Many developing mineral-rich countries have experienced strong growth for a decade or longer, propelled by a rapid expansion of their mineral exports and a rise in prices of these commodities. This sustained strong economic performance goes against the accepted wisdom that even though the mining sector, like other extractive industries, can generate foreign exchange and fiscal revenues, it contributes little to sustained economic growth and human development. The overall impact of the mining sector was much stronger if there were infrastructure benefits and strong linkages to other industries, especially through domestic procurement. Cooperation between the public and private sectors seemed essential to increasing such linkages.
Forecasts of the world and Russian coking and steam coal exports for the period of up to 2035. Models of foreign origin for the implementation of government support measures for exports. Propositions on the state backing of Russian coal exporters
The article presents the forecasts of the world and Russian exports of coking and steam coal for the period of up to 2035. The authors discuss models of foreign origin for the implementation of systems of exported products support in the world leading coal supplier and consumer countries. The description is given of the Russian national system of exported products support.
The invention is a device intended for the replacement of lining in drum mills operated in mining, construction, metal and some other industries. The proposed universal hydraulic manipulator for relining of drum mills is mounted with a help of an overhead crane inside a mill via the access hatch and secured with regular bolts to its outer flange. Due to the available adapter mounting flanges suitable for various mill sizes this manipulator is a universal device. The invention is aimed at the minimization of mill downtime for repair with relining.
Drilling tool operation with high compressed air pressure. Case study of drilling tools operation manufactured by MachineWBuilding Holding AO
Geological conditions of different ore mines are rather diverse, in many of them rock have such characteristics that the volume of compressed air supplied from a compressor in the process of drilling is not sufficient for intensive borehole clean-up. For instance, the presence of water with some minerals makes rock viscous and strong.
Availability and relatively low prices of natural gas in Russia in the context of continuously changing diesel motor fuel supply and demand situation, as well as ever growing competition in the world mineral markets, where the Russian products have an important share, lay the greatest emphasis on the task of mine road transport accelerated transition to gas fuel. Natural gas makes steady progress in becoming a promising motor fuel not only for light commercial and general purpose vehicles, but also for mine machinery and equipment, such as, dump trucks, dozers, excavators, crushers, etc.
Application of the modern strainWgauging technique for the research and development of mining and construction machinery
The authors propose to use intelligent digital sensors for the estimation of mining machinery parts and units loading in actual operation environment. Sensor setting zones are identified in accordance with the proposed methods and procedures for experimental studies. Based on the generated data it is possible to estimate the effect of control modes on the loading rate and conditions for excavator steel structures.
Classification of coal winning process flowsheets with automated processes based on mechanical action machinery
One of the development areas of technologies and mechanization facilities for mining of flat medium thickness seams without permanent presence of the personnel in a coal face is the creation of multi-point attach coal-face systems. The article presents the classification, which shows a great variety of the available options of cutting tools, roof support structures and transport facilities.
Grounding the principles of fewWoperation technologies for the application of hydraulic jet systems in coal faces
The existing process flowsheets for hydraulic mining are based on the application of machinery for hydraulic, mechanical-hydraulic and combined mining.