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

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By Pietsch W.

This two-volume paintings, in addition to Agglomeration processes—phenomena, applied sciences, apparatus (Wiley: 2002), offers an entire evaluation of the sector. Early chapters in short describe the basics; the rest textual content describes the prevalence of agglomeration in undefined, commercial functions of measurement expansion by way of agglomeration, and different makes use of of particle adhesion. The industries for which functions are defined comprise pharmaceutical, chemical, nutrition, animal feeds, fertilizers and agrochemicals, development fabrics and ceramics, mining, metallurgical, sturdy fuels, and powder metallurgy. Chapters are supplied on functions in environmental keep an eye on, 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 in view that writing his dissertation on the Technical U. of Karlsruhe (Germany) in 1965

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With this type of agglomerates, “strength” can be only determined by defining a maximum degree of deformation and associating the measured force at this point. For this evaluation a force/displacement curve must be determined (which is similar to the force/time graph shown in Fig. 8). While for some applications it is important to know the force causing final catastrophic failure, particularly in such cases where the production of fines from brittle agglomerates must be avoided during handling, the first indication of partial breakage could be selected to determine the strength.

On the other hand, sudden changes in the direction of flow will cause high energy impacts of particles with the wall, causing build-up. Friction between particulate solids and pneumatic conveyor walls may result in high electrostatic charges on both partners. They depend to a large extent on whether the particles and/or the walls are electrically conductive and if the lines are grounded or not. System design must take these conditions into consideration. 6 Storage Adhesion phenomena are involved in, for example, the bridging of particulate solids in hoppers.

1). 48]. For the practical and industrial investigation of agglomerate strength, stresses that occur during storage and handling are experimentally simulated. 97]. All values obtained by these methods are strictly empirical and cannot be predicted by theory because it is not known which component of the applied stresses causes the agglomerate to fail. For the same reason, the experimental results from different methods can not be compared with each other. It is even possible that results obtained with the same method but carried out by different laboratories and/or different technicians are not compatible because of characteristic procedures that are inadvertently used by different people.

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