In this column, author Greg Mehos offers details on how particle size enlargement is often used to reduce the likelihood of unwanted powder agglomeration. This is because the likelihood of caking generally decreases when particle size increases due to the decrease in a powder’s overall cohesive strength and why he often recommends intentional agglomeration when the objective is to prevent it.
In this column, author Greg Mehos explains the basic types of agglomeration mechanisms, the equipment involved, and how to choose the process most suitable for your desired end result.
This sodium bentonite processing facility switched from tungsten-carbide-tipped pins in its pin mixer to versions covered in a nickel matrix cloth with tungsten carbide chips. The result has been a “significant” increase in the amount of time between pin changeouts, according to processor Black Hills Bentonite.
Dry granulation basically involves using compaction and comminution to agglomerate and then break down poorly flowing powders into granules to help ensure a homogenous blend. This article explains how dry granulation can be used to maintain a homogenous powder blend and flow for a tablet press. The article also discusses supplier-conducted tests on how recycling screened-out granules back into the raw powder affects the blend.
Agglomeration processes often yield a material with an array of particle sizes. When handled or dispersed from a hopper, these agglomerates can segregate. In this column, consultant Greg Mehos discusses the problems that can be encountered when these particles flow from a bin or hopper. He also offers tips and equations that can shed light on how to mitigate this sifting segregation.
In wet agglomeration, a liquid binder is added to two or more dry ingredients to cement the particles together, thus forming larger particles. Several types of liquid-solids blenders can be used for wet agglomeration. This article's first section discusses the basics of wet agglomeration. The last two sections survey the various types of batch and continuous wet agglomeration equipment, with comparative information on components and operation, advantages, and disadvantages.
Agglomeration is the size enlargement of particles by various mechanisms. This article gives a brief overview of two agglomeration methods Growth-tumble and pressure - that are commonly used with dry bulk solids.
Columnists Ray Cocco and Ben Freireich discuss agglomeration with the understanding that knowing the mechanism will help you meet your goal — whether you want agglomeration to occur or you’re trying to avoid it.
Columnist William H. Engelleitner defines a broad range of agglomeration-related terms.
Particle agglomeration is often desirable because agglomerates have less dust, show improved flowability, and require less volume for storage or transport.
Columnist Eric Matovich offers tips on ways to control pathogenic bacteria when rewet agglomerating powders for high-care markets.
Columnist Eric Matovich discusses the importance of agglomeration and how to integrate it into an overall manufacturing process.
Columnist William H. Engelleitner answers some commonly asked questions about handling green agglomerates.
Columnist Jim Davis discusses when and why you should consider using agglomeration in your bulk solids manufacturing process. He also covers the various benefits agglomeration can provide.
An international fertilizer producer was struggling with wet, sticky phosphate agglomerates in its small plant. After contacting Franklin Miller for a new lump breaker, those problems were solved.
Readers ask questions about starting a new process that requires agglomeration.
Columnist Brian Young discusses how demand for new products, changing regulations, and the search for new and novel uses of existing materials are helping drive trends in the briquetting industry.
Columnist John J. Walsh looks at different types of agglomeration methods and explains how the drying process impacts them.
Columnist Brian Young discusses what you should consider when selecting a binder for your briquetting applications.
The columnist discusses how sustainability can benefit companies that use agglomeration.
Except for studies focusing on granulation, ingredient agglomeration hasn’t been researched in much detail and has been the focus of very few academic or industrial articles. In fact, drug agglomeration in pharmaceutical manufacturing has only recently been recognized as a common problem.
Columnist Rachel Smith discusses granulation processes and the mechanisms involved in those processes.
Soluble silicate binders have been used effectively for decades in various agglomeration applications. Recent developments have improved their utility and provided more formulation options that broaden the range of materials that can be agglomerated with these binders.