News Date:2015-09-14
1. Raw mix design (reduce liquid phase).
2. Increase cooling zone.
3. Keep hood draft pressure always negative.
4. Increase cooler air flow ratio (exactly at fixed plate).The air blasters were not effectively blasting hence allowing accumulation of KK on fixed grates.
5. Make sure that the shock bars of the cooler are working (shock bars sits along the width of the cooler and high pressure air is introduced periodically - the function is like shock blasters). If your cooler has not been provided with shock bars, it is simple to provide during shutdown and after you provide the shock bars, you will never see a snowman formation.I personally believe that adjusting chemistry/clinker liquid etc. It will not eliminate the snowman problems, but only reduce the problem.
6. Kiln was over burning. Even dent for secondary air temps and clinker liter weight which was high.
7. If your lab, if there are stationary rows of grate, this phenomenon is most likely to occur. In our case, stationery rows were the culprit and after changing over to moving rows, the problems were permanently solved. Chemistry was no more a problem.It is very essential that the cooler is operated on constant speed as far as possible.
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