Lehigh Southwest Cement

The preblend limestone is mixed with bauxite (alumina source) and iron and then ground in ball mills to create the raw meal for the pyro process. Material is stored in two large silos to allow for further blending as the material is sent to the next step of the process.

Raw meal is then sent to the top of the dual 4-stage preheater tower where it is heated to ~1650° F before entereing the kiln. The kiln is then responsible for heating the material to ~2400° F where it becomes "clinker".

The clinker then enters the cooler where it is cooled before being stored in a set of two clinker silos.