JM series stirred ball mill is a kind of high efficiency ultrafine ore grinding equipment also called tower mill or vertical spiral stirred ball mill mainly adopted for the ultrafine grinding test research also for the small scale industry grinding production to provide reliable technical parameters for industrial production.
Investigations were conducted on whether the greater performance of stirred mills over ball mills in fine grinding can be extended to coarse grinding appli ions. Four different laboratory ball mills and stirred mills have been tested to grind seven ore samples with feed sizes ranging from 3.35 mm to 150 μm.
classifi ion. With the grinding media evenly distributed the ore particles remain in constant contact significantly increasing grinding efficiency. Unlike tumbling mills where comminution occurs from both impact and attrition grinding in stirred media mills the particles suffer almost entirely attrition breakage between the beads.
Different kind of mills are suitable for grinding mechanical alloying and mechanical milling such as horizontal mills tumbler ball mill stirred mill attritor e.g. Szegvari attrition mill 1 planetary ball mill vibrating mill tube vibrating mill Sweco vibrating mill and shaker vibrating mill e.g. Spex is a lab-scale mill 3 .
Ideal for grinding finer products stirred mills are known for their energy efficiency and compact design reducing floor space requirements. These mills are based on gravity-induced and fluidized technologies allowing for the optimum equipment solution for all comminution circuits covering secondary tertiary fine ultrafine regrind and lime slaking appli ions.
Xiao et al. investigated the iron grade and recovery of fine grained magnetite ground by a stirred mill and ball mill. They found that the stirred mill was more beneficial for grinding P80 10–30 μm minerals to liberate more valuable minerals and the grade of iron concentrate was 5.2% higher than that of ball mill.
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In this study a stirred mill manufactured by Jilin Exploration Machinery Factory in China as well as the ball mill and rod mill manufactured by Wuhan Exploration Machinery Factory in China were evaluated comparatively for their performance in mineral liberation and graphite flake protection during the grinding and re-grinding processes .
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The laboratory stirred mill used is presented in Fig. 2. The stirred mill is equipped with a special stirrer which consists of five rings distributed along a central shaft. The laboratory-scale stirred mill characteristics and the experimental parameters employed in the batch grinding test are outlined in Table 2. Ceramic ball of 4 mm in ...