OPTIMUM CAUSTICIZING EFFICIENCY REQUIRES PRECISE CONTROL OF BOTH DRY SOLIDS AND LIME MUD FLOW TO THE LIME KILN - RESULTS FROM A MILL STUDY

Estimates indicate that the lime quality from a rotary kiln depends on a delicate balance between fuel feed and heat consuming processes. Di sturbances to this balance are caused by variable dry solids content i n the lime mud feed and by excessive and variable dust formation in th e cold end. We describe how the stability in our causticizing plant co uld be improved by some rebuilds of the mud filters and by installing dry recirculation of the ESP dust.