They are used in the fabrication of optical instruments, radios, chemical devices, etc. Quartz sands are used in mortars, concrete mixtures, glass fabrication and for hydraulic fracturing. Silica sands and quartzite are applied in the Building Industry, to make high quality plasters and commercial microwaves.
After having been crushed and ground, it is used to obtain ferromanganese, preparation of mold flasks, refractory ceramics, glass industry, sandpaper fabrication, rasp for matches, abrasive powders, fine filters, etc.
It is also a main component of the Ceramic Industry formularizations, in porcelanic stoneware as well as in frits, engobes and colorants.
To grind and classify these materials, ANIVI offers Grinding and Classification Plants based on the experience obtained along the years. These plants are composed of a Ball Mill which will be provided with alumina or silex linings and grinding media also of alumina or pebble, a Dynamic Classifier which is engaged in obtaining the wished product fineness at every moment. Fineness changes are performed from the control panel without the need of stopping the plant. A dust collecting equipment by means of a Filter keeps the working environment free from pollution.
Normally ANIVI Plants obtain particle sizes of 98% < 45 microns, being possible to reach different finenesses.
ANIVI can also offer dryers when process requirements make a drying prior to grinding necessary.