The Use Of Calcium Hydroxide With Special Characteristics In Glass Furnace Flue Gas Treatment With Recovery Of Residues Into Vitrifiable Mixtures

After analyzing the factors that affect the chemico-physical characteristics of limes, a few examples of the use of these in semi-dry and dry flue gas abatement systems are presented, both in laboratories and in pilot and industrial plants, stressing how efficiency of abatement varies with two physical parameters - the humidity and temperature of fumes - and with one engineering parameter - the amount of residual free lime recycled; examples are also presented on the impact of hydrated lime specific surface on desulfurization efficiency. Industrial applications in the glass industry and related issues are also illustrated. The technical and economic benefit of recovering the dry end product as a raw material is emphasized. In particular, it has been shown that residual free lime improves the glass making process.