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Deposit exploitation, including engineering and production of mining engineering, the two major items of infrastructure to open up. Underground mining to open up to be boring a series of roadway or channel accessible ore bodies, the completion of mining production, delivery, production and use.
Exploitation of the production process, including:
(1) quasi, cutting, preparing to produce conditions for recovery.
(2) The mining, ore caving broken into the transport container. Underground mining, including off the mine, the mining operations (underground mining methods); open stoping, including perforation, blasting and mining loaded operation (see the open pit mining methods).
(3) transportation, shipping container loads of ore delivered to the concentrator or ore bin (see mine hoist, mine transportation, open-pit transport).
(4) management tunnel pressure, pressure vertical shaft to the mining site pressure and open-pit slope.
(5) In the process of ore transport, ore bin, stack the ore mix to ensure the stability of the production quality of the ore.
(6) roadway excavation and stripping of output waste rock the abandoned waste rock field.
Feeder iron ore crushing process in general, the initial crushing, secondary crushing, screening, crushing, dry separation of these several processes, for economic reasons, usually into the dry sorter ore finer granularity. containing iron ore was dry elected the higher the proportion. Small concentrator directly to the fine jaw broken broken iron ore Dry operation, resulting in a very serious waste of natural resources.
Therefore, the selection of the most economical mode of production, the maximum rate of iron ore Dry increase, iron ore beneficiation unit must face and research topics. A large number of individual domestic beneficiation unit using the traditional hammer to break, this is an investment in the lowest-cost mode of production, not only the production efficiency is low, but also caused a great waste of natural resources.