Displaying 26–50 of 2324 results for Powder & Solids
Fine powders present problems that bulk solids do not when they are contained in a bin, hopper or processing vessel. The primary problem is the powder's flow pattern. This 10-page PDF whitepaper discusses solutions to this problem.
<p>The problem with solids is that sometimes they don’t want to move. This ...
<p>There’s an art form to solids processing. Sure, science is the major...
<p>This Chemical Processing eHandbook examines some of today’s Powder ...
<p>This Chemical Processing eHandbook takes a look at how chemicals ...
<p>Getting a better handle on Solids Process is an on-going challenge for ...
<p>Dry mixing plays an important role in many processes. The wide variety of ...
<p>Are you looking for more information about solids processing operations? ...
Handling wet solids present several challenges, particularly when it comes to storage.
Chemical Processing: Effectively Handle Powders -- Take a practical approach to powder characterization and tap into operating experience.
Too much or too little moisture can cause problems during processing and storage
Plants often offer telltale signs of flow problems, such as a hammer or barrels near equipment or welded-on patches. Flowability testing is expensive and, so, frequently neglected during process development but can head off potential issues.
Measuring solids can be challenging when moisture is present.
science-based methods for process scale-up must be developed.
A plant should assess several critical factors such as how material will be unloaded or loaded, how sensitive a material is to attrition, agglomeration, vibration and mechanical deformation, and what will be done with used bags.
Emerson Process Management introduced the Rosemount 5708 Series of 3D Solids Scanners for the continuous measurement of level, volume and mass of bulk solids and powders in large vessels, bins and silos.
Particle fluidization often can offer important benefits such as improved heat transfer and possibly better mixing. Even when attrition or product segregation poses risks, limitations can be designed around or even used to advantage. Here’re some tips.
Chemists developing a process don’t have the same concerns as engineers trying to scale it up. However, a chemist can identify the physical properties and extrinsic conditions that control various steps and ease coming up with a meaningful design.
Blenders often don’t perform properly because users have accepted certain myths — e.g., ones related to blending time, equipment comparability and fluidization. This column debunks those myths and provides some pointers for successful blending.
When faced with a drying problem, use drying curves to take a closer look.
Properly accounting for how bulk solids actually will flow in a vessel or overall process can be crucial for successful operations. Learning some simple parameters can often provide a good sense of flowability.
Sometimes, engineers are surprised when well-known scientific principles explain the actions of particulate solids.
Sampling is crucial and demands particular care because fine particles tend to not follow the path of other particles and are more susceptible to segregation. Two problems that arose — with a thief sampler and with a blender — provide important insights.
Fine powders often need air injection to increase flow rates to an acceptable level. With entrained or injected air, powders flow like water, but when deaerated, the extremely low flow rate may be confused with a hang-up or arching condition.
everal approaches exist to help resolve the issue of solids settling in slurries.