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Solids Handling

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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…

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Nanoparticles:Mild Dispersion

    As the nanoparticle market continues to swell, expertise is surfacing about nanoparticle grinding and dispersion processes. A grinding solution (wet grinding with agitator bead mills) achieves the production of nanoparticles with an average fineness of 40–100 nanometers (nm).…

Cold-spray coatings

Linde Gas (Murray Hill, N.J.; edlinks.chemengonline.com/6897-538) and partners have developed a high-pressure gas-delivery system that allows coating powders to be sprayed using liquid nitrogen at temperatures that do not melt the powder particles. The system has been optimized to support…

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Solids Processing

    A feeder for both batch and continuous operation Available in 7 models with feedrates from 1 to 550 ft3/h, the Better-Weigh Feeders (photo) are designed to provide feeding in either batch or continuous mode, depending upon the arrangement…

Ceramic molding without binders

The conventional way to make molded ceramic compontents involves the use of an organic binder (about 10-15 wt.%) to keep the shape of the fine ceramic powders. The binder is then burned off during the sintering process; this not only…

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Modeling Granular Flow Using Discrete Element Method – From Theory to Practice  

    Modeling the behavior of bulk solids has been a longstanding challenge for researchers and practitioners alike. The differences between fluids, rigid solids and bulk solids can best be illustrated by their responses to applied stress. For instance, when…

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Increasing Particle Sizing Efficiency

    With energy costs rising, the value of most powders and bulk solids has been rising steadily as well, giving manufacturers ample reason to improve production efficiency. "Companies not only want to reduce their consumption of power, they also…

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Silo Design And Selection

    There are a variety of reasons to consider the purchase of a new tank or silo1. As organizations grow, so does the need for increased storage capacity. Meanwhile, an old tank may become corroded or worn and require…

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The Do’s and Don’ts Of Chute Design

    The need to transfer bulk-solids materials from the outlet of a bin or from a conveyor, to a process, truck, or another bin is ubiquitous throughout the chemical process industries (CPI). Transferring material using equipment designed to mechanically…

Size Reduction Equipment

    This improved planetary mill adds new safety features The premium line is a new generation of this firm's planetary mills for laboratory application (photo). Compared with traditional planetary mills, the premium line is said to provide 250% more…