Ball Formation in Kiln

Dear Sir,

What are the main reasons for ball formation in kiln as our raw mix analysis as below

LOI = 37.0%

SiO2 =  12.2-12.5

Al2 O3 = 3.4-3.5

Fe2O3= 3.1-3.3

CaO = 41.2-41.5

MgO= 1.8-2.2

SO3 = 0.5-0.6

Na2O =0.4-0.5

K2O = 0.2-0.3

Cl =0.12-.14

LSF = 101-103

SM  = 1.9-2.1

AM = 1.0-1.1

Residue on 90 micron = 14-15%

Resisdue on 212 micron = below 1%

We are using the south African coal "A"

Regards

Surendra

 

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