What makes these minerals so special? Use and main characteristics.
see more about minerals here http://diamondabrasives.eu/category/about-minerals/
Abrasive minerals are crucial for the industry and even the performance of purely domestic tasks. The diversity of these tasks reflects in their diversity in form and composition.
The abrasive minerals are used mainly for imparting into desired shape, smoothing of various materials and products. This is done by means of friction / friction thereby emit unnecessary amount of material to achieve the desired shape and position of the work piece.
To be able to function as abrasive mineral should be harder than the material being processed /see the Mohs scale/. Usually these are natural minerals with a hardness of 7 on the scale or artificial materials that are perfect replicas of their natural originals. Typical example is diamond polishers, the hardest of minerals, that is used in the natural and the synthetic form. Another synthetically produced super hard abrasive mineral is Corundum, which nowadays is made from bauxite.
Even much more soft minerals can help people in everyday life. Calcium carbonates, for example, a part of the dental toothpaste.
Most often, the abrasive minerals are used for:
Abrasive work in close contact with the material being processed. The higher is the difference in hardness, the faster the process proceeds /see Mohs Scale of Hardness/ . The speed of the treatment depends on the size of the crystals in the abrasive, and from the intense of the pressure.
Finishing and polishing is a delicate job that polishes the surface of the workpiece to the desired condition whether it is completely smooth or specific – matte, pearly or other.
See here more information about Content and types of mineral abrasives. Useful links included.