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