Applicable conditions of the room and pillar method
(2) When the thickness of the ore body is relatively thin (<3 to 4 meters), of roof rock is solid, and the ore body is interposed in the partial lean ore or waste rock, full application method is more suitable.
(3) When the thickness of the ore body is <8-10 m, the room-column mining method of shallow hole retention and electric slag mining can be adopted.
(4) When the thickness of the ore body is large, the room-column mining method of deep-hole thin ore and trackless equipment can be used.
(Example: Pace Vegas Canada copper ore, ore average thickness of 33.5 m, open-air type trackless own equipment, ramp down the collapse trackless apparatus ore with 1.1 to 1.9 m3 shovel loading 18 tons, or 30 tons The truck was transported to the main slipper).
(5) in the room and pillar mining is mainly used to mine the metal deposition type iron deposit and copper, lead, zinc, bauxite, mercury and other nonferrous metals and rare metals and uranium deposits. It is also one of the main methods of mining. It is also used to mine non-metallic mineral raw materials and building materials such as rock salt, potassium and limestone .
Hydraulic Brake Control System:
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Hydraulic station with frequency conversionn is a new development product that applies to supper-huge hoist, and wildly used in Kailua
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Luoyang Hong Xin Heavy Co., LTD. is located in Luoyang Xin'an Industrial Park, Luoyang Hongxin Heavy Machinery Co., Ltd is an enterprise featured with industrial designing, processing and manufacturing, which is qualified for import-export trade. Covering an area of 15,000 square meters and holding an annual production value of 80 million RMB, the company of 20 million RMB registered capital has total 100 staff members, among which there are 20 engineering technicians owning senior and medium professional titles and 40 intermediate and senior technicians capable of product designing and developing.
Hongxin is dedicated to produce reducers, hoists, crushers, Ball Grinding Mills and the equipments of screening, coal washing, metallurgy and cement, and replacement parts. Meanwhile, we provide the perform maintenance service for various series of equipments. There are 52 large-scale equipments applied into the manufacturing process, such as T200 CNC floor boring and milling machine, YK 73125 CNC molding gear grinding machine, YK322B CNC molding gear grinding machine, Y3200 gear hobbing machine, Y1600 CNC gear sharper, 4m vertical lathe, 6.3m CNC vertical lathe, T110 CNC boring machine, and 52 middle-sized productive and assistive equipments, which integrate strong manufacturing and processing capability with complete managing system of production and technology, quality management system and comprehensive testing measures
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Hydraulic Brake Control System
Hydraulic Brake Control System,Hydraulic Bending Brake Control System,Press Brake Brake Control System,Hydraulic CNC Brake Control System
Luoyang Hongxin Heavy Machinery CO., TLD. , https://www.hxreducer.com