Shreenath Mining Works Private Limited

Sodium Feldspar

Sodium Feldspar

Specifications

Color Off White
Packaging size 50 Kg
State Lumps
Specific Gravity 2.6
Application Industrial
Whiteness 40-50%

In Ceramic bodies, the main vitrifying (fluxing) agent is feldspar.l the majority of white ware bodies contain good proportions of feldspar. It acts as a flux. In the ceramic industry, the flux is defined as that portion of the body which develops glass phase. This is provided mostly by feldspar. The amount of flux in a ceramic body should be only in such a proportion as to develop the desired amount of vitrification. If excess of flux is added, the fired body becomes very glassy and consequently, brittle.


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Chemical Properties (% Oxides)

Product

Grade

SiO2

AL2O3

K2O

Na2O

Fe2O3

MGO

CaO

TiO2

Lol

Fring result 1175 oC – 1220oC

Firing appearance

N – 1

First

69%

18%

.50%

10%

.10%

.1%

.05%

Nil

0.10%

Milky white

White to cream

 

 

(+1%)

(+1%)

(+5%)

(+1%)

(+.03%)

(+.1%)

(+.05%)

 

 

 

 

N – 2

Second

72%

17%

2%

8%

.15%

.2%

.2%

Nil

.20%

Off white

White to cream


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