The Continuous Improvement about Hongxing Ball Mill
29 May, 2013 at 1:48 am in Featured
A ball mill uses centrifugal force and many metal balls to grind substances into a fine powder. It is a vital tool for regrinding work and is used mainly on materials such as cement, glass and chemical fertilizer. Its primary design is a large horizontal metal cylinder with two warehouses, or compartments, containing metal balls and scale-boarded, or grooved, edges. The cylinder is then rotated to create centrifugal force to lift the balls and drop them on the material, grinding them. The first warehouse is made to start the grinding process and when the material is made fine enough, it enters through specified holes into the second warehouse, which – with different specification balls and scale boards – grinds the material into a finer powder.
Ball Mills accept feed that range in size from 80% passing 20mm to fine feeds in regrind operations. Products may be as coarse as 0.5mm or as fine as 80% of 40 microns. In a ball mill the length may be less than, equal to, or greater than its diameter. A short length mill has a lower retention time and produces a coarser product. Longer mills have a longer retention practice and generally utilize closed circuit operation. Most Ball Mills operate with a reduction ration of 1:20 to 1:200.
For the grinding efficiency of the ball mill and the simulation and optimization for the representation model between the parameters of the mechanism o f the milling machine, the simplified three-dimensional modeling of the mechanism of the milling machine is mainly composed by the large pulley, bearings, connecting rods, rocker and the tray. The grinding tube is fixed on the tray. The eccentric distance between the bearing and the pulley is 60mm. The initial length of the link is 180mm and the initial length of the rocking bar is 120mm. The length of the hinged four-bar mechanism frame is 200mm.