Method of making granulated l-lysine

Details Method of making granulated l-lysine Method of making granulated l-lysine

C - Chemistry, Metallurgy

12

P

C12P 13/08 (2006.01) C07C 227/40 (2006.01) C07C 229/26 (2006.01)

Patent

CA 2056900

ABSTRACT OF THE DISCLOSURE A dust free, free-flowing, L-LysineHCl granular product is made from a liquid solution or slurry by a spray granulation process. The L-LysineHCl is sprayed onto an agitated bed of L-LysineHCl seed particles until the size of the particles reach a harvest size. In one embodiment, the agitated bed is a fluidized bed. In other embodiments, the agitated bed is a rotating mechanical device including either a drying drum or a disk and cone combination, where the particles are grown in an intermittent spray/dry cycle. Then the harvested particles are sorted for size. Those particles which are a non-acceptable oversize are ground to seed size and returned to the agitated bed. Those particles which are a non-acceptable undersize are remelted, purified, and returned to the liquid solution. Other salts of L-Lysine may also be used, such as an L-Lysine sulfate salt, an L- Lysine phosphate salt, and an L-Lysine calcium salt.

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