Production Facilities:

Manufacturing Process:

At the Landmark plant high calcium limestone (calcium carbonate) is quarried, crushed, washed and screened. The sized limestone is then calcined (heated) in rotary kilns from an initial temperature of around 1750^oF (954^oC) to a final temperature around 1950^oF (1066^oC) which results in the conversion of limestone (calcium carbonate) to quicklime (calcium oxide). The final product is further screened into the various sized quicklime products that are sold. A portion of the quicklime that is produced is sent to our hydrate manufacturing plant, located adjacent to the kilns, where the quicklime is reacted with water to produce dry hydrated lime products.(calcium hydroxide). Both quicklime and hydrated lime are very important products and both are actively marketed throughout the Southeast. (For details on the chemical reactions involved in the calcination and hydration production processes see chemistry.)

Limestone Source: