Перегляд Mining of Mineral Deposits по назві
Зараз показуються 301-320 з 354
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Study of protective properties of half-masks respirators used by miners
(National Mining University, 2016-12-30)Purpose. To define coefficient of protection of filtering respirators with elastomeric half-masks PR-7 in conditions of coal mines. Methods. Antidust respirators applied at mining enterprises of Ukraine were tested for ... -
Study of the plasma flow interaction with the borehole surface in the process of its thermal reaming
(National Mining University, 2018-09-30)Purpose. Study of the plasma flow interaction with the borehole surface in the process of its thermal reaming for determination of transient temperature distribution along the borehole surface and the average coefficient ... -
Study of the process of coal transfer by means of auger effector within the aggregate of boiling bed
(National Mining University, 2017-12-30)Purpose. The development and analysis of operation of a boiling bed aggregate with auger effector to feed and transfer coal inside a working chamber in the process of its thermal destruction. Methods. Method of graph ... -
Study on low-grade galena-barite ore beneficiation in Khuzdar, Balochistan, Pakistan
(National Mining University, 2019-03-30)Purpose. Galena and barite are the principal minerals of lead and barium respectively. Both minerals are used extensively in industries because of their distinct properties. In complex poly metallic ores, it is always ... -
Studying a correlation between characteristics of rock and their conditions
(National Mining University, 2020-09-30)Purpose is to determine dependences of velocities of elastic waves in isotropic rocks and anisotropic waves with orthotropic and transverse-isotropic symmetry upon pressure and depth to develop evaluation criteria and ... -
Studying a crack initiation in terms of elastic oscillations in stress strain rock mass
(National Mining University, 2016-06-30)Purpose. Deriving the criterion of a crack (joint) initiating under simultaneous effect of the rock stress state and elastic oscillations generated by an external source is the research purpose. Determining the quantitative ... -
Studying the heavy metals concentration in discharged water from the Trepça Mine and flotation, Kosovo
(National Mining University, 2020-12-30)Purpose. The purpose of this study is to assess the concentration of heavy metals in industrial discharge water from the Trepça Mine in Stantërg and flotation, and their impact in polluting the urban environment. Methods. ... -
Studying the influence of the carbon dioxide injection period duration on the gas recovery factor during the gas condensate fields development under water drive
(Dnipro University of Technology, 2021-06-30)Purpose. Studying the process of carbon dioxide injection at the boundary of the initial gas-water contact in order to slow down the formation water inflow into producing reservoirs and increase the final hydrocarbon ... -
Substantiating parameters of stratification cavities formation in the roof rocks during underground coal gasification
(National Mining University, 2016-03-30)Purpose. Underground coal gasification, as a complex and technically difficult process, should be supported in many aspects by computer simulations or analytical calculations of rock mass behavior. However, little is known ... -
Substantiating velocity of amber buoying to the surface of sludge-like rock mass
(National Mining University, 2020-12-30)Purpose is to substantiate the parameters and factors in terms of which amber can be mined efficiently from sand deposits using hydromechanical method. Methods. Laboratory studies and full-scale experiments of amber-bearing ... -
Substantiation and process design to manufacture polymer-concrete transfer cases for mining machines
(National Mining University, 2020-06-30)Purpose. To determine efficient polymer-concrete composition and to develop a process design to use the material to manufacture transfer cases for mining machines operating under very heavy conditions to improve their ... -
Substantiation of cable bolts parameters for supporting mine workings in conditions of laminated rocks
(National Mining University, 2016-03-30)Purpose. The development of approaches to the substantiation of the cable bolts installation parameters for the mine workings supporting in conditions of laminated rocks, taking into account the geometric parameters of the ... -
Substantiation of refractory lining influence on the electric furnace efficiency for the production of ferronickel
(Dnipro University of Technology, 2021-09-30)Purpose. The purpose of the research is to substantiate the possibility of replacing existing MgO bricks with the MgO-C bricks due to their resistance to the slag aggressiveness of the electric furnace and the Si content ... -
Substantiation of resource-saving technology when mining the deposits for the production of crushed-stone products
(Dnipro University of Technology, 2021-12-30)Purpose. Scientific substantiation of the expedient depth of mining the non-metallic deposits of rocky minerals on the basis of mathematical and statistical methods, which will ensure resource-saving and rational use of ... -
Substantiation of the intensified dump reclamation in the process of field development
(National Mining University, 2020-06-30)Purpose is to substantiate intensification of dozer dump reclamation in the process of open pit-mining. Methods. Analysis of methods intended to intensify reclamation activities in the context of open-pit mineral extraction ... -
Substantiation of the method for constructing the diagram of the horizontal belt conveyor tightness
(National Mining University, 2017-09-30)Purpose. The method for constructing the diagram of the conveyor belt tightness, which satisfies the fundamental conditions of the mechanical system equilibrium and takes into account the influence of its centrifugal forces ... -
Substantiation of the methodology for modeling and calculating the optimal operating modes of a tandem pumping installation when mining uranium
(National Mining University, 2020-12-30)Purpose. The purpose of the research is to develop a mathematical model of the jet pump (JP) working process and a calculation methodology for modeling, as well as to determine the optimal operating modes of a combined ... -
Surface mines composite slope deformation mechanisms and stress distribution
(National Mining University, 2020-12-30)Methods. Description and interpretations of the mechanical and stress computational model for a waste dump loading in the formation of a composite slope on the basis of the theory of plasticity and elasticity. Numerical ... -
Survey of the world practice of implementing energy-efficient technologies in terms of mining enterprises
(National Mining University, 2019-12-30)Purpose is the analysis of world practice of applying the best available techniques to increase energy saving and energy efficiency of mining enterprises being the important factor of the economic development. Methods. ... -
Sustainable development of Ukrainian iron and steel industry enterprises in regards to the bulk manufacturing waste recycling efficiency improvement
(National Mining University, 2018-03-30)Purpose. Identify the tendency of sustainable development of Ukrainian iron and steel industry enterprises regarding the raising of the bulk manufacturing waste recycling efficiency. Methods. To achieve this purpose, a ...