GARNET SAND  

Garnet is pure and natural sand. Of the six major varieties of Garnet (Almandine, Andradite, Grossularite, Pyrope, Spessartite, Uvarovite), Almandine is the best abrasive Garnet with the composition of 3FeO, AI203, ESIO2. •Product Names : Garnet Abrasive •Other Name : Garnet Almandine •

Color : Reddish Pink •

Chemical Formula : 3FeO, AI203, 3SIO2

Industrial uses

Garnet sand is a good abrasive and a common replacement for silica sand in sand blasting. Alluvial garnet grains which are rounder are more suitable for such blasting treatments. Mixed with very high pressure water, garnet is used to cut steel and other materials in water Jet. For water jet cutting, garnet extracted from hard rock is suitable since it is more angular in form, therefore more efficient in cutting.

Garnet paper is favored by cabinetmakers for finishing bare wood

Garnet sand is also used for water filtration media.

As an abrasive garnet can be broadly divided in two categories; blasting grade and water jet grade. The garnet, as it is mined and collected, is crushed to finer grains; all pieces which are larger than 60 mesh (250 micrometers) are normally used for sand blasting. The pieces between 60 mesh (250 micrometers) and 200 mesh (74 micrometers) are normally used for water jet cutting. The remaining garnet pieces that are finer than 200 mesh (74 micrometers) are used for glass polishing and lapping. Regardless of the application, the larger grain sizes are used for faster work and the smaller ones are used for finer finishes.

There are different kinds of abrasive garnets which can be divided based on their origin. The largest source of abrasive garnet today is garnet-rich beach sand which is quite abundant on Indian coasts and the main producer today is India

This material is particularly popular due to its consistent supplies, huge quantities and clean material. The common problems with this material are the presence of ilmenite and chloride compounds. Since the material has been naturally crushed and ground on the beaches for past centuries, the material is normally available in fine sizes only. Most of the garnet at the beach in south India is 80 mesh, and ranges from 56 mesh to 100 mesh size