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为解决金属矿山二次破碎问题,我们进行了电力破矿的研究。采用11种不同频率的电源装置,对29个矿山的726块矿岩大块(块度0.9～2.1米,多数为1米)进行的破碎试验表明:电力破矿设备具有工作方式合理,能量转换方便,效率高,工作安全(无冲击波、飞石、噪音、粉尘),能源广泛且传输方便,成本低廉等一系列特点;各类设备对各类矿石的适应性也不相同;坚硬致密、热应力显著的鞍山式铁矿床的主要矿石,用电力破矿的技术经济效果优越;
In order to solve the problem of secondary crushing in metal mines, we conducted a study on electric power mining. Using 11 kinds of power devices with different frequencies, the crushing tests of 726 large ore blocks (0.9 ~ 2.1 m in block size and 1 m in most) in 29 mines show that the power mining equipment has the advantages of reasonable working mode, energy conversion Convenient, high efficiency, safe work (no shock wave, flying stone, noise, dust), a wide range of energy and convenient transportation, low cost and a series of features; various types of equipment on the adaptability of different types of ore is not the same; hard and dense, hot Stressful main Anshan iron ore deposits, the use of electric power mining technology superior economic benefits;