Fine Crushing, Coarse Grinding Machine-Rod Mill Used for 4-35 mesh stone and sand

Fine Crushing, Coarse Grinding Machine-Rod Mill Used for 4-35 mesh stone and sand

1-Rod mill is usually selected in order to prevent over grinding in gravity or magnetic separation plant of tungsten tin and other rare metals mine

2-In two stages grinding, the capacity of rod mill used in the first stage grinding is larger than ball mill’s

3-In some cases, rod mill can replace short head cone crusher

The rod mill is generally wet overflow type used in the first stage grinding, especially in artificial sand and stone, mineral processing plant and power sector of chemical plant.

Difference of Rod mill and Ball mill

Rod mills are very similar to ball mills, except they use long rods for grinding media. The rods grind the ore by tumbling within the the mill, similar to the grinding balls in a ball mill. To prevent the conditions leading to rod charge tangling, the length to diameter ratio is maintained at 1.4 to 1.6. Rod mills accept feed up to about 50 mm (2 in.) and produce a product in the size range of 3000 to 270 mm (4 to 35 mesh). Grinding action is by line contact between the rods extending the length of the mill. Rods tumble and spin in roughly parallel alignment simulating a series of roll crushers. This results in preferential grinding of coarse material and minimizes production of slimes.

  The rod mill is driven by motor with speed reducer and peripheral large gear, or low speed synchronous motor with peripheral large gear. The grinding medium --- steel rod is put into the cylinder which is lifted, and then fall under the action of the centrifugal force and friction force. The materials entering into cylinder form the feeding inlet are grinded by movable grinding medium and discharged out by overflow and continuously feeding.

Approved by the National Commerce Ministry, established in 2006, located in Zhengzhou city, Henan province, covering area about 300,000 square meters, with more than 260 employees which including R&D staffs more than 50 people, Henan Dewo is a comprehensive enterprise which integrates researching, manufacturing, market developing and service for mining crushing equipment, infrastructure equipment, ore beneficiation equipment and mining drying equipment.

Fine Crushing, Coarse Grinding Machine-Rod Mill Used for 4-35 mesh stone and sand