Overview
The document describes the Cryogenic Grinding Systems PPST by PALLMANN, specifically the CryoMillTM, type PPST, which is designed for producing high-quality powders from heat-sensitive plastics and elastomers. The grinding occurs at low temperatures (-70°C to -150°C) and high impact speeds (250m/s), resulting in particle sizes ranging from d97 = 500 µm to d97 = 80 µm. The system ensures optimum flowability and high bulk density of the powders.

Design and Features
The CryoMillTM is built for continuous operation with components made from cold-resistant stainless steel, ensuring ease of cleaning and maintenance. The system's electrical control allows for automatic operation within the selected temperature range, producing consistent quality powders. Key features include cubic particles with good flow properties, high throughput rate, low specific energy consumption, and compact design.

Method of Operation
Materials are cooled and embrittled using liquid nitrogen before being pulverized by impacts with pins on rotating discs. The embrittlement temperature and impact speed determine the particle size. The system includes pneumatic conveying and screening technology to achieve desired particle sizes, with oversized particles being reintroduced for regrinding.

Technical Data
The document provides specifications for two models: PPST 315 and PPST 400, detailing motor power and throughput rates, which depend on feed material and desired particle size.

PALLMANN Program
PALLMANN offers a comprehensive range of services including design, manufacturing, research and development, production scale testing, laboratory analysis, and worldwide service. They provide solutions for pulverizing, granulating, agglomerating, and recycling, with a wide array of products such as agglomerators, pulverizing systems, mills, shredders, and crushers.

Contact Information
The document lists contact details for PALLMANN offices in the USA, Brazil, Russia, China, and Germany, highlighting their global presence and service network.

Company Overview
PALLMANN is a leading manufacturer of size reduction machines and systems for process industries, offering customized and standard solutions for material preparation and recycling. Their headquarters in Zweibrücken, Germany, houses a large research and technology center, providing extensive testing and service capabilities.