Agglomeration in Industry: Occurence and Applications, Vol. by Pietsch W.

By Pietsch W.

This two-volume paintings, besides Agglomeration processes—phenomena, applied sciences, gear (Wiley: 2002), offers an entire evaluation of the sphere. Early chapters in brief describe the basics; the remainder textual content describes the prevalence of agglomeration in undefined, business functions of measurement expansion by means of agglomeration, and different makes use of of particle adhesion. The industries for which purposes are defined comprise pharmaceutical, chemical, meals, animal feeds, fertilizers and agrochemicals, development fabrics and ceramics, mining, metallurgical, reliable fuels, and powder metallurgy. Chapters are supplied on functions in environmental regulate, together with recycling of polymers, recycling of secondary uncooked fabrics, and dimension growth for the stabilization and disposal of particulate stable wastes. functions also are defined for business improvement, troubleshooting and optimization, and for unmarried debris and nanotechnology. An exhaustive bibliography and checklist of proprietors are integrated. Pietsch has been a consultant in mechanical method know-how in considering writing his dissertation on the Technical U. of Karlsruhe (Germany) in 1965

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Nevertheless, some materials also tend to flocculate in wet grinding. Since the adhesion forces causing flocs are mostly electrical in nature, the addition of a small amount of electrolyte to the suspending liquid nearly always suffices to prevent flocculation. 4 Agglomeration By definition, the size enlargement by agglomeration operation makes use of all binding mechanisms and often enhances them in suitable environments and equipment. All agglomerates that are manufactured are made intentionally and are desired.

Deposition and/or manipulation of individual particles. Most technologies in categories (A) to (D) can be subdivided into two techniques: * * those utilizing no binder, and those requiring a binder. It should be pointed out that the binding mechanism in binderless agglomeration often resembles that of bonding with a binder. This is due to the fact that binders are sometimes inherently available and act during agglomeration and/or post-treatment. A typical example of this process is the wet agglomeration (Fig.

Evaporating moisture may condense on the cooler silo walls and drip into the charge, forming wet agglomerates and causing strong capillary adhesion bonding of particles on the walls. Insulation of the silo and/or forced large volume venting can be employed to avoid condensation and agglomeration problems. Bridging can totally block the discharge from silos, thus causing severe operating problems. Because adhesion even of finely dispersed dry solids cannot be avoided, agglomerates and bridges must be destroyed by special devices.

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