Cement mill bag filters
After the cement mill bag filters are put to use for some time it becomes extremely difficult to take out the bags for inspection /replacement.They get stuck to the cages firmly and many times it becomes necessary to tear the bag to take it out.
I am looking for a possible solution for this problem.
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re Cement mill bag filters
The problem is from reaction of cement dust with moisture in BH.
Here are some rules:
- Good insulation (100 mm, rain water tight)
- Avoid cold spots/bridges
Do Pre-coating with approx. 200 g/m2 inert material
(e.g. CaCO3, Ca(OH)2)
e.g. bag filter with 5’000 m2 bag surface à 1 ton raw meal being injected upstream of the bag filter into the gas duct by a rented silo truck equipped with an on-board compressor
deactivate cleaning cycle before stopping the filter
clean down the filter as much as possible and do pre-coating before restarting the filter