Discover RETSCH Laboratory Pulverizers for material analysis, quality control and research. Specifically designed to support scientists and researchers, RETSCH mills achieve precise and reproducible particle size reduction with high accuracy. These mills are designed to pulverize sample materials on a laboratory scale in preparation for analysis.
RETSCH laboratory pulverizer mills are crucial for quality management, R&D processes and pilot production, serving as essential tools for material analysis and development across various industries.
RETSCH laboratory pulverizer mills utilize various mechanisms, including pressure, friction, and impact, to reduce material size. Materials introduced into the grinding chamber are subjected to a series of crushing forces. Blades, hammers, or rings and a series of screens ensure the desired fineness.
莱驰拥有最先进的研磨仪系列，几乎适用于任何材料的粗粉碎、细粉碎和超细粉碎。多种研磨工具和附件可供选择，不仅能确保无污染的样品制备，还能满足建筑材料、冶金、食品、制药或环境等不同应用领域的特殊要求。
When trying to achieve analytical fineness in powder production, the initial particle size of the sample often dictates the pulverizing machine. However, sometimes more than one machine is needed. This is because materials with a large initial particle size require a two-step pulverization process: pre-crushing and fine grinding. The combination of both pre-crushing and fine grinding machines allows for efficient and effective pulverizing of materials regardless of their initial particle size, ensuring the production of high-quality powders suitable for various analytical and industrial applications.
Pre-crushing is the crucial first pulverizing step for materials with large initial particle sizes. At this stage the particles are reduced to a size that can be efficiently handled by a fine grinding pulverizer. Pre-crushing ensures that the material can be further comminuted in the subsequent fine grinding stage without causing inefficiencies or potential damage to the equipment. Typical pulverizers for pre-crushing are jaw crushers and hammer mills.
Jaw crushers are designed for the rapid and effective pulverization of medium-hard, hard, brittle, and tough materials. The Jaw Crusher BB 250, for example, achieves particle sizes down to 2 mm, supporting throughputs of up to 300 kg/h and features easy cleaning possibilities.
The RETSCH Hammer Mill HM 200 handles large feed sizes up to 100 mm, pulverizing them to below 0.8 mm, with an array of sieves from 2 mm to 40 mm ensuring defined particle sizes for different material types, including tough, fibrous, or even moist samples.
Fine grinding is employed to achieve the desired analytical fineness. This stage involves a different pulverizer machine designed for high-precision pulverization, capable of producing a uniformly fine powder. Typical pulverizers for fine grinding are disc mills, ball mills and rotor mills. Depending on the application and desired throughput, continuous or batch processing may be advantageous and will determine the choice of pulverizer.
RETSCH Disc Mills efficiently and quickly pulverize hard, brittle, and fibrous materials batchwise. RETSCH offers the Vibratory Disc Mill RS 300. The RS 300 pulverizes samples in grinding sets up to 2000 ml within seconds to some minutes.
RETSCH Planetary Ball Mills are distinguished for their exceptional versatility and efficiency in batchwise pulverization of a wide range of materials down to nanometer size in both dry and wet modes.
RETSCH Rotor Mills are designed for the continuous pulverization of a wide variety of materials, offering efficient and consistent crushing performance. For example, the RETSCH SR 300 Rotor Mill features a variable speed range of 3,000 to 10,000 rpm and a feed size capacity of up to 25 mm, enabling an adjustable pulverization down to <50 µm particle size.
The following criteria are important to consider when selecting a suitable pulverizer:
Drum mills are highly effective at pulverizing large quantities of material to a fine powder in a relatively short time. Drum mills work by rotating a drum filled with balls or rods and the material to be ground. The movement and impact of the balls within the rotating drum pulverizes the material into a fine powder. These pulverizers are known for their simplicity, robustness and effectiveness in pulverizing large batch sizes of sample volumes up to 35 l.
The RETSCH Drum Mill TM 300 features a rotating drum filled with balls to pulverize materials down to <20 µm, combining high pulverization efficiency with the ability to process a wide range of materials. Its robust design and ease of operation make it suitable for both laboratory applications and pilot scale pulverization, ensuring consistent particle sizes and versatile use. The TM 500 is equipped with a 150 l drum for further upscaling.
RETSCH Planetary Ball Mills are capable of producing extremely fine particle sizes down to the nanometer range with a high degree of uniformity. These pulverizers operate on the principle of planetary motion, where jars filled with balls and sample rotate like planets around the sun. This unique motion generates very high pulverization energy. The result is a shorter pulverizing time and the ability to achieve particles <0.1 mm. However Planetary Ball Mills offer smaller maximal jar volumes than a Drum Mill of max 500 ml.
The Planetary Ball Mill PM 100 is a powerful benchtop model with a single grinding station and allows for grinding up to 220 ml sample material per batch.
When you choose RETSCH laboratory pulverizers, you choose precision. With a RETSCH pulverizer you can rely on more than a century of experience and the best of German engineering technology. You will receive a product that is long-lasting, reliable and engineered with an eye for detail. With RETSCH you can expect:
Elevate your research capabilities with RETSCH laboratory pulverizer mills. Contact us today to discuss how our equipment can enhance your laboratory’s productivity and results. Our team is here to guide you through selection, installation, and beyond, ensuring that you make the most of your RETSCH equipment.
Important criteria include the material properties of the sample, the initial feed size, the required final fineness, feed quantity, and for ball mills, the energy input. Selection of suitable grinding tools is also crucial based on hardness, abrasion resistance, and possible contamination.
Choosing RETSCH laboratory pulverizers ensures precision and reliability, benefiting from over a century of experience and German engineering. Advantages include high-quality, reproducible results, high throughput, and expert support, ensuring streamlined sample preparation and efficient pulverizing.
Typical pulverizers for pre-crushing include jaw crushers and hammer mills, while rotor mills and ball mills are commonly used for fine grinding. Each is designed for different stages of the pulverization process.
When the initial particle size of the sample is coarse, a two-step pulverization process involving pre-crushing and fine grinding may be necessary to achieve analytical fineness. This ensures efficient processing and high-quality powder production.
