RETSCH ZM 300 Ultra Centrifugal Mill

RETSCH ZM 300 Ultra Centrifugal Mill: Precision Grinding Redefined

The RETSCH Ultra Centrifugal Mill ZM 300 is a powerful and fast rotor mill for soft to medium-hard materials, temperature sensitive or fibrous substances. Also suitable for cryogenic of temperature sensitive materials. With a variable speed range up to 23,000 rpm this mill provides highest grinding performance and is easy to handle.

One of the key features of the Ultra Centrifugal Mill ZM 300 is the integrated temperature control. This ensures reproducibility even during long grinding times or when grinding large sample volumes. By monitoring the cassette temperature the mill allows fine adjustments to be made to improve reproducibility. Controlling grinding speed is crucial to reduce dust formation and ensure the quality of the animal feed sample while optimizing throughput and final fineness.

The ZM 300 has a wide range of rotors, ring sieves and cassettes so it is very versatile in sample preparation. The patented cassette system allows maximum sample recovery and easy cleaning, an optional cassette is available for higher volumes. The ring sieves have an aperture size range of 0.08 to 10 mm so the ZM 300 provides a defined final fineness for different applications. Cleaning rotors and ring sieves is straightforward as these parts can be washed in a dishwasher or under running water.

The mill has different collecting vessels for different sample volumes from 250 ml to 4.5 l. The ZM 300 can be equipped with an automated vibratory feeder and different cyclone systems to optimize the grinding process.

The integrated temperature sensor in the display allows to monitor the temperature during grinding. This helps to optimize the grinding process and to improve reproducibility by keeping the temperature increase moderate and preventing negative effects on the grinding results. Displaying the current cassette temperature helps prevent overloads by alerting users to manage their sample feeding rate effectively.

Compared to classic centrifugal mills like the ZM 200 the ZM 300 has a higher maximum speed of 23,000 rpm. This results in 15 to 20% finer particles depending on the material. So the ZM 300 provides higher final fineness and throughput especially for cryogenically pulverized polymer samples and fibrous materials like hay.The RETSCH 20.824.0002Ultra Centrifugal Mill ZM 300 is the solution for various applications like grinding of plastic materials, crushing of chicken feed and fine grinding. With its advanced features, robust design and excellent performance the ZM 300 is the standard for food and feed processing.

Rotor mills are used for high-speed size reduction of soft to medium-hard and temperature sensitive or fibrous materials.

The powerful Ultra Centrifugal Mill ZM 300 provides highest grinding performance and is easy to handle. The variable speed from 6,000 to 23,000 rpm allows gentle, neutral-to-analysis sample preparation in very short time.

Thanks to the integrated temperature monitoring system reproducibility is guaranteed even for long grinding times or volumes. The mill’s display continuously shows the recorded temperature, allowing precise adjustments to optimize grinding conditions.

The wide range of rotors, ring sieves and cassettes makes the ZM 30

Introduction

The RETSCH Ultra Centrifugal Mill ZM 300 is a powerful ultra centrifugal mill designed for high-speed size reduction of soft to medium-hard materials, including temperature-sensitive and fibrous samples. With its variable speed range of 6,000 to 23,000 rpm, this mill provides maximum grinding performance combined with ease of use, making it an ideal instrument for various industries, including food and feed processing. The integrated temperature monitoring system ensures reproducibility even during long grinding processes or when handling large sample volumes. This versatile ultra centrifugal mill is engineered to deliver consistent, high-quality results, making it a valuable addition to any laboratory or industrial setting.

Overview

The RETSCH Ultra Centrifugal Mill ZM 300 is a powerful and easy to handle rotor mill for high-speed size reduction of soft to medium-hard materials, temperature sensitive or fibrous substances. With the variable speed range of 6,000 to 23,000 rpm, the mill provides highest grinding performance and is easy to use. It is capable of handling various size reduction tasks, emphasizing its versatility in processing different materials. The temperature monitoring system guarantees reproducibility even for long grinding times or large sample volumes. For comprehensive particle size distribution solutions, consider the RETSCH AS 200 Vibratory Shaker, Control, 8in. That’s why the ZM 300 is the perfect instrument for laboratories and industries where precise and reproducible results are required.

THE STANDARD FOR FOOD & FEED

• Gentle high-speed pulverization due to pre- and fine grinding in one run* Temperature control and reproducibility by cassette temperature monitoring

• Patented cassette system for maximum sample recovery and easy cleaning

• Cassette for 600 ml sample volume

• Variable speed 6,000 to 23,000 rpm

• Ring sieves 0.08 – 10 mm

• Collecting vessels 250 ml to 4.5 l

• Automated vibratory feeder and various cyclone systems available

• Homogenizes samples for consistent results in food and feed processing. Crushing chicken feed at higher speeds increases efficiency and throughput, proves the grinding technique.

ULTRA CENTRIFUGAL MILL ZM 300REPRODUCIBILITY THROUGH TEMPERATURE MONITORING

The speed range 6,000 to 23,000 rpm allows to adapt the grinding process to the sample by keeping the grinding time as short as possible and the temperature increase as low as possible. Too much heat can damage the grinding results, for example if moisture or volatile components escape. Temperature monitoring is crucial to prevent volatile components from escaping during the grinding process.

The ZM 300 has a built-in temperature sensor which measures the temperature of the cassette lid near the ring sieve. The measured temperature is displayed on the mill’s display so the user can adjust the grinding process and improve reproducibility. Adjustments in grinding speed influence the quality and fineness of the ground sample, ensures accurate analysis. Additionally the ZM 300 ensures a constant particle size distribution which is the key to reproducibility.

ULTRA CENTRIFUGAL MILL ZM 300HIGHEST SPEED FOR FINEST FINENESS AND HIGHEST THROUGHPUT

The maximum speed of classic centrifugal mills like the well-known ZM 200 is limited to 18,000 rpm (rotor peripheral speed 98 m/s). The ZM 300 reaches 23,000 rpm (rotor peripheral speed 118 m/s) and produces 15 to 20 % finer particles depending on the material. The ZM 300 is perfect for cryogenic grinding and produces finer particles.

The higher speed has the biggest impact on polymer samples which are cryogenically ground or fibrous materials like hay. Compared to models with 18,000 min-1 the throughput can be increased by 10 to 15%.

Specifications

• Type: Ultra centrifugal mill

• Manufacturer: Retsch

• Model: ZM 300

• Sample throughput: 10-15% more than 18,000 rpm

• Variable: 6,000-23,000 rpm

• Max speed: 23,000 rpm

• Rotor peripheral speed: 118 m/s

• Temperature sensor: Cassette lid temperature near ring sieve

• Temperature: Adjust grinding and improve reproducibility

• Grinding: Adjustable to sample requirements, heat sensitive materials with variable speed and temperature monitoring to prevent heat buildup

• Final fineness: 15-20% finer than 18,000 rpm

Cryogenic Grinding

The ZM 300 is suitable for cryogenic grinding with grinding aids like liquid nitrogen or dry ice. This is especially useful for temperature samples like plastics or other materials that can be damaged by heat. The mill is designed for cryogenic grinding. By keeping the temperature low during grinding the ZM 300 prevents sensitive samples from degrading and delivers high-quality results. This makes the ZM 300 a versatile instrument for a wide range of sample materials including those that require cold grinding.

Operation and Maintenance

The Retsch Ultra Centrifugal Mill ZM 300 is designed for easy and safe operation. The large display and rotary knob makes it easy to enter the maximum grinding performance combined with the acceptable parameters. The patented cassette principle and push-fit method eliminates the need for tools for insertion and removal. Rotor and ring sieves can be cleaned very easily and all parts that come into contact with the sample can be washed in the dishwasher or under running water. Regular maintenance is recommended to ensure optimal performance and longevity of the mill. This user-friendly design means the mill is always ready to use, minimizes downtime and maximizes productivity.

Accessories and Options

The Retsch Ultra Centrifugal Mill ZM 300 can be equipped with various accessories and options to increase performance and flexibility. These are:

• Automated vibratory feeder: For high-speed maximum grinding performance combined with speed

• Different cyclone systems: For sample collection

• Collecting vessels: For different sample volumes from 250 ml to 4.5 l

• Optional cassette: For higher sample volumes

• Rotor and ring sieve sets: For specific applications, for optimal grinding results and sample qualityThese accessories and options allow you to tailor the mill to your needs and get the best performance for all applications, including learning more about ball mills.

APPLICATION EXAMPLES

Grinding sizes of plastic materials (POM or PP) after grinding with different sieves and speeds. The 23,000 min-1 speed results in a higher fineness for all sieves than 18,000 min-1. For example 19% finer when grinding POM with 0.12 mm sieve at 23,000 min-1.

The maximum sample throughput, e.g. when grinding chicken feed with 0.5 mm ring sieve, can be increased by 16% when grinding at 23,000 min-1 instead of 18,000 min-1. The ZM 300 is perfect for sample preparation in all applications and delivers consistent and reproducible results. For those interested in complementary equipment like soil testing tools, accurate data is vital for informed decision-making.