Process for the preparation of raw mix for the production of cement and sulphuric acid

摘要

A process for the preparation of raw mix for the production of cement and sulphuric acid by the cement-sulphuric acid process, which mix comprises calcium sulphate, coke and other additives, by separate grinding of the materials used, which comprises grinding the coke alone to a degree of comminution corresponding to a grain size spectrum, by weight, of <60 mu 25 TO 40% 60 TO 90 mu 8 TO 15% >90 mu 45 TO 70% AND THEN MIXING THE GROUND COKE WITH A FINELY GROUND MIXTURE OF CALCIUM SULPHATE AND THE REMAINING ADDITIVES, AND THE USE OF SUCH RAW MIX IN THE PRODUCTION OF CEMENT AND SULPHURIC ACID.