cement raw mill operator in qatar
Acoustic Analysis of Machineries in the Cement. mean SPL dB at its basement Among the nine units, the packing unit, kiln to cement mill and crusher to row mill conveyers, kiln and pre heater have the equivalent sound pressure level (L Aeq) lower than 85 dB So they are acoustically the safe zones for the labors But in the high noise exposure units, there is major risk of hearing loss for the ...
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