Chemical,physical,sizes and usage of SA chromite sand /powder

Chromite Sand/powder is a naturally occurring spinel consisting primarily of the oxides of chrome and iron.

We，zhengzhou haixu abrasives co.,ltd,import chrome ore from South Africa,then wash,dry,silica removal,demagnetizing,sieve,test and pack in China port.

Chemical of SA chromite sand/powder

Cr2O3 ——————————————— ≥46.0%

SiO_{2—————————————————————-}  ≤1.0%

Fe₂O₃ ———————————————-≤26.5%

CaO _{—————————————————————-}≤0.30%            

  MgO ———————————————–≤10.0%

Al2O3———————————————–≤15.5%

P —————————————————≤0.003%

S—————————————————-≤0.003%

Cr/Fe———————————————– 1.55:1

Physical peroerties of SA chromite sand/powder

PH —————————————————- 7-9

Color ————————————————-Black

Acid Amount —————————————-≤2ml

Soil%————————————————–≤0.1

Bulk Density —————————————–2.5-3.0g/cm³           

Specific Gravity ————————————–4.0-4.8g/cm3

Moisture ———————————————-≤0.1%

Sintered temperature ——————————–≥1800℃

Filling density—————————————–2.6g/cm3

Melting temperature———————————≥2180℃

Sizes and usages of SA chromite sand/powder

1. AFS20-25  AFS25-30 AFS30-35 AFS30-40 AFS35-40 AFS40-45 AFS40-50 AFS45-50 AFS45-55 AFS 50-50 etc  mainly used in foundry,ladle filling sand etc
2. 200mesh 325mesh mainly used for glass pigment,refractory brick ,refractory cement and as wear-resistant material in brake pad,ceramic,plastic and rubber etc.