Cryogenic Grinding Equipment
Cryogenic grinding mill feeders are designed to enable cryogenic grinding by cooling materials to embrittlement temperatures using liquid nitrogen. Cryogenic grinding technology ensures that materials that do not grind at ambient temperatures will achieve a cool enough temperature for fine grinding by the time they reach the pulverizer or hammer mill.
With cryogenic grinding equipment from Pulva Corporation, you can effortlessly reduce materials to the desired size for your most demanding industrial grinding applications. Our cryogenic grinder attachment uses a liquid nitrogen cooling system to enable accurate particle size distribution for materials such as thermoplastics, rubbers, elastomers and other materials not suited for grinding at ambient temperatures. As a leading company in cryogenic grinding technology, we have the comprehensive knowledge base needed to direct our customers in the right direction, helping them secure the cryogenic grinding equipment best suited to their needs.
Cryogenic Feeders & Milling Equipment for Sale
Pulva's cryogenic feeder system is a specially constructed stainless steel heat exchanger designed to optimize heat transfer, using liquid nitrogen as a refrigerant to enable cryogenic milling for materials unable to be ground at room temperature. The feeder is suitable for pre-cooling a wide variety of materials to their embrittlement temperature, enabling cryogenic grinding for plastic polymers, specialty chemicals, rubber, food and drugs. Heavy-duty components and simplicity of construction assure a durable and reliable cryogenic grinding process.
Pulva's Cryogenic Grinding Solutions
The cooling conveyor operates with high thermal efficiency resulting in lower nitrogen consumption. The grinding 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 specified particle size distribution. Some products can be reduced to as low as -325 mesh with cryogenic pulverizing.
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 into 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 for the cryogenic grinding process.
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.
Applications of Cryogenic Grinding Systems
Cryo-milling equipment like our liquid nitrogen feeder attachment and cryogenic pulverizer serves to cool materials that could not otherwise be ground to the point of friability. These machines are applied across several major fields, with Pulva supplying cryo-milling equipment for the pharmaceutical, plastic and rubber industries among others. Because of their unique capabilities, cryogenic grinding mill feeders are commonly used to reduce polymer-type products to powder.
Cryogenic feeders can effectively cool the following materials in preparation for grinding:
- Rubber
- Plastic
- Resin
- Thermoplastic
- Composites
- Adhesives
- Wax
- Food products
- Biological samples
- Coatings
Advantages of Using Cryo-Milling for Industrial Applications
When you use liquid nitrogen grinding equipment for cryogenic milling, you will experience all the advantages of these innovative systems. Some of the many benefits of cryogenic feeders include:
- Facilitating sensitive material grinding: Our feeders enable users to crush temperature-sensitive, hard-to-mill materials with ease through liquid nitrogen cooling, and improve grinding efficiency.
- Preserving product quality: Cryogenic mill feeders for plastics preserve the quality of milled products by preventing thermal degradation throughout the grinding process.
- Preventing caking: Because cryogenic milling equipment safeguards temperature-sensitive materials from thermal deterioration, it subsequently eliminates the risk of product caking within the mill.
- Increasing production rates: Feeders help to optimize particle size, reduce production times and increase particle yield for maximum output.
- Improving process safety: Cryogenic grinding feeders generate an inert atmosphere that protects against product oxidation and fire with stainless steel, improving operational safety.
A Leading Cryogenic Mill Manufacturer
Pulva Corporation is a family-owned business that has provided companies with top-of-the-line equipment, services and parts to serve their size reduction needs for over 80 years and counting. Established in 1938, we have spent decades developing the knowledge, skills and expertise needed to assist customers in all industries, setting them up with the tools that best fulfill their specific objectives.
Over the past five years, we are proud to have grown considerably and achieved tremendous success, which we attribute to our experienced employees, state-of-the-art facilities, dedication to research and development, and advanced manufacturing equipment. These factors combine to bring you the best cryogenic milling experience possible, with the best equipment available, such as state-of-the-art cryogenic mills and grinders.
Find Your Grinding Solution With Cyrogenic Pulverizers
If you are looking to grind tough materials with precision and ease, Pulva Corporation has cryogenic feeders for sale optimized to meet your needs. As industry leading cryogenic grinder and pulverizing equipment manufacturers, we are committed to helping our customers minimize downtime using efficient, high-performance machines trusted by companies worldwide. Our products are utilized by organizations in industries ranging from pharmaceuticals to cosmetics to recycling and more.
Receive a custom quote on a cryogenic feeder by contacting us today!