hello ted sir 

please assist on why the silica is also important for burning in my case high lsf around 117 lsf of raw meal comes in kiln and coal ash becomes very low at some times and kiln becomes dusty as soon as silica is increased the kiln becomes bright and healty why does it happen and what is the exact technicall reason

Quartz is very hard to grind and therefore concentrates in the coarse fraction of the kiln feed. The corase grains of quartz are then very difficult to fully combine in the clinker leading to high free lime clinker and high kiln fuel consumption.

Sir,

Kindly share the method for estimation of Quartz > 32 mic. & Calcite > 90 mic .size on sabloksaini15@gmail.com please .

Regards,

Please send me method