Rod Mill for Phosphate Grinding

The rod mill is another tumbling mill but having a large percentage of its volume (30 – 40%) loaded with steel rods. The rods are placed axially in the mill and are loose and free to move within the mill. The internal lining of the drum has a series of lifters which raise the rods and drop them at a predetermined point. The mineral is fed in at one end with a maximum size of about 25mm.

The rods crush the rock and as the charge passes through the mill it is reduced in size to approximately 2mm to 0.1mm. The mill can be fed from one end with the product removed from the other end or, alternatively, the mill can be fed from both ends with the discharge at the centre. The process can be wet or dry but is more commonly carried out wet. Maximum rod length is about 6 to 7 metres, otherwise there is a risk of the rods bowing.

Phosphate Processing Plant

southeastern Idaho deposits require crushing, grinding, and classification. Furtherprocessing may include filtration or drying, depending on the phosphoric acid plant requirements. Primary size reduction generally is accomplished by crushers and grinding mills. Some classification of the primary crushed rock may be necessary before secondary grinding (rod milling)takes place.

The ground material then passes through hydrocyclones that are oriented in a 3-stage countercurrent arrangement. Further processing in the form of chemical flotation may be required. Most of the processes are wet to facilitate material transport and to reduce dust.

Phosphate Grinding Mill

Nowadays, various types of grinding mills have been developed for certain applications. Of these grinding mills, some mills can grind different materials, but others could be only used for certain specific grinding requirements. SBM machinery is a global manufacturer and supplier of phosphate grinding plant, with long experience and high advance, we ensure all of our grinding equipment has high performance and create wealth for you in the production process.

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