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Our Reactive alumina was evaluated for high alumina castable application by an independent laboratory of international repute viz ACC , CRS THANE in 1998. High alumina castables were prepared using white tabular alumina (WTA) as aggregate base and 10% RAC 95 produced by Rohini Industries. In a comparative study imported alumina was used as the 10% additive keeping all other conditions same. Results clearly show our products are comparable to best quality reactive alumina available internationally.
Below are the details of the same.


Aggregate base
Reactive alumina used
% used
Hydraulic binder %

Bulk density g/cc after 110c
CCS kg/sq cm after
         110 C
       1100 C
       1550 C


MOR kg/ sq cm after
        110 C
        1100 C
        1550 C


PLC % after
        1100 C
        1550 C


HOT MOR kg/ sq cm
         @ 1400 C


RUL Ta degree C


Creep at 1560 C/ 5hrs %

ROHINI INDUSTRIES
WTA
RAC-95
10
4

3

495
606
1335


120-150
180-190
300-400




0.06
-0.1


60-95



1685


-0.91
IMPORTED
WTA
Imported
10
4

2.98

270
500
700


50-60
120-160
300-390




Nil
-0.19


60-75



1695


-0.76

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