When air separator is added in close circuit with the mill, a part of the warm bleed air
from the separator circuit goes to the ESP along with the mill vent air. The addition
results in an increase in dust loading, gas temperature and reduction of dew point and
a corresponding increase in dust resistivity. However, when the separator arrangement
incorporates cement cooling, a separate dust collector is normally used to clean the
separator gastivity are given in Table 5 [2].