By Pietsch W.
This two-volume paintings, besides Agglomeration processes—phenomena, applied sciences, apparatus (Wiley: 2002), presents a whole review of the sphere. Early chapters in short describe the basics; the remainder textual content describes the prevalence of agglomeration in undefined, commercial purposes of dimension growth through agglomeration, and different makes use of of particle adhesion. The industries for which purposes are defined contain pharmaceutical, chemical, meals, animal feeds, fertilizers and agrochemicals, construction fabrics and ceramics, mining, metallurgical, reliable 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 expansion for the stabilization and disposal of particulate sturdy wastes. functions also are defined for commercial improvement, troubleshooting and optimization, and for unmarried debris and nanotechnology. An exhaustive bibliography and record of owners are incorporated. Pietsch has been a consultant in mechanical procedure know-how in due to the fact that writing his dissertation on the Technical U. of Karlsruhe (Germany) in 1965
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Additional resources for Agglomeration in Industry: Occurence and Applications, Vol. 1
A typical example of this technique is in the pelleting (Fig. 10, b1–b6) of animal feed where the starchy component of feed grains becomes plastic and sticky during moistening and heating with steam while mixing the formulation in a kneader. 2). 1 Tumble or Growth Agglomeration The basic mechanism of tumble/growth agglomeration is shown in Fig. 1. 97]. To cause permanent adhesion, certain criteria must be fulfilled. 1 Tumble or Growth Agglomeration partners. According to Fig. 1) Both the attraction and the ambient forces are mainly dependent on the size x of the powder particle(s).
The above makes an alternative curing process advantageous: The molecules of a second molecular layer, if attached, would position themselves with the amine group extending outward. These amine groups are free to interact with other particles. Pressure intensifies this effect. The resulting chemical “bridge” is not as strong as a recrystallized salt bridge and the “set” can be broken easily. Sometimes a combination of the two types of conditioners is used. An example of this approach is finely divided kaolin or talcum powder treated with surfactant.
Such anticaking conditioning agents are usually applied by mixing them with the granular material in a rotary tumbler (typically a drum) prior to bagging. A modern variation of the above mentioned conditioning process is the coating with surface-active organic chemicals. It was found, however, that not all surfactants improve the physical conditions of granules. It was reported that the caking tendencies can be reduced by as much as 45 % if non-ionic chemicals were used but increased by as much as 37 % with the use of anionic materials.
Agglomeration in Industry: Occurence and Applications, Vol. 1 by Pietsch W.