The manufacture of cement includes mining and crushing of the raw material (limestone, clay, and sand), drying and grinding in a mill, burning in a rotary tube furnace and finally pulverization of the cement. ELTRA elemental analysers are used in all of these process steps.
ELTRA combustion analysers have played an important part in the quality control of the cement industry for over three decades as well as the determination of C, S and N, O, H in coal and geology applications. Several instruments have also been especially optimized for the analysis of ores, rocks, and coal.