how to grinding process the dolomite powder?
2015-09-17
The whole set of dolomite processing line:
Including main unit of grinding mills, classifier, powder collector, dust cleaner, blower, muffler, sound-proof room, crusher, bucket elevator, storage hopper, vibrating feeder, and so on.
Full set of dolomite production line has low noise, high material, good fineness, less environmental pollution. Fineness of products can be adjusted between the 300meshs-3000meshs and the fineness of product once can be reached D97≤5um.
There are three steps of dolomite processing:
1) Crush: if your materials are large dolomite ores, you should crush it to small particles which size smaller than 20 mm. if your materials are can crushed dolomite particles, you can pulverize the dolomite particles directly.
2) Pulverize: After crushed by crushers, the large materials become small ones and are sent to storage hopper by elevator, edge of then evenly sent to the upper distribution plate of the turnplate by vibrating feeder and sloping feeding pipe. When the grinding mill is at work, all the grinding rollers are rolling in the ring, and the materials are driven to the edge of the turnplate by the centrifugal force and fall down into the grinding chambers where the materials are repeatedly pressed, crushed and grinded by the rollers.
3) Classify: The high-pressure air blower constantly inhales air within the grinding mill and, in turn, the air flow with crushed materials are brought to the classifier whose high-speed impeller will screen the airflow: the unqualified particle size will fall and return to the mill for being reground while the qualified particle size mixed with air will go into the cyclone powder collector. Most of the qualified powders will fall an exit from the discharging valve at the bottom; a small proportion of the fine powders, with airflow, moves to the dust cleaner, and clings to the surface of the filter bags. At the same time, the fine powders clinging to the surface fall down by the sudden vibration of the filter bags, which is caused by the instantly ejected high-pressure gas controlled by the pulse valve. The materials from the above two lots are sent by the conveyor at the bottom to get finished powders packed. In addition, filtered clean air will be emitted from the air outlet of muffler in the end.