Describes the structural characteristics of ball mill

Ball Mill in 1876 by the German Bruchncr invention, first used for grinding ore in the Meimu in 1905. In the metal ore dressing plant, ball mill for the minerals and gangue complete dissociation of the final stage.

Ball Mill ore dressing equipment belonging to the grinding equipment. Crushing Grinding is a follow-up operation, the stage production of fine-grained product, the purpose is still to make useful minerals and gangue minerals to achieve complete separation of monomer.
Among them, overflow-type ball mill and lattice-type ball mill is currently the most common use of two kinds of ball mill, their main components are: for mine equipment, hollow journal, cover, Simplified, linings, transmission devices. Their working principle is the friction, centrifugal force, under the action of grinding media (ball) to a certain line speed Paola, relying on impact, the additional role of crushing grinding mill to be crushed ore, and build on the momentum of the material out of water .
Yi flow pattern when the ball mill for fine grinding mill is better than the lattice model. The disadvantage is that the pulp in the mill will stay longer inside the unit capacity of the lower row of ore particle size uneven, prone to the phenomenon had broken bits.
Lattice-type ball mill is characterized by face than the overflow of pulp mill-type low-loaded ball quantity, because of this mill has a row of mine for a mandatory month, accelerating the speed of discharge, it is not easy to be too crushing and grinding ore and productivity of mud high. Its disadvantage is that complex structure, heavy. It is with the overflow-type ball mill is the main difference between the end of a grid of discharge.
The main technical features of Ball Mill are: Medium: casting and forging steel ball, cone columns, short rod, diameter ?18 ~ 125 ... accounted for 30% of mill capacity to 50%; cylinder diameter range: O 9 ~ 6 5 m; aspect ratio : 0.5 ~ 3.5; easy to grind ore to the ore size <25 mm (80% passed), it is difficult grinding ore <6 mm (80% passed); Product Size: Open 28 ~ 345 mesh, closed-circuit to 400 mesh; broken than : 20:1 ~ 200:1; Power Range: 10 ~ 8000kw; Simplified working speed 18.3r/min; Motor Speed: 167rpm.
The current general trend ball mill accident was the introduction of new technologies and new wear-resistant materials, and continuously improve the equipment, a variety of technical performance. Such as the use of static and dynamic pressure bearing, high and low pressure lubricating oil stations, spray lubricating device, slow transmission devices, pneumatic clutch, PLC and touch screen and other new technologies.