THE ROTARY KILN. 



4S3 



The variations in size are greater and more important than those 

 in shape. Until within two years ago it could be said that the standard 

 dry-process kiln was 60 feet in length and about 6 feet in diameter, while 



l"x 2 K Cap Screws 



^^r ,uj!L_ 



I i. ^T^~~l rf 



= JJU-i 1 1 



Hand.Hole P.ARJ SECTIONAL ELEVATION 



CROSS SECTION AT TAIL END 



1 | 



CROSS SECTION AT RACK, 

 j*~ iBi-H 



ROLLER DETAIL 

 (.CAST STEEL) 



PLAN OF BASE 



GUIDE ROLLERS AND STANDARD 



ROLLER BEARING AND DRIVING RACK AT HEAD END. 



SIDE ELEVATION L._ 



END ELEVATION 



r-pTF^qy- 



|CLLJli 



STANDARD D.ETAILS 

 BQLLER BEARING OF TALL END. 



END ELEVATION SIDE ELEVATION 



HOOD OF C'SCHAR3E END. 



FIG. 118. Details of 60-foot rotary kiln. (Engineering News.) 



in the wet process the length ranged from 60 to 80 feet. These lengths 

 had become well established in practice, soon after the rotary kiln list 

 proved successful, and for many years it seemed as if practice had become 

 fixed in this line at least. 



