Sodium feldspar is used as a flux in ceramics manufacturing, especially for the production of porcelain stoneware, sanitary pottery and glazes. The ceramics and glass industry is the biggest user of albeit in its various production segments. The fast growth in this market over the last ten years is partially due to the great availability of mineral resources within the Indian territory and to Galaxy Group constancy in terms of product quality, quantity and diversity. Galaxy Group production meets a significant slice of sodium feldspar needs for tile production and supplies almost the entire Indian sanitary pottery industry. Outside of Indian important European ceramics groups traditionally use Galaxy sodium feldspar in order to guarantee the product quality demanded by international standards. Melting at a lower temperature than the other components in the mix, albeit lowers the overall fusion point. It attacks and brings into solution other components in vitrified products, with quantities depending on temperature and firing time.

 

 

A good deal of the final characteristics of the various ceramic products depends on the type and quality of the feldspar used. Depending on the percentage used, the firing process and the composition of the other components, albeit favors the solubilization of the raw materials creating a liquid phase around the solid particles.
albeit also finds application in glass production. Acting as a contributor of Al2O3 and Na2O, it reduces the need for other forms of natron and alumina.

 

Chlorite albites, produced by Galaxy Group, meet the ever growing demand for powerful fluxes that allow the mixtures to sinter at lower temperatures. In the tile industry, where there is a trend towards increasingly short firing times, the addition of magnesium to feldspar gives the finished product a coherence equal to or greater than that of products obtained with longer firing times using traditional feldspars.

 

Sodium Feldspar


 Soda feldspars are especially Na-11% qualified for fast firing technologies.Galaxy co-operates with Galaxy mines & minerals, a company operating several mines in Bhilwara. The products are distinguished for the use in sanitary and porcelain tile bodies, especially for superwhite "Gres porcellanato". The grades with low Fe2O3 - and TiO2- contents are dedicated for the use in glazes and enamels.

 

Potassium Feldspar


 Potash feldspars are especially high grade K-14%  for fast firing technologies. The products are distinguished for the use in glass sanitary and porcelain tile bodies, especially for white "Gres porcellanato". The grades with low Fe2O3  - contents are dedicated for the use in glazes and body

 

Sodium Feldspar

 

   SF/01  SF/02 
 Silica  SiO2   68% ( + 1% )  70% ( + 2% ) 
 Alumina  Al2O3   18% ( + 0.5% )  18% ( + 2% )
 Sodium Oxide  Na2O   11% ( + 1% )  9% ( + 1% )
 Potassium Oxide  K2O   0.35% ( + 0.5% )  2% ( + 1% )
 Titanium Oxide  TiO2  Nil  Nil
 Calcium Oxide  CaO   Nil  0.25% ( + 0.05% )
 Magnesium Oxide  MgO   Traces  0.25% ( + 0.05% )
 Ferric Oxide  Fe2O3   0.05% ( + 0.05% )  0.1%
 Loss On Ignition  LOI   0.1%  0.2%

 

 

Potassium Feldspar

 

   PF/01 PF/02  PF/03 
 Silica  SiO2   66% ( + 1% )  68% ( + 1% )   70% ( + 1% ) 
 Alumina  Al2O3   19% ( + 0.5% )  17% ( + 0.05% )  16% ( + 1% )
 Potassium Oxide  K2O   12% ( + 1% )  10% ( + 1% )  8.5% ( + 1% )
 Sodium Oxide  Na2O   2% ( + 1% )  3% ( + 1% )  3% ( + 1% )
 Titanium Oxide  TiO2   Nil  Nil  Nil
 Calcium Oxide  CaO   Nil  Nil  Nil
 Magnesium Oxide   MgO   Nil  Nil  Nil
 Ferric Oxide  Fe2O3   0.03% ( + 0.01% )  0.06% ( + 0.02% )  0.1% ( + 0.5% )
 Loss On Ignition  LOI   0.1%  0.2%  0.3% 

 

 

Quartz

 

   QZ/01  QZ/02 
 Silica  SiO2   99.5% ( + 0.2% )  98% ( + 0.25% ) 
 Alumina  Al2O3   0.2% ( + 0.1% )  0.4% ( + 0.1% )
 Ferric Oxide  Fe2O3   0.01% ( + 0.005% )  0.04% ( + 0.01% )
Titanium Oxide  TiO2  0.001%  0.001%
 Sodium Oxide  Na2O   0.001%   0.2% ( + 0.05% )
 Potassium Oxide  K2O   0.001%  0.2% ( + 0.1% )
 Loss On Ignition  LOI   0.1%  0.1%