Volume 3, Issue 5, November 2013 Study of Processing …
International Journal of Engineering and Innovative Technology (IJEIT) Volume 3, Issue 5, November 2013. 388 hot-air furnace may be used to supply this heat, but usually hot waste gases from the kiln are used. For this reason, the raw mill is usually placed close to the kiln preheater. Ball mill is used in cement industry.