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Successfull tests have been completed recently in the milling of cacao nibs into a homogeneous pumpable paste. The objective of the customer was to obtain a pumpable paste with a particle size smaller than 100 microns which could be fed to a ball mill for final size reduction. Customers problem with the present machine was the penetrating smell of cacao for the environment, which caused him to stop the production line. The Urschel® machine used was the Comitrol Processor Model 1700 with micro cutting head and with an impeller speed of 11,000 rpm. The motor power was 40 Hp. The result was a very fine paste with a relatively low temperature after milling of about 55°C. This temperature and the compact practically closed milling system reduces the smell of cacao aroma`s considerably. The capacity of the machine was from 800 - 1,000 kgs/hr.
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