With the large number of small coal mines, small cement enterprises were closed, a new large-scale concentrator, after another large coal preparation plant and large-scale cement plant construction, mining equipment which put forward higher requirements, the urgent need to handle large capacity, efficiency separators , reliable operation of energy saving energy saving ball mill. As users increase the demand for products, new problems have emerged, the facility often blocking material phenomenon, through the analysis by the inadequacy of the screening area, the main ball mill pulverized material is limestone, and before entering the mill there are in addition to iron device to ensure the purity of the material entering the mill, so to block the gap, the product has improved after the closure, but still can not meet the size requirements of the user.
In addition, the energy saving ball mill drive transmission has three ways: First, the asynchronous motor gear reducer drive, this approach is suitable for large and medium-sized ball mill using asynchronous motor drive. Secondly, asynchronous electric car V-belt drives are generally small ball mill using this transmission mode. Another is the synchronous motor drive, the large ball mill using low-speed synchronous motor direct drive ball mill pinion, pinion ball mill and then drive the ring gear to rotate. The advantage is the high transmission efficiency, small footprint, easy maintenance, and improve the power factor, but the high price of the synchronous motor, and a DC power supply required.
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