It is one of the most widely used industrial minerals. It can appear like limestone, calcite or marble. It is an universal filler for the Paper, Plastic, Paint, Rubber and Cosmetics Industries. These applications require ultrafine grinding. It is also used as a compound in the construction materials such as mortars, in this case so small finenesses are not required.
For ultrafine applications ANIVI proposes the use of Ball Mills, which will normally be steel or rubber lined and steel grinding media. Product goes from the Mill to a Classifier with air circuit, which lets control the particle size without the need of stopping the plant. The whole plant can be in closed or open circuit, which basically includes: Ball Mill, High Efficiency Classifier, Cyclon, Fan and Bag Filter. With our plants we can obtain a wide range of particle sizes, but for this particular product, the most usual cuts are from 5 to 15 microns.
In those cases which do not require so fine particle sizes, we use Roller Mill technology, ideal for semihard and non abrasive minerals. Mill is provided with a High Efficiency Dynamic Classifier by which we can change the particle size without stopping the plant and from the control panel. These plants are designed to let add a simultaneous drying, in those cases when the product moisture content so requires it, making in this way the production costs sensibly lower.
With our equipment we can obtain a wide range of particle sizes, and for this particular case the most usual ones are from 35 to 200 microns.
New designs allow ANIVI to offer lower cuts than 5 microns, and average particles under 2 microns, making an important improvement in the material features.