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Foundry Chromite Sand from China

Technical Data Sheet of Foundry Chromite sand:

 CHEMICAL COMPOSITION
Cr2O3≥46.0%
SiO2≤1.0%
FeO≤26.5%
CaO≤0.3%
MgO≤10%
AL2O3≤15.5%
P≤0.003%
S≤0.003%
Cr/Fe1.55:1
TYPICAL PHYSICAL PROPERTIES
Hardness:Mohs:5.5-6
Melting Point:Sublimes at 2180 ℃
Sintering point:>1800℃
The sintered1600℃
Specific Gravity:4.0-4.8 g/cm3
Bulk density(LPD):2.5-3 g/cm3
Color:Black
PH7-9
Percentage of free acid present in the sand0%
The amount of the acid≤2ML
Percentage of soil≤0.1
Percentage of Moisture≤0.1

Available size: AFS25-30,AFS25-35, AFS30-35,AFS35-40,AFS40-45,AFS45-50,AFS40-50,AFS50-55,AFS55-60,AFS60-65 325# 400#

THE ADVANTAGE OF FOUNDRY CHROMITE SAND

Comparing with silica sand,chromite sand can avoid most sand stick on the casting,therefor it can also save cost to make surface treatment. Moreover,chromite can be recycle used for several times upon to different technology.

Over all the chromite ore in the world, the one from South Africa are of the best quality level.So HAIXU Abrasive import original chromite ore from there and refine it to better purity to 46% Cr2O3.

MAIN APPLICATIONS OF FOUNDRY CHROMITE SAND

Chromite Sand in the foundry industry

Its properties enable the material to be used in high duty grey iron and steel foundries as core and mould

making sand. Its high thermal conductivity gives it good chilling properties, low thermal expansion gives rise to good dimensional stability. Its basicity being close to neutral allows the use of a wide range of resin

bonding systems and inorganic binders, it has a high refractoriness and a broad sieve distribution.

 

Chromite Sand in the steel industry

In steel production, Chromite Sand is used as well filler for protection of the sliding gate in large steel holding ladles.

 

Chromite Sand in the glass industry

When ground to a fine flour, Chromite Sand is used for the production of green glass beverage containers.

application

How to Choose grit size?

Generally,the smaller casting need to make, the finer grit size foundry adopted.The following frame shows it for reference:

Less than 500KGS

500-1000KGS

1-10 Tons

10-30 Tons

30-100 Tons

AFS40-70

AFS 45-50

AFS 45-50

AFS40-45

AFS 35-40

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