talc lump

PHYSICAL ANALYSIS

CHEMICAL ANALYSIS

Whiteness: 92% Min

SiO2 > 61%

Brightness: 90 % Min

MgO> 32 %

Melting Temprature: 800oC

Fe2O3 < 2%

PH Value: 8.7-9.3   

Al2O3 < 0.40%

Specific Gravity 2.7-2.8 (average)

CaO < 0.5%

BET surface area: 1.3-2.5m2/g

Na2O < 0.061%

Size: Requirement

K2O < 0.02 %