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Particle size reduction is an important part of pharmaceutical production. Cryogenic grinding with liquid nitrogen is an effective means of obtaining ultrafine and uniform particle size, while improving product quality and stability as well as production rates.
Cryogenic grinding is most effective when the product is sprayed with liquid nitrogen as it is being conveyed and introduced into the Attritor. An additional benefit of cryogenic milling in an internally agitated ball mill is the ability to fully immerse the product in liquid nitrogen during milling.
REDUCTION systems can handle standard applications using grinding in ambient air as well as special applications such as rubber elastic or temperature sensitive materials using cryogenic pulverizers where refrigerants embrittle the product in an upstream process so that it can then be ground.
USB2 US10/395,416 USA USB2 US B2 US B2 US B2 US A US A US A US B2 US B2 US B2 Authority US United States Prior art keywords polymer non dra homogenizing slurry Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
cryo grinding equipment drag reducing Polyolefin Drag Reducing Agents Produced By Noncryogenic Grinding. Fine particulate polymer drag reducing Receive info on patent apps like Polyolefin drag reducing agents produced by noncryogenic grinding or other areas of cryo grinding equipment drag reducing agent.
Jun 17, 2004· Noncryogenic process for grinding polyolefin drag reducing agents ... Cryogenic grinding of the polymers to produce the particles prior to or simultaneously with coating with an antiagglomerating agent has also been used. However, some powdered or particulate DRA slurries require special equipment for preparation, storage and injection into a ...
cryo grinding equipment drag reducing. Cryogenic Treatment Is It For You? Custom Design Performance. First, Deep Cryogenic Treatment is an extended process that very gradually "freezes" or, when final machining, polishing, grinding and honing are done AFTER cryotreatment, This means less drag and a reduced coefficient of friction, a ...
Cryogenic grinding of plant and animal tissue is a technique used by microbiologists. Samples that require extraction of nucleic acids must be kept at −80 °C or lower during the entire extraction process. For samples that are soft or flexible at room temperature, cryogenic grinding may be the only viable technique for processing samples.
What is Cryogenic Milling? Cryogenic milling, or cryomilling, is the process of using liquid nitrogen to lower the temperate of the material and/or the milling process. AVEKA''s cryogenic hammer mills can typically reduce the particle size from small pellets down to the 100s of microns. Cryo .
The use of liquid nitrogen to chill the pellets enables more effective size reduction. Cryogenic grinding can be mechanically difficult, requiring expertise to manage moisture, clumping and other important quality elements. Why use cryogenic grinding: Some polymers require the use of cryogenic grinding in order to reduce the particle size.
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FIELD OF THE INVENTION. The invention relates to processes for producing polymeric drag reducing agents in a finely divided particulate form, and most particularly to processes for grinding polymeric drag reducing agents to produce fine particulates thereof that do not require grinding at cryogenic .
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Noncryogenic process for grinding polyolefin drag reducing agents. A process for producing fine particulate polymer drag reducing agent (DRA) without cryogenic temperatures, is described. The grinding or pulverizing of polymer, such . »More detailed
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May 14, 2007· The invention relates to processes for producing polymeric drag reducing agents in a finely divided particulate form, and most particularly to processes for grinding polymeric drag reducing agents to produce fine particulates thereof in two or more passes that do not require grinding at cryogenic temperatures. BACKGROUND
Our particle size reduction equipment is customizable to meet your specific milling and dispersion needs. We also offer a wide assortment of grinding media and provide toll milling and refurbishing services. Union Process is also the leading manufacturer of Rubber Inks for balloons, swim caps and other rubber products.
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The CryoMill is tailored for cryogenic grinding. The grinding jar is continually cooled with liquid nitrogen from the integrated cooling system before and during the grinding process. Thus the sample is embrittled and volatile components are preserved.
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