where is the quartz sand used Crusher Machine. noun 1. the dioxide form of silicon, SiO 2, occurring especially as quartz sand, flint, and agate: used usually in the form of its prepared white powder chiefly in .
It is therefore often used as a foundry sand. With a melting temperature higher than most metals it can be used for the molds and cores of common foundry work. Refractory brick are often made of quartz sand because of its high heat resistance. Quartz sand is also used as a flux in the smelting of metals.
The high hardness of quartz, seven on the Mohs Scale, makes it harder than most other natural substances. As such it is an excellent abrasive material. Quartz sands and finely ground silica sand are used for sand blasting, scouring cleansers, grinding media, and grit for sanding and sawing.
Sand is mostly quartz, formed by weathering of igneous rocks like granite. Quartz is ground down, but it doesn't break down chemically. After a while, all that's left are the tiny grains that are deposited in riverbeds and beaches.
The primary component of typical beach sand is quartz, or silica (SiO2). Quartz is a hard mineral which, not having any cleavage planes, does not fracture easily. Quartz is found in many types of rocks. Granites, shown below, are common plutonic rocks that have a high quartz content.