Case Study
Stack Sizers Improve Classification Efficiency, Lower Energy Cost in Second-Stage Grinding Circuit
Case Study | 218 Stack Sizers Improve Classification Efficiency, Lower Energy Cost in Second-Stage Grinding Circuit Background The iron ore mine operated by OJSC KMAruda in Russia produces ore containing 34 percent total iron. Processing is performed by four identical-size mills. The primary grinding circuit on each line consists of two ball mills in parallel, operating in closed circuit with spiral classifiers. The second- stage circ