This report reviews the principle of and problems encountered in the process of commercialization of the low temperature grinding system “CRYOMILL” which has been developed by the authors.
The principle of the system “CRYOMILL” is to cool materials having low temperature brittleness such as thermoplastic etc. by liquid nitrogen injection down to the temperature below its glass transition point and to grind the material by high-speed revolving mill.
During grinding process it is necessary to control heat generation which is inherent to the material and the key point in commercialization is to utilize cold energy effectively throughout the total system.
