TECHNOLOY DEVELOPMENT FOR STRONG REDUCTION OF ENERGY CONSUMPTION AND CO2 EMISSION IN LIME AND CEMENT MANUFACTURE

Abstract

Cement and lime industry are responsible for 8% of global CO₂ emission; 35% of CO₂ comes from fuel combustion to heat and decompose limestone and form lime or “clinker” in open atmosphere while the remaining 65% comes from limestone rock itself.

High grade of both Lime and CO₂ were obtained faster and at much lower than conventional temperatures and CO₂ fully captured and utilized when using an HEVA reactor for limestone Calcination. Clinker, a precursory of cement, was partly obtained at lower temperature when starting from HEVA lime and fine quartz after mechanochemical pretreatment.