Request a Quote (800) 878-5828 (724) 898-3000 Cryogenic-Feeder Home Products Industry Parts/Services Company Resources Blog The cryogenic feeder is a specially constructed stainless steel heat exchanger designed to optimize heat transfer, using liquid nitrogen as a refrigerant. The feeder is suitable for pre-cooling a wide variety of materials, including plastic, rubber, food and drugs to their embrittlement temperature for cryogenic grinding operations. Heavy-Duty components and simplicity of construction assure a durable and reliable cryogenic cooling system. The cooling conveyor operates with high thermal efficiency resulting in lower nitrogen consumption. The material is cooled to its embrittlement temperature traveling through the cooling conveyor. When the material is passed through one of our Pulva-Sizer® grinding machines, it is reduced to the required size. Some products can be reduced to as low as -325 mesh. The material to be ground is loaded into a feed hopper and from this, the material enters the cooling conveyor where liquid nitrogen at -320 F is sprayed directly onto the material. The liquid nitrogen vaporizes to a gas by absorbing the required heat of vaporization from the feed material. Seeking thermal equilibrium, the cold nitrogen gas continues to cool the feed material to its embrittlement point. A thermocouple and temperature controller are used to control and monitor the temperature within the cooling conveyor and the grinding mill discharge hopper. During the grinding stage, additional liquid nitrogen may be injected into the Pulva-Sizer® to remove heat caused by grinding. Testing is available in Pulva's Testing Lab. Get a Quote Contact Info Phone: (800) 878-5828 / (724) 898-3000 Address: 105 Industrial Drive, West Valencia, PA 16059 Email: sales@pulva.com © Copyright 2019 | All Rights Reserved | Pulva

Request a Quote (800) 878-5828 (724) 898-3000 Replacement Parts Pulva has been providing replacement pulverizing equipment for the particle size reduction industry for over 80 years. We have the expertise to provide reliable replacements parts for many of our competitors. Often we are able to supply these parts faster and cheaper than our competitors. Fill out the form and we will contact you. Get Started Drop us a line and we’ll get back to you! Phone: (800) 878-5828 / (724) 898-3000 Address: 105 Industrial Drive, West Valencia, PA 16059 Email: sales@pulva.com © Copyright 2019 | All Rights Reserved | Pulva