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Solids Handling

Vacuum Injection of Powders in the Center of the Emulsifier

Several manufacturing procedures for chemical, cosmetic, pharmaceutical or food products distribute powder-like solids during the liquid or pasty phases of operations. The systems usually used for these operations require the injection of powders in an agitation tank. Dispersion is often…

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Cover Story: Move Difficult-to-Handle Bulk Materials with Flexible Screw Conveyors

Convey tough bulk materials that tend to pack, cake, smear, break apart or fluidize, and prevent separation of blended products Flexible screw conveyors are suitable for use with most bulk materials, from sub-micron powders to large pellets, both free-flowing and…

Focus on: Bulk Solids Storage, Handling & Packaging

An automated and precise powder dispenser Intended for distributing resins from reservoirs into reactors, reaction blocks, and microplates, The REDI automated powder-dispensing platform (photo) is available in several configurations. These include: the REDI super, which distributes powder samples from 100…

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Tank Coatings: Covering the Basics of Selection and Specification

The interior surfaces of your storage tanks are constantly at risk. If you walk past a tank often without giving thought to what is happening on the inside, it is because you trust the interior coating to protect not only…

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Chementator: Resodyn Unveils ‘Entirely New’ Mixing Technology

At the Chem Show last month (New York; Oct. 30 – Nov. 1), Resodyn Acoustic Mixers Inc. (Butte, Mont.; edlinks.chemengonline.com/6902-531) demonstrated its new, impeller-free mixing technology, which induces microscale turbulence through the propagation of acoustic waves. Dubbed ResonantAcoustic Mixing (RAM),…

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Solids Processing: Weighing Your Options — The 10 Most Important Scale Considerations

Scales are available in a dizzying array of types and sizes to suit different needs. Although it’s easy to default to price in order to eliminate the tedious task of researching your options, a basic knowledge of these ten key…

Microbial testing  

A molecular testing method that attains a viable count of microbial organisms in as little as 4 h compared to the typical 3–14 d needed by standard methods, has been commercialized by Lonza AG (Basel, Switzerland; edlinks.chemengonline.com/6901-544). The genetics-based (RNA…

A less expensive way to produce titanium

A new process to produce titanium, called the TiRO process, has been developed by a team from CSIRO (Melbourne, Australia; edlinks.chemengonline.com/6901-538) through its Light Metals Flagship. The process is said to halve the cost of producing titanium metal components by:…

Honoring a bulk-solids pioneer

Throughout the +100-year history of the chemical engineering profession, there have been numerous examples of a single individual making a breakthrough discovery or contributing a key theory to the field. The awareness of such “single-handed” contributions, however, has certainly diminished…

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Dry Screening: Sorting Out The Basic Concepts

    The screening process has always been the workhorse for solid-solid separation in chemical, pharmaceutical, food, mineral processing, coal and agricultural sectors. It can be done in dry or wet mode depending on the state of the feed and…