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Chromite sand with South Africa origin for foundry

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La description

Chromite sand with South Africa origin for foundry

Foundry Grade chromite sand, also known as chromite ore, is a special sand for foundry. It is a natural spinel dominated by chromite. After crushing, grinding sieving and batching to typical Particle size distributions as per customers’ requirement, it is suitable for moulding in foundry. Our standard material is a 4-sieve distribution. This means that 4 sieves contain more than 10% retained. Our current material has more than 90% on the ASTM 40-100 sieves. A typical sieve distribution is shown below.

Chromite sand has been selected and used in foundries as a result of its unique combination of properties. The properties listed below generally result in a better surface finish and reduced likelihood of casting defects.

*High thermal conductivity

* Low thermal expansion

* Wetability resistance to molten steel

* Basic to neutral pH

*High Fusion Point

Chemical composition

Cr2O3

46.0%min

SiO2

1.0%maximum

FeO

26.5%maximum

CaO

0.3%maximum

MgO

10.0%maximum

Al2O3

15.5%maximum

P

0.003%maximum

S

0.003%maximum

Cr/Fe

1.55/1

Physical composition

Bulk Density

2.5-3g/cm3

Specific Gravity

4.0-4.8g/cm3

PH Value

7-9

The amount of the acid

2ML max

Percent soil

0.1%maximum

The sintered

1600

Filling Density

2.6g/cm3

melting temperature

2180°C

Informations Complémentaires

Lieu d'origine:

South Africa, South Africa

Marque:

RM

Numéro de modèle:

CMS-46

Chemical Composition:

Cr2O3 46%

Taille:

as per customers request, as per customer request

Cr2O3 (Min):

46%

Concentrate Or Not:

Is Concentrate

Humidité (%):

0.1%maximum

Taper:

Mine

Chrome Ore Concentrate:

Chrome Concentrate 46-50%

Usage:

foundry

Couleur:

le noir

pH:

7-9

melting point:

2180 degré

Chemical:

Cr2O3, FeO, SiOe

filling density:

2.6g/cm3

Goûter:

available