A RAW METAL COMPOSITION FOR USE IN PRODUCTION OR CEMENT AND SULPHURIC ACID AND A PROCESS FOR PREPARING SAID COMPOSITION

摘要

Preparation of a raw mix for use in the production of cement and sulphuric acid by the cement-sulphuric acid process, wherein coke is comminuted to a degree that at most 10% by weight of the coke has a particle size of less than 0.1 mm and at least 90% by weight has a particle size of less than 20 mm, but at least 60% by weight has a particle size greater than 0.2 mm, after which the thus comminuted coke is mixed with a mixture, of fine particle size, comprising calcium sulphate and the remaining additives.