Dear Experts,
Please give me a solution for the following problem with your expertise:
Case:
Kiln feed LSF fluctuation is more compared to raw mill LSF set point. (98)
When mill is in stopped condition and the bag filter dust diverted to raw meal silo the LSF increased up to 122 and during this period the Kiln becomes very dusty and the Kiln feed TPH reduced to 220 TPH from 255 TPH
When Mill is in stopped condition and the main bag filter dust diverted to intermediate bin and mixed with kiln feed with variable speed rotary feeder the kiln feed LSF increased up to 112. During this time, we were asking the mill section to start the raw mill As early as possible and after starting the raw mill the Kiln feed LSF came under control.
We are using Natural gas as fuel
The following actions taken:
Raw meal silo top star air slides checked for any jamming, and found OK
From raw meal silo to mix bin all the 8 sectors proper working condition checked and found OK
Intermediate bin RAF minimum RPM reduced to 200 from 400 and it was extracted with 200 RPM but the bin was being filled with high-level alarm. Because of this, we were forced to increase the RPM.
Any pressurizing conditions in the raw mill air slides checked and found OK.
Raw Mill output sampling points and Kiln feed sampling points checked for any abnormalities and found OK.
From pile set point, additive consumption cross checked and with existing additive consumption the raw mill LSF is matching.