There will certainly be operational problems if you remove the insulation from your ESP. The temperature of the inner walls of the ESP will then become equal to the ambient temperature of 40 degrees C. This will be below the acid dew point of the gases passing through the ESP and you will have condensation on the inner walls and internal fittings of the ESP. You will then suffer from severe corrosion problems and will have to replace the internal fittings of the ESP on a regular basis.
My recommendation would be to adjust the raw mix chemistry to raise the LSF and AM and compensate for these changes. This will reduce the amount of baghouse fines required and therefore the ZnO additions. The mineralising effect of the ZnO will allow a higher LSF kiln feed to be combined in the kiln. At the same time C₃S and C_{3A content in clinker and cement will be increased offseting the retardation effects of the ZnO.}

We would like to know the effect of removal of an ESP outside casing insulation if the prevailing ambient temperature is 40 degrees Centigrade and rainfall is scarce, ie dry weather, and is it possible to get a decrease in gas temperature inside the filter by this action or there are going to be some operational problems?

There are kilns burning SPL on North America. I believe that one of the plants at Harleyville was doing this. If there are any environmental concerns it is that the pot liners absorb some heavy metals in the electrolysis process and that this might lead to emissions of these materials. The SPL will also contain high levels of NaF and this will significantly affect clinker chemistry and kiln operations but not necessarily emissions. The sodium and fluoride should all be retained in the clinker.

What do you know about consuming SPL in cement kilns in North America. What are the environmental concerns with this. There are kilns burning SPL on North America. I believe that one of the plants at Harleyville was doing this. If there are any environmental concerns it is that the pot liners absorb some heavy metals in the electrolysis process and that this might lead to emissions of these materials. The SPL will also contain high levels of NaF and this will significantly affect clinker chemistry and kiln operations but not necessarily emissions. The sodium and fluoride should all be retained in the clinker.