India 1TPH Calcium Carbonate Grinding Project

Design Scheme

Material: Calcium carbonate

Input Size: 300-360mm

Output Size: 5-10μm

Capacity: 1TPH

Equipment: Full set of XZM221 Ultrafine Mill

Project Background

A mining company in India intended to produce calcium carbonate powder with fineness of 5-10 micron. Required capacity was 1.0 ton per hour. They had a Raymond mill which cannot meet their desired fineness. The feeding size of the raw stone is 300-360mm. They had a primary 16"×10" jaw crusher. Based on customer’s situation, we recommended full set of XZM221 Ultrafine mill for their requirement. The mill was installed in 2009 and is running perfectly in India now.

Production Process

Raw material of 300-360mm is primarily crushed by the jaw crusher down to 50mm and then enters our hammer crusher PC400×300. After secondary crushing, it would be less than 10mm, and discharged to bucket elevator. The elevator sends the material to storage hopper where there’s a vibrating feeder under the hopper. The feeder feeds material to main unit of XZM221 mill evenly and continuously. When the material is being ground in the mill, the blower blows the powder to classifier, and the classifier impeller rotates at adjustable speed which is controlled by control cabinet. According to client’s requirement, powder less than 10 micron will be separated by classifier, and bigger powder falls down, being reground over and over again. 10micron and less than 10micron powder then goes to the cyclone collector with the air from blower and be collected in the cyclone collector. Powder will be discharged from the discharge valve to become the final products. The bag filter will clean the outgoing air to protect the environment.

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