The garnet group includes a group of minerals that have been used since the Bronze Age as gemstones and abrasives. The name "garnet" may come from either the Middle English word gernet meaning 'dark red', or the Latin granatus ("grain"), possibly a reference to the Punica granatum ("pomegranate"), a plant with red seeds similar in shape, size, and color to some garnet crystals.
Because the chemical composition of garnet varies, the atomic bonds in some species are stronger than in others. As a result, this mineral group shows a range of hardness on the Mohs scale of about 6.5 to 7.5. The harder species, like almandine, are often used for abrasive purposes.
Garnet is ground to a variety of sizes to be used as an abrasive. Garnet sandpaper was the original application of this mineral. It is also used to make a number of similar products, including sanding belts, discs, and strips. Today, the vast majority of garnet is used as an abrasive blasting material, for water filtration, in a process called water jet cutting, and to make abrasive powders.
Only iron garnet, almandine and to a lesser extent, glosularite are used in the manufacture of abrasive like coated garnet paper and cloth and discs glued with sodium silicate. The common bonding materials used for the manufacture of discs are magnesium oxide and magnesium chloride. Garnet is crushed, sieved and graded into various sizes and thus coated abrasives of various fineness are prepared. Garnet abrasives are used mostly for wood polishing. Finer grains of micron sizes are used as tumbling chemicals, grits for optical glass polishing and also ceramics and glasses. In modern practice, broken garnet pieces are preheated to a temperature varying from 700° to 1000°C before crushing to various grain sizes. It is reported that the toughness, fracture and colour of the garnet is improved on heating and quenching.
Garnet crusher is manufactured by SBM applied for crushing garnet ore. As the garnet’s application in industry you should use our garnet crusher and garnet grinding mill. When you get the primary stone of garnet, it is always in different types of big block, so the garnet need to be crushed sieved and graded into various sizes and thus coated abrasives of various fineness are prepared. In the process you may be use the garnet jaw crusher, garnet impact crusher, garnet cone crusher, vsi garnet crusher, mobile garnet crusher, trapezium garnet grinding mill, garnet ultrafine grinding mill, garnet ball mill grinder etc.
