Diaspore
Diaspore having a chemical formula Al2O3H2O is beta monohydrate aluminum. It is chiefly used in making high alumina refractory material, by itself or by bonding with flint or plastic clay according to aluminum content needed in the finished product. It is also used as a fuller in pesticide industry.

Therefore is no BIS specification prescribed for diaspore. The sub-Committee on refractory raw materials of the DGTD in their report August 1985 has stipulated the following two grades of diaspore for utilization refractory industry.

 

Grade - I

Grade - II

Al2O3

58 60%

52 55%

Fe2O3

1 1.5%

2.5% max.

TiO2

1% max.

2% max.

CaO

0.2 - .03%

1% max.

PCE ORTON CONE

36 min.

34 min.

 

Refractory:

Al2O3

52% (max.)

Fe2O3

0.5% (max.)

TiO2

2% max.

CaO

1% (max.)

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