Wikipedia
Rotary kiln
A rotary kiln is a pyroprocessing device used to raise materials to a high temperature ( calcination) in a continuous process. Materials produced using rotary kilns include:
- Cement
- Lime
- Refractories
- Metakaolin
- Titanium dioxide
- Alumina
- Vermiculite
- Iron ore pellets
They are also used for roasting a wide variety of sulfide ores prior to metal extraction.
Usage examples of "rotary kiln".
To make it, you heat a finely ground mixture of coal, limestone, clay, sand, and blast furnace slag in a rotary kiln until it melts together into clinkers.