The ball mill comprises of series of grinding balls charged into a cylindrical tube, . power consumption, wear rate of grinding media and product quality. . are special steel balls of high strength charged into both first and second chamber of the . by optimum mill speed, angle of repose and ball size distribution, grinding ball.
The double chamber classifying grinding of ball mill The double chamber classifying grinding of ball mill. In the past practice of grinding technology, in the equipment making, people often only consider whether the … Hamilton Beach 80365, 80370 Grinder Replacement Grinding Chamber
Keywords: Ball mills, grinding circuit, process control. I. Introduction Grinding in ball mills is an important technological process applied to reduce the size of particles which may have different nature and a wide diversity of physical, mechanical and chemical characteristics. Typical examples are the various ores, minerals, limestone, etc.
The mills where conventional separators are used, a little finer grinding is suggested due to shorter classifying zone available. While analyzing both the axial graphs for finer grinding (second compartment) performance this is found cement residue at mill discharge is complying the range as marked and very satisfactory.
In the second chamber the ball diameters are of smaller diameter, between 60 and 15 mm. In this chamber the lining is typically a ‘classifying lining’ which sorts the media so that ball size reduces towards the discharge end of the mill. Here, comminution takes place in the rolling point-contact zone between each charge ball.
I chamber liners II chamber liners Stepped classifying Mill size 4.6 x 16.5 m L/D ratio Mill drive 3.58 5000 kW Diaphragm Double blind plate Mill speed 15.2 rpm GM in I chamber 107 t Critical speed 76 % GM in II chamber 217 t Separator Sepax 450M-222 Separator Cyclone 4 nos. Separator motor 300 kW