The production of hydrated lime is a comprehensive project, including the crushing, grinding, sizing, calcining, cooling and other stages. Firstly, limestone enters a primary crusher to break the rock. Depending on the size of the feed stone required, limestone may go through a secondary or tertiary crusher to further reduce its size.
The stone is then screened into various sizes ranging from several inches to dust-sized particles. The sized stone is then washed. Secondly, processed stone is transported by conveyor belt to the lime kilns. To cook or “calcine” limestone, there must be a significant transfer of heat to the limestone. In general, the heat transfer from the fuel source to limestone can be divided into three stages, including the preheating, calcining, and cooling.
After those stages, quicklime leaving the calcining zone is cooled by direct contact with “cooling air.” And then, quicklime can be processed into hydrated lime by crushing the quicklime, adding water to the crushed lime (water accounts for approximately 1% of raw hydrate), and then classifying the hydrated lime to ensure it meets customer specifications before it is transported.
According to the hydrated lime production process, hydrated lime production machines consist of limestone crushing machine, vibrating feeder, vibrating screen, conveyor belt, limestone grinding mill, duct collecting machine, rotary kiln and other associated machines. As a professional manufacturer of mining equipment, Zenith can offer all kinds of hydrated lime production machines for customers both at home and abroad. And we can design and install a whole set of hydrated lime production line according to your mining scale and conditions.
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