GEBUNDENER STOFF

摘要

Thermally shock stable bonded solid materials are formed by mixing a solid mineral or inorganic material in an aqueous medium with a lignosulfonate, treating the aqueous medium with a metal ion-based complexing agent (such as lime), with application of heat sufficient to maintain the lignosulfonate in fluid form, so as to produce an intimate mix of saturated slaked lime with lignosulfonate and the mineral or inorganic material, and thoroughly mixing the resulting substantially dry material with dry urea (or a derivative thereof) so as to cause the mix to agglomerate, preferably followed by shaping the agglomerates by briquetting or the like.