Manufacturing methods of high-quality lime for desulfurization from low-grade limestone

摘要

The present invention relates to a method for producing high-quality desulfurized lime by removing impurities using physical differences of low-limestone compositions, producing CaO-rich high-quality desulfurized lime, and increasing the use of low-grade limestone, The present invention relates to a method for upgrading low grade limestone for the production of de-activated quicklime including a preparation step, a calcination step, a quick lime grinding step, a first fractionation step, a magnetic force selection step and an air classification step.