Relationship between Water-Soluble and Insoluble Content of the Cement
Dust and Existent Control Means
Kamal T. Hindy and Ahmed A. A. El-Abssawy
Air Pollution Research Department, National Research Centre, Tahrir St.,
Dokki, Cairo, Egypt
Corresponding author: Ahmed A. A. El-Abssawy
Air Pollution Research Department, National Research Centre,
Tahrir St., Dokki, Cairo, Egypt
Fax: 00202 /3370931.
CEJOEM 1998, Vol.4. No.2.:170-178
Key words:
Air pollution; air quality control; cement industry
Abstract:
This study aimed at evaluating the efficiency of the two most common
control means in order to contribute to the combat of atmospheric pollution
due to cement dust through their influence on the concentration of the
chemical components of cement dust. An investigation of the water-soluble
and insoluble content of the cement dust before and after collection by
electrostatic precipitators and fabric filters installed on cement kilns
and mills in three of the major Egyptian cement factories; two in Cairo
and one in Alexandria, has shown that:
a) Electrostatic precipitators have enriched the concentrations of
calcium, chloride and sulphate ions in the cement dust whilst fabric filters
had diminished these concentrations.
b) Fabric filters have increased the ash concentration in the cement
dust contrary to the effect of the electrostatic precipitators.
c) All the investigated electrostatic precipitators and fabric filters
have increased the tarry matter content and decreased the concentration
of the combustible matter in the controlled cement dust.
Received: 20 April 1996
Accepted: 25 March 1998
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Posted: 15 November 1998