Foundry Chromite Sand
PHYSICAL AND CHEMICAL INDEX
|
Item
|
Unit
|
Index
|
|
Cr2O3
|
%
|
≥46.0%
|
|
SiO2
|
%
|
≤1.0%
|
|
FeO
|
%
|
≤26.5%
|
|
CaO
|
%
|
≤0.30%
|
|
MgO
|
%
|
≤10.0%
|
|
Al2O3
|
%
|
≤15.5%
|
|
P
|
%
|
≤0.003%
|
|
S
|
%
|
≤0.003%
|
|
Cr/Fe
|
|
1.55:1
|
|
Bulk Density
|
g/cm³
|
2.5-3
|
|
Color
|
/
|
Black
|
|
PH
|
/
|
7-9
|
|
The amount of the acid
|
/
|
≤ 2 ML
|
|
Percent soil
|
%
|
≤0.1
|
|
Percent Moisture
|
%
|
≤0.1
|
|
The sintered
|
℃
|
1600
|
|
Percentage of free acid present in the sand
|
%
|
0
|
|
filling density
|
g/cm³
|
2.6
|
|
sintering point
|
°C
|
> 1,800
|
|
melting temperature
|
°C
|
2,180
|
PACKING:1MT big bag
SIZES:AFS 25-35 AFS25-30 AFS30-35 AFS35-40 AFS40-45 AFS45-50 AFS50-55 AFS55-60 AFS60-65
