Composition and conditions of the late Mesozoic volcanism occurrence of the northern part of the Borschovochny ridge (Eastern Transbaikalia)

On the basis of geochemical study results composition heterogeneity and formation conditions of late Mesozoic subvolcanic rocks from northern part of Borschovochny ridge by an example of shadoronsky and abgatuysky complexes are discussed. Obtained results show that volcanic rocks of both complexes have heterogeneous composition and differ from each other in level and other features of alkalinity. Rare and trace elements geochemistry study results show that there is a significant enrichment with LILE (Cs, Rb, Ba) and some depletion with HFSE (Nb, Ta), meanwhile the correlation between Th and Yb indicates conditions of active continental margin. Gd/Yb and La/Sm ratios allow to conclude that shadoronsky complex rocks originated from garnet-stable mantle source (partial melting of 5% of garnet peridotite), while abagatuysky complex rocks originated from transitional garnet-spinel mantle

PSA-stage Features of the Hybrid Membrane-sorption Oxygen Concentrator

The paper considers the principle of the organization of the hybrid membranesorption oxygen concentrator and the work of the PSA stage of the hybrid system. The use of hybrid membrane-sorption gas separation systems can significantly reduce the energy consumption of plants, as well as to neutralize such disadvantages as contamination of the product flow by the products of abrasion of sorbents, through the use of highly selective polymer membrane, and the restriction on the oxygen concentration when using a single membrane stage, through its use after the PSA stage. In this paper, we propose an arrangement for the operation of the PSA stage of a hybrid system consisting of three adsorbers and providing a constant product flow of the PSA stage necessary to ensure continuous feed flow to the membrane stage of the system. Each of the adsorbers in this system passes through three main stages: filling, displacement (adsorption), and discharge (desorption). Moreover, the filling is not from the compressor, but part of the product flow of the displaced adsorber. The results of the operation of the system organized by the proposed method are compared with the results of the operation of modern gas separation systems on the market.     Keywords: Sorption, air separation, pressure-swing adsorption, PSA, hybrid technologies, oxygen concentrator, recycling, oxyge

Geological structure and prospects of noble metal ore mineralization of the Khayrkhan gabbroid massif (Western Mongolia)

An analysis of the distribution of noble metals in zones of sulfide mineralization makes it possible to justify the isolation of four ore-bearing horizons with a specific geochemical zonation. A rise in the gold content relative to palladium and platinum is observed from the bottom upwards along the section of the stratified series of gabbroids. The study of the mineral phases of sulphides and the noble minerals itself indicates the evolution of hydrothermal solutions, which determines the different activity and mobility of the fluid (mercury, tellurium, sulfur) and ore (copper, nickel, iron, platinum, gold and silver) components

Development of theory and devices water dynamic air conditioning

Обосновано новое решение актуальной научной проблемы создания              нормативных условий труда на робочих местах в замкнутых производственных  пространствах, в частности, в горных выработках глубоких шахт, по факторам запыленности воздуха и температуры. На основе развития теории   гидродинамического очищения воздуха от пыли и  охлаждения его водой, обоснованы функциональные, параметрические и конструктивные   особенности  кондиционера в виде многокамерного водного эжектора.  Впервые определены условия и параметры для создания импульсно-волнового процесса очищения и охлаждения воздуха в многокамерном эжекторе, позволяющем создавать смесь из воздуха и капель воды, что повышает эффективность улавливания пыли и охлаждения воздуха. Получены    закономерности,  позволяющие разработать модуль кондиционера, на  основе которого могут быть созданы  установки различной  производительности.Ключевые слова: охрана труда,  пыль, воздух, вода, очищение,  охлаждение.It is proved the new solution actual scientific problem of creating a regulatory working condition in confined spaces of production, in particular in the workings of deep mines, according to the factors of air purity and temperature. On the basis of the theory of the hydrodynamic air purification from dust and cool it with water, proved functional, parametric design features and air conditioning unit in a                  multi-chamber of the ejector. For the first time defined the conditions and parameters for creating a pulse-wave process of purification and cooling for multi-ejector-based, allowing  creating the foam from the air and water, which improves the efficiency of dust   removal and cooling. On the basis of the laws of design main unit air conditioner with multi-chamber steam ejector and refrigerant, this allows you to create blocks with the required performance.Keywords: safety, dust, air, water, purification, cooling