According to  diagram, which is drawn according to Na2O
and K2O quantities in SiO2 and distinguishes the two magma alkaline and sub-alkaline quantities, all samples are categorized under sub-alkaline (fig.
Our calculation suggested below results:SIo2 with the weight of 0/211 has the most effective indicator,Fe2o2 with the weight of 0/191was the second , Al2o3 with the weight of 0/163 was the third, Mgo with the weight of 0/133 was the fourth,Tio2 with the weight of 0/100 was the fifth, Na2o
with the weight of 0/089 was the sixth, Loi with the weight of 0/065 was the seventh and SO with the weight of 0/0/048 was the eighth effective indicator in the quality of casting silica sand.
The samples were analyzed by fusion with lithium tetraborate-XRF for Fe2O3, SiO2, P2O5, Al2O3, MnO, CaO, MgO, TiO2, Na2O
, K2O, Cr[sub.
The concentrate grades (Fe, V2O5, TiO2, SiO2, Al2O3, P, LOI, CaO, K2O, MgO, Mn, Na2O
and S) were then back calculated from these estimates.
Tenders are invited for Supply of Sodium silicate in liquid form, Specification as per IS: 361: 1995, Strength: 50 degree Bel, Total soluble silicate as Na 2O3:50%, Total alkalinity 16%, Na2O
and SiO2 ratio: 1: 2+/-0.
The graphic shows that the soils samples TNA-7, TNA-13 and TNA-21 have higher content of Al2O3, Fe2O3 and TiO2 and much lower contents of CaO, MgO, K2O and Na2O
than sample POX-10A.
MgO contents between 19% and 21%, and Na2O
contents better than 0.