What is vibration mining?
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When vibrating and releasing ore, the ore is released by a combination of the gravitational field and the vibrating field, and a smooth continuous ore stream is released. The vibration wave can improve the fluidity of the ore, the adhesion of the ore becomes smaller, the ore angle of the ore is 5°~10° smaller than that of the gravity ore , and the effective range of an ore roadway is expanded by about 60% . The effective working height of the ore roadway through the ore is expanded by 1~2 times, and the passing coefficient of smooth ore discharge is changed from 3 to 5 times of gravity ore to 2 or less. Therefore, due to the reduction of the release of ore by large ore blockage, block ore arch and powder ore bonding, and accumulation of arches, the ore mining operation time is increased and the ore discharge efficiency is high.
The use of vibrating ore in the caving method can reduce the contact surface of the ore rock to a similar level, and the waste rock into the funnel appears later, and the proportion of pure ore released increases, thus reducing ore loss and depletion.
The vibrating miner is easy to manufacture and process, low in cost; easy to operate and maintain, easy for workers to master, normal ore mining, mining operations only press the button, reducing the labor intensity of workers, improving working conditions, and improving mine discharge operations Security. According to the information Wuhan Steel Corporation Jinshan shop Chengchao iron ore and iron ore, vibration drawing with pneumatic gate ore compared, it can save equipment investment, cavern excavation and energy, using a vibrating machine ore savings The investment is 22,800 yuan and 66,800 yuan, and the operating cost per ton of ore is 0.83 yuan.
Vibrating ore can adjust the dynamic parameters of each vibrating ore machine, work under reasonable working conditions, adapt to the physical and mechanical properties of the ore-bearing rock and the characteristics of the mining method, obtain the optimal working effect, and release the ore stream smoothly. It can be used according to good performance, accurate measurement and no mining. The amount of cleanup is small, and the possibility of running mine is small.
The disadvantages of vibrating ore are: The vibrating miner is a fixed device with poor flexibility and maneuverability; the conveying distance is small, and the investment is larger than that of the wooden funnel; the vibrating miner is applied in the sublevel caving method without column, recycling It is more difficult; when the clogging is used to treat the blockage, the vibrating miner may be damaged.
Because vibrating ore is superior to gravity ore, it is widely used not only in chutes and mines, but also in all types of mining methods, as long as there is a potential for gravity.