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  • CHROMITE SAND

CHROMITE SAND

Catalog: Abrasive | 2023-10-09

Chromite Sand is a naturally occurring spinel consisting primarily of the oxides of chrome and iron. It is a by-product of ferro-chrome production and is mainly used in foundry applications and in glass production.

It is used as a highly fireproof sharpener for moulds and cores. Originally from South Africa. The sand is produced by crushing chrome ore and its washing in spiral concentrators, subsequent drying, dust cleaning, screening and sorting as per grain size.

Product Details

PROPERTIES

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

MT

1 big bag

Sizes


AFS25-35 AFS25-30 AFS30-35 AFS35-40 AFS40-45 AFS45-50 AFS40-50 AFS50-55 AFS55-60 AFS60-65

APPLICATION

  • 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.