Obogashchenie Rud

The third issue of the journal opens with publications devoted to beneficiation as a technology and its individual processes. They present a combined processing of tungsten-molybdenum ores based on the differentiation of intra-block reserves using a new concept of lump sorting; the reagent mode of coking coals fine classes flotation is justified to improve the quality of coal concentrate and reduce waste; due to the high reliability of the neural network model, the effectiveness of using multifactor matrices for laboratory tests has been proven.

The article on technological mineralogy provides data on the content of native gold in complex placers of natural and technogenic origin in Russia. The basic technological scheme of the associated extraction of free gold into an independent commercial gold-containing concentrate is also presented.

For the purpose of complex use of raw materials in the publication of the corresponding section, a technology for pyrometallurgical processing of quartz-leucoxene concentrate is proposed. It also makes an assumption about the possibility of using the resulting products (pseudobrukit) as a raw material for the production of titanium compounds by traditional sulfuric acid methods.

The article in the «Equipment» section introduces a new method for determining the intensity of wear of coatings of pipelines and pump parts, head losses and a decrease in energy efficiency. On its basis, an experimental hydrotransportation unit was created for diagnosing the wear resistance of materials of hydrotransport systems. The topic is continued by the material based on the experience of a particular enterprise about the service life of gravel pump impellers during the beneficiation of diamond-bearing sands at the mines of Almazy Anabara JSC (Yakutia).

In «Historical сhronicles» specialists can get acquainted with the history of the production of road crushed stone in the USSR in the pre-war period.

Please find more details below, or order your printed or electronic version of the Journal.

BENEFICIATION TECHNOLOGY
ArticleName	Improvement of the ore mining and processing technology for the Tyrnyauz deposit
ArticleAuthors	Khakulov V. A., Kononov O. V., Shapovalov V. A., Karpova Zh. V.
ArticleAuthorsData	Kabardino-Balkarian State University (Nalchik, Russia): Khakulov V. A., Head of Chair, Doctor of Engineering Sciences, Professor, vkh21@yandex.ru Shapovalov V. A., Associate Professor, Doctor of Physical and Mathematical Sciences, Associate Professor Karpova J. V., Master's Degree, Candidate of Engineering Sciences Lomonosov Moscow State University (Moscow, Russia): Kononov O. V., Associate Professor, Candidate of Geological and Mineralogical Sciences, Associate Professor, Academician of the Russian Academy of Natural Sciences
BENEFICIATION PROCESSES
ArticleName	Improvement of the fine coking coal flotation technolgy
ArticleAuthors	Alexandrova T. N., Kuskov V. B., Afanasova A. V., Kuznetsov V. V.
ArticleAuthorsData	Saint-Petersburg Mining University (St. Petersburg, Russia): Aleksandrova Т. N., Head of Chair, Doctor of Engineering Sciences, Professor, Aleksandrova_TN@pers.spmi.ru Kuskov V. B., Associate Professor, Candidate of Engineering Sciences, Associate Professor, Kuskov_VB@pers.spmi.ru Afanasova А. V., Teaching Assistant, Candidate of Engineering Sciences, Afanasova_AV@pers.spmi.ru Kuznetsov V. V., Postgraduate Student
ArticleName	Thermochemical processing of bauxites of the North Onega region
ArticleAuthors	Dubovikov О. A., Sundurov A. V., Ustinov I. D.
ArticleAuthorsData	St. Petersburg Mining University (St. Petersburg, Russia): Dubovikov O. A., Professor, Doctor of Engineering Sciences, dubovikov_OA@pers.spmi.ru Sundurov A. V., Postgraduate Student, s185092@stud.spmi.ru REC «Mekhanobr-Tekhnika» (St. Petersburg, Russia): Ustinov I. D., Head of the Scientific and Educational Center, Doctor of Chemical Sciences, ustinov_id@mtspb.com
ArticleName	Digital technology for optimizing the sodium sulphide dosage during copper ore flotation
ArticleAuthors	Mashevskiy G. N., Ushakov E. K., Yakovleva T. A.
ArticleAuthorsData	MEK-Mining (St. Petersburg, Russia): Mashevskiy G. N., Chief Process Engineer, gennadii.mashevskii@mekgroup.ru St. Petersburg Mining University (St. Petersburg, Russia): Ushakov E. K., Postgraduate Student, s195065@stud.spmi.ru Yakovleva T. A., Postgraduate Student, s205060@stud.spmi.ru
TECHNOLOGICAL MINERALOGY
ArticleName	Typomorphic and processrelated features of associated gold in complex placer deposits
ArticleAuthors	Levchenko E. N., Grigoreva A. V.
ArticleAuthorsData	Institute of Mineralogy, Geochemistry and Crystal Chemistry of Rare Elements IMGRE (Moscow, Russia): Levchenko E. N., Deputy General Director, Doctor of Geological and Mineralogical Sciences, lev_imgre@rambler.ru Institute of Ore Deposit Geology, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences (IGEM RAS) (Moscow, Russia): Grigoreva A. V., Senior Researcher, Candidate of Geological and Mineralogical Sciences
COMPLEX RAW MATIREAL UTILIZATION
ArticleName	Principles of pyro-hydrometallurgical processing of quartz-leucoxene concentrate with the formation of a pseudobrukite phase
ArticleAuthors	Kuzin E. N., Kruchinina N. E., Fadeev A. B., Nosova T. I.
ArticleAuthorsData	Mendeleev University of Chemical Technology (Moscow, Russia): Kuzin E. N., Associate Professor, Candidate of Engineering Sciences, e.n.kuzin@muctr.ru Kruchinina N. E., Dean, Doctor of Engineering Sciences, Professor, krutch@muctr.ru Fadeev A. B., Postgraduate Student, fadeev89@mail.ru Nosova T. I., Student, nti16041998@gmail.com
EQUIPMENT
ArticleName	Experimental hydrotransportation unit for testing material resistance of pipelines and parts of dredging pumps to hydroabrasive wear
ArticleAuthors	Atroshchenko V. A., Avksentiev S. Yu., Makharatkin P. N., Trufanova I. S.
ArticleAuthorsData	Saint Petersburg Mining University (Saint Petersburg, Russia): Atroshchenko V. A., Postgraduate Student, vik3137@yandex.ru Avksentiev S. Yu., Associate Professor, Candidate of Engineering Sciences, avksentiev@mail.ru Makharatkin P. N., Associate Professor, Candidate of Engineering Sciences, pavelnik@mail.ru Trufanova I. S., Associate Professor, Candidate of Engineering Sciences, trufanova_inna@mail.ru
EXPERIENCE OF THE ENTERPRISES
ArticleName	On the streamlined service life of impellers of gravel pumps in the beneficiation of diamondiferous sands
ArticleAuthor	Ovchinnikov N. P.
ArticleAuthorData	Mining Institute of North-Eastern Federal University (Yakutsk, Russia): Ovchinnikov N. P., Director, Candidate of Engineering Sciences, Associate Professor, ovchinnlar1986@mail.ru
HISTORICAL CHRONICLES
ArticleName	Development of technology and equipment for the manufacture of road stone in the USSR (pre-war period)
ArticleAuthors	Kamenev E. V., Kameneva E. E.
ArticleAuthorsData	Petrozavodsk State University (Petrozavodsk, Russia): Kamenev E. V., Associate Professor, Candidate of Historical Sciences, ev.kamenev@yandex.ru Kameneva E. E., Head of Laboratory, Candidate of Engineering Sciences, Associate Professor, elena.kameneva@mail.ru

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