchno-tekhnicheskii zhurnal) – Mining
Informational and Analytical Bulletin (scientific and technical journal), 2015, no. 19, pp. 37–42. (In Russ.)

Volkov P. S. – The Ural State Mining University, Ekaterinburg, the Russian Federation. Е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Random distribution of precious metals in the bulk of the reduced sample under its preparation for the analysis leads to
some divergence in the results of parallel analyses. The addition of the operation of concentration into the sample
preparation scheme, separate analysis of concentrate and tailings, and the calculation of the mass fraction of precious
metals with balance equation gives satisfactory convergence under the parallel analysis of samples containing precious
metals. To check the given fact the calculation of theoretical error of reduction has been fulfilled, the experiment over
the reduction of a sample of artificial mixture of quartz with sample weight getting has been fulfilled, mass fraction of lead
in sample weight has been determined. Lead panning and heavy fraction weighting are used as the method of analysis.
The acquired data make it possible to speak about convergence of theoretically calculated and experimentally obtained
relative error of reduction. As the result of artificial mixture concentration at self-cleaning centrifugal separator under low
intensity of gravitation field, the mass fraction in the concentrate and the tailings of the separator has been determined.
It has been determined that the use of model material under the estimation of the sample reduction error makes it possible
to acquire the result close to the theoretically determined one. The introduction of the operation of concentration into the
scheme of sample preparation leads to the decrease of the sample preparation relative error, which indicates high
efficiency of concentration during sample preparation.
Key words: sample preparation; reduction error; precious metals; heavy minerals; artificial mixture; centrifugal separator.
REFERENCES
1. Lokonov M. F., Petrova M. I., Reingardt E. P. [The methods of preparation for samples analysis of ore containing
intermetallic compounds of platinum metals]. Obogashchenie rud – Mineral Processing, 1984, no. 1, pp. 44–47.
(In Russ.)
2. Litvintsev V. S., Ponomarchuk G. P., Iatlukova N. G., Banshchikova T. S., Shokina L. N. [Some regularities in the
distribution of gold in silt-clay fractions of natural and technogenic formations]. Problemy osvoeniia georesursov
rossiiskogo Dal'nego Vostoka i stran ATR: mater. III Mezhdunar. nauch. konf. [Proc. 3rd Int. Sci. Conf. “The problems
of developing the resourses of the Russian Far East and Pacific Rim countries”]. Vladivostok, DVGTU Publ., 2004,
pp. 68–76. (In Russ.)
3. Hoffman E. L., Clark J. R., Yeager J. R. Gold analysis – fire assaying and alternative methods. Exploration and
Mining Geology, 1998, vol. 7, pp. 155–160. (In Russ.)
94 «Известия вузов. Горный журнал», № 5, 2017 ISSN 0536-1028
4. 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 virgin metals]. Obogashchenie rud – Mineral Processing, 2015, no. 4,
pp. 30–33. (In Russ.)
5. Kozin V. Z. Oprobovanie mineral'nogo syr'ia: nauch. monografiia [Scientific monograph “Mineral raw material
sampling”]. Ekaterinburg, UrSMU Publ., 2011. 316 p.
6. Morozov Iu. P., Falei E. A., Khamidulin I. Kh. [Development and testing of turbulization centrifugal separators].
Gornyi zhurnal – Mining Journal, 2015, no. 5, pp. 58–62. (In Russ.)
7. Falei E. A. [Optimization of laboratory turbulization centrifugal separator operation]. Nauchnye osnovy i praktika
pererabotki rud i tekhnogennogo syr'ia: mater. XIX Mezhdunar. nauch.-tekhn. konf. [Proc. 19th Int. Sci. and Pract. Conf.
“Scientific fundamentals and practice of ore and technogenic raw material processing”]. Ekaterinburg, Fort Dialog-Iset'
Publ., 2014, pp. 210–214. (In Russ.)

Kozin V. Z., Komlev A. S., Vodovozov K. 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.
Indices of technological balance are calculated by the results of sampling. Sampling is carried out with errors; it conditions
on balance indices errors. It has been shown that products separation contrast ratios in technological operations also
ISSN 0536-1028 «Известия вузов. Горный журнал», № 5, 2017 79
influence the output, extraction, and component mass calculating errors. Under low contrast ratio the calculation of
technological balance is carried out with raw errors, it leads to uncertain estimates of the situation at the factories. Real
separation contrast ratios at the copper-zinc factory are introduced. For the majority of operations separation contrast
ratios are within the limits of 1.1–2.0 but for the whole factory in general the contrast ratios for copper are equal to 7.0 and
7.4, for zinc – 16.0 and 5.4. The diagrams of determination of calculation errors depending on the contrast ratios are
introduced. Under the contrast ratios lower that 2 dependences rise sharply, it requires improving the quality of sampling
of input products in separate operations and factories as a whole.

Key words: technological balance indices; sampling errors; separation contrast ratios.

REFERENCES
1. Otrozhdennova L. A., Akkerman Iu. E., Kuchaev V. A., Aksenova G. Ia., Zavarina R. I. [The development of
the technology of copper-sulphide ore concentration at “Nurkazgan” deposit]. Obogashchenie rud – Mineral Processing,
2012, no. 6, pp. 18–22. (In Russ.)
2. Tsypin E. F. [Estimation of technological efficiency of concentration technology processes]. Izvestiya vysshikh
uchebnykh zavedenii. Gornyi zhurnal – News of the Higher Institutions. Mining Journal, 2001, no. 4–5, pp. 16–21.
(In Russ.)
3. Pelevin A. E. [Stage separation of iron concentrate]. Obogashchenie rud – Mineral Processing, 2007, no. 3,
pp. 10–15. (In Russ.)
4. Masalovich N. S., Ostroumov G. V., Ivanova I. D. [Confidence estimation of technological tests]. Razvedka i okhrana
nedr – Prospect and Protection of Mineral Resources, 1978, no. 8, pp. 34–38. (In Russ.)
5. Kozin V. Z. Kontrol' tekhnologicheskikh protsessov obogashcheniia [Control over the technological processes of
concentration]. Ekaterinburg, UrSMU Publ., 2010. 302 p.
6. Kozin V. Z., Komlev A. S. [Experimental determination of random sampling errors at concentrating mills].
Obogashchenie rud – Mineral Processing, 2017, no. 2, pp. 44–48. (In Russ.)
7. Kozin V. Z., Komlev A. S. [The influence of sample weight mass and the conditions of its selection on the error of the
sample analysis result]. Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal – News of the Higher Institutions.
Mining Journal, 2016, no. 5, pp. 76–83. (In Russ.)