ABSORPTION OF SULFUR DIOXIDE IN WASTE CALCIUM CARBONATE SLURRY II. THE INFLUENCE OF THE PARAMETERS ON THE ABSORPTION RATE
SZÉP ALEXANDRU*, HARJA MARIA “GH. ASACHI” TECHNICAL UNIVERSITY IAŞI, FACULTY OF CHEMICAL ENGINEERING, DEPARTMENT OF INORGANIC PRODUCTS ENGINEERING, 71A D. MANGERON BD., 700050, IAŞI 10, ROMANIA, *E- MAIL: ALSZEP@CH.TUIAŞI.RO
Using Lewis’s reactor technique we have studied the influence of the calcium carbonate’s nature and its milling degree on the saturation rate of the slurry with different rations between the solid and the liquid. The evolution of this process has been expressed by variation of the content of sulfur dioxide absorbed, reported to the reaction mass. The result shows the importance of the source of calcium carbonate’s nature and milling degree on the absorption rate. Regardless of the carbonate’s type – natural or waste product – and the s/l ration in the suspension, the sulfur dioxide concentration in the reaction mass is over the value obtained for water. If the dry milling in balls or impact-mills changes in a reduced measure the dissolution rate, the wet milling guarantees an advanced reactivity.
