46 Rankin and Wright — Ternary System CaO-Al 2 3 -Si0 2 . 



Table XV. 



Melting ten 



aperatures < 



>r tne Dinarj system 



jau.Ai2U3.zo 



1U2-AI2U3. 







Component 

 CaO.Al 2 3 .2Si0 2 



Eutectic 



Component 

 A1 2 8 



Composition 

 Wt. per cent 



CaO 



A1 2 3 

 Si0 2 



20-09 

 36-63 

 43-28 



19-3 

 39-3 

 41-4 







100 







Melting 

 temperature 





1550 



1547 



2050 



Fig. 13. 



1 X. 



1 Melt 



r + 



CaSi0 3 





/ Melt 

 / CaAI 2 Si 2 8 



1600 

 1500 

 1400 

 1300 



Cristobalite + Melt N. ^^^^tr^" 



Trid y mite + Melt \ \/<*° A, 2 3 .2Si0 2 + Melt _ 



Thdymite + CaO. Al 2 3 . 2 Si0 2 



| CaSi0 3 + Ca AI 2 Si 2 O e 



CaO. Si0 2 





CaO. Al 2 3 .2 5i0 2 





Si0 2 CaO.AI 2 3 25i0 2 



Fig. 13. Temperature-concentration diagrams of the binary systems 

 CaO.Si02-CaO.Al 2 3 .2Si0 2 and Si0 2 -CaO.Al 2 3 .2Si0 2 . 



Table XVI. 

 Melting temperatures of the binary system 2CaO. Al a O s .Si0 2 -2CaO.Si0 2 . 





Component 

 2CaO.Al 2 3 .Si0 2 







***** c sr 



Composition 

 Wt. per cent 



CaO 40-83 42*3 

 A1 2 3 37-19 35-0 

 Si0 2 21-98 22-7 



45-8 

 29-5 



24*7 



46-6 

 28-3 

 25-1 



49-6 50*7 65 

 23-7 22- 

 26-7 27-3 35 



Melting 

 temperature 



1590 1588 



1574 



1564 



1545 1625 2130 



Table XVII. 

 Melting temperatures of thebinary system CaO. Al 2 3 .2Si0 2 -2CaO.Al 2 3 .Si0 2 . 





CaO CO A7o r2Si0 2 ™ ic 





Component 

 2CaO.Al 2 3 .Si0 2 



Composition 

 Wt. per cent 



CaO 

 Al 2 <) 

 Si0 2 



20-09 



, 36-63 



4328 



23-2 30-2 

 36-8 36*8 

 4<»- 33- 



37-75 

 37-25 

 25- 



35-6 



37-1 

 27-3 



40-83 

 37-19 

 21-98 



Melting 

 temperature 





1550 



1538 1385 



1586 



1535 



1590 



