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The influence of rigidity of the collapsed roof rocks in the mined-out space on the state of the preparatory mine workings
(National Mining University, 2019-06-30)
Purpose. The substantiation of accounting the deformation-strength characteristics of the collapsed rocks and the rocks consolidating near the reusable preparatory mine working of the mined-out space to optimize the loading ...
Effect of blast induced rock fragmentation and muckpile angle on excavator performance in surface mines
(National Mining University, 2019-09-30)
Purpose. A fit excavator in a surface mine gives a trouble free production. To maintain the condition and safety of an excavator, proper sizes of rock fragmentation and muckpile parameters are crucial besides its maintenance. ...
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 ...
Geological features and marble production qualities of Western Turkey
(National Mining University, 2019-03-30)
Purpose. Isparta Angle occurs along the Mesozoic carbonate axis. Carbonated rocks forming the Taurus belt are continuous with allochthonous and autochthonous features. The rocks in the region are abnormally contacted with ...
Mineral resources and national economic security: current features
(National Mining University, 2019-03-30)
Purpose is to estimate current mineral and raw material complex and its effect on national economic security basing upon determination and analysis of the integrated index.
Methods. Eleven countries of the world with the ...
Regularities of hydromechanical amber extraction from sandy deposits
(National Mining University, 2019-03-30)
Purpose is to analyze the efficiency of hydromechanical amber extraction from sandy deposits relying upon the determined regularities concerning the effect of parameters while carrying out a series of laboratory tests and ...
Evaluation of some ceramic properties of Gadabiu clay deposit (Kwali Area Council, Abuja, Nigeria)
(National Mining University, 2019-03-30)
Purpose. To evaluate some ceramic properties of Gadabiu clay deposit, Kwali Area Council, Abuja Nigeria.
Methods. Soil samples from the study area were subjected to various physical and mechanical tests such as; X-ray ...
Investigation of the dust formation process when hoisting the uranium ores with a bucket
(National Mining University, 2019-09-30)
Purpose. Determining the possible level of air dustiness during the bucket hoisting of uranium ores along the shaft “Holovnyi” of the mine “Novokostiantynivska”, SE “VostGOK”.
Methods. To determine the level of air ...
Preliminary assessment of roadheaders efficiency based on empirical methods and index of equivalent rock strength
(National Mining University, 2019-09-30)
Purpose. The choice of a proper roadheader is a critically important step in planning of a project or some of its stages. Nowadays various manufacturers produce numerous models of these vehicles, hence it is unreasonable ...
Economic criteria for optimizing the number and load factor of mining transformers
(National Mining University, 2019-06-30)
Purpose. This article discusses how to choose the optimal number and load factor, respectively the economic power in the first year of mining power transformers operation. The analysis is carried out based on technical-economic ...