end of the kiln. 
of heat. 
STATE GHOLOGISE: 
Pittsburg coal of the following composition: 
The average composition of a good West Virginia 
Ultimate Analysis. 
If a coal is used which ignites less readily, the ignition 
takes place too far up in the kiln and the zone of maximum temperature 
is therefore too far removed and causes ringing and other difficulties, 
besides making it difficult to watch the vitrification of the clinker at close 
range. And again, this moving back of the clinkering zone causes the 
waste gases to leave at a higher temperature with subsequent greater loss 
Probably one of the best coals used for this purpose is the 
Per cents. 
(CRETE SYONON 5 SS ies Sapir cps ea oe a a 75.24 
JES IRO NEO PETIA 5.5 aah GiGi tot g ONSCRRON, dar ac A ar Sa 5.18 
(OP HINSTIN Ss 0G Sia rare A I tree Pt i er ee 8.24 
INITRTROPEXSTONS je" ove eres ste ec eee en nN Sa ae 1 Hil 
SUL FoI NINE 35'S tostl-c eicktrad sc carigeRcre Reta ets eB CE ae ee le 7) 
ANG 55 6 Sib 8 BIS GAG pS es PREP BRED HEED Tey Nn 8.02 
Proximate Analysis. 
MOTs TU C Meena te ies Ama or enti he Wier Rin oh ee IL Bd 
VOI Comm UGH ONS WHAHIEP. 5c doco dncccsscooeo ence 36.80 
EXECS Cae loo I eeMeeere mon inrdnyr crete ake! gd I RA Let Seed 53.81 
8.02 
mont largely used for cement burning is: 
The chief considerations to be taken into account when selecting a 
Ultimate Analysis. 
Per cents. 
(CHA SVOUD 5:6: 5idGS ash Ste: RIO Ta A Dn era 73.60 
Talay CLIR@ © Cerne tre ig Pe hr hee RE cS oat oes 5.30 
INTMTROERSINS ot isd bad aber cms Fe SRS Bea a an led a Pe 1.70 
Slo ln Uy area eae arte S ASIA Mero cost hee Se Baes ae To idee Soe evel bcs 0.75 
OPQEREIILS SS Sib See w ence Cas eo Tn ttle cae 10.00 
INLOTAURD So bib o Reo Line Bees Oa oe ee eee 0.60 
ANGI 0) 605 ie eS SBS aR Sara 8.05 
Proximate Analysis. 
IMOiStUITC mena ante amt brewer: PIS Sey eh aide 0.60 
Volante Conmlowsinole magnier..ocuosc0ccebosnodss ou ns 38.10 
pe cdec an OMe shen t aes tw: Sree a cunws, blot 53.24 
AMD he, SBS SESS Hise Oe Te eae neleeate et ae 8.06 
cement coal are: 
ie 
i © 
Heating power must be sufficiently high. 
Sufficient amount of volatile combustible matter. 
coal from Fair- 
Low sulphur content not more than 2 to 2% per cent. 
Not more than to per cent. of ash. 
