The most complete knowledge of open-pit mining, عقد وظيفة
2022-10-26 02:56 خدمة مجالسة الأطفال Dubai 229 الآراء المرجعي: 2540تفاصيل الوظيفة
Original title: The most complete knowledge of open-pit mines has been collected by miners! Strip mining is the extraction of valuable minerals from open pits. Mechanical mining: mining hard ore andontal layers os of high drilling efficiency, low operation cost,dth rock bit, high degree of mechanization and automation, and is suitable for drilling operations of various hardness of ore and rock. At present, it has become a comally about 30-75 mm,dhd drill bit, and the depth of the hole is generally less than 5 meters, sometimes up to about 8 meters. If the drilling jumbo is used for drilling, the depth of the hole can be increased. Shallow-hole blast is mainly the production blasting of bench. Drilling equipment for deep-hole blasting mainlysting: The blasting quantity at one time is large, the blasting times and the blasting avoidance time are reduced, and the utilization rate of the stope equipment is improved The broken quality of ore and rock is improved, Mining Drilling Equipment ,down the hole bit, and the large block rate is reduced by 40% -50% compared with the single-row hole blasting. The efficiency of perforating equipment is increased by about 10% -15%, wner cannot be contacted. If there is infringement in the text and pictures of the article,DHD Drill bit, please contact the public number operator, WeChat ID: zjks2016, and we will delete it! Return to Sohu to see more Responsible Editor:. wt-dthtools.com
