Data, Courtesy of Harbison'Walker Refractories Company, Pittsburgh, Pa.
Refractory Stability Goes UP with the Alcoa Alumina Content!
The chart shows how ALCOA Alumina pushes up the pyrometric cone equivalent of refractories. B u t this is j u s t o n e important factor i n m a i n t a i n i n g peak o p e r a t i n g effi ciency. T h e reason w h y refractories made with ALCOA Alumina last longer and result in less c o s t l y d o w n time is because A L C O A Alumina gives refractories the following money - saving qualities *,
• Strength a n d stability u n d e r l o a d at h i g h temperatures. • Resistance to spoiling, abrasion, a n d fluxing a t high t e m p e r a t u r e s . • Resistance to corrosive slags a n d g a t e · . • Negligible porosity a n d shrinkage.
your operating temperature require ments from leading manufacturers. We do not m a k e refractories, but we"*ll gladly refer you to dependable sources of supply. Call your near est Alcoa sales office or write to: ALUMINUM
BUY FROM YOUR REFRACTORY MANUFAC TURER—You can b u y b r i c k a n d oth^r shapes c o n t a i n i n g v a r i o u s p e r c e n t ages of A L C O A A l u m i n a t o rae^t
CHEMICALS
COMPANY
OF
DIVISION,
Building, P i t t s burgh 19, P a .
AMERICA,
1779
Gulf
ALCOA
A L C Ο A * Η Ε Ml GALS ALUMINAS AND FLUORIDES ACTI VATED ALUMINAS · CALCINED ALUMINA^ ALUMINUM FLUORIDE · SODIUM FLUORIDE
LOW SODA ALUMINAS
V O L U M E
2 2,
2 6,
NO.
4 7 .
N O V E M B E R
SODIUM ACID FLUORIDE
1948
TABULAR ALUMINAS FLUOBORIC ACID
HYDRATED ALUMINAS CRYOLITE
3465
