#### Major Mines & Projects Copper Mountain Expansion Project

The ball mills are also dual pinion with identical variable frequency drive and motor installations the same as the SAG mill MW 45 kt/d Expansion This expansion will install a third ball mill installed in parallel with the two existing ball mills allowing for a throughput increase from 40 kt/d to 45 kt/d and at the same time . Ball Mills Retsch PDF Catalogs Technical The widest ball mills in RETSCH s comprehensive range of ball mills comprises High Energy Ball Mills Planetary Ball Mills and Mixer Mills Whereas the Mixer Mills are used for dry/wet/cryogenic grinding and homogenizing small sample volumes the Planetary Ball Mills . Optimization of mill performance by usinggrinding media wear rates throughput power draw and product grind size from the circuit Each of these performance parameters peaks at different filling values In order to contin uously optimize mill operation it is vital to obtain regular measurements of the ball load and pulp position The current way to measure the charge filling degree Crash stops and grind out Generally crash stops . On Line Sensors for measuring the total Ball and charge mill throughput power draw and product size The common method of measuring volumetric filling is by taking in situ measurements when the mill is stationary This method is disruptive to production due to the mill downtime involved The use of on line sensors for measuring the volumetric filling using acoustic inductive proximity and conductive sensors are the new technologies attempting to