Chromite sand for foundry lining is a special foundry sand. It is a natural spinel
dominated by chromite sand from South Africa. After crushing, grinding, and sieving; it
is divided into the prescribed grain size and is suitable for sand for piling (making cores).
AFS45-50, AFS50-55, AFS55-60, AFS60-65, and AFS 60-70 fine-grained chromite sand
can be used as raw materials for foundry paints.
FOUNDRY COATING CHROMITE SAND APPLICATIONS
Chromite Sand for Foundry Paint Chromite sand is ideal for gray iron and high-strength
steel foundries as sand for core and mold making. The high thermal conductivity of
chromite sand gives it good properties.,
chemistry index physical index
Cr2O3 ≥46,0%
AI2O3 ≤15,5%
SiO2 ≤1.0%
MgO ≤10%
Fe2O3 ≤26,5%
Cr / Fe 1,55: 1
CaO ≤0,30%
C ≤0,003%
PAG ≤0,003%
filling density 2,6 g / cm3
humidity percentage ≤0,1
Sintering 1600 ° C
sintering temperature 2180 ° C
ph value 7,9
bulk density 2,5-3 g / cm3
melting point ＞ 1800 ° C
