By Wolfgang Pietsch(auth.)
An updated evaluation facing the incidence and key purposes of agglomeration, together with undesirable adhesion and helpful measurement growth in pharmaceutical, nutrients and animal feed, chemical, fertilizer and agrochemical, mineral, construction fabric and ceramic, steel, sturdy gasoline, in addition to different industries. in addition, the booklet emphasizes contemporary advancements on the point of unmarried debris and purposes of agglomeration phenomena in nanotechnology.
the writer has an unlimited educational and commercial event as researcher, instructor, developer, dressmaker, seller, and consumer. he's a professional and advisor within the box of agglomeration, its applied sciences and items. This historical past makes the particular assessment of the topic attainable. Wolfgang Pietsch has held a couple of top positions in either US and German businesses and is a widespread speaker at meetings and seminars. He has already written 3 prior books on agglomeration.
meant for everyone operating in businesses that technique and deal with particulate solids, this ebook is helping in figuring out and controlling undesirable agglomeration in addition to selling the applying, improvement, and development of equipment for the necessary use of agglomeration.Content:
Chapter 1 creation (pages 1–2):
Chapter 2 Agglomeration as a popular, self sufficient, and Interdisciplinary box of technology (pages 3–6):
Chapter three Agglomeration basics (pages 7–21):
Chapter four Undesired Agglomeration:Methods of warding off or Lessening its impact (pages 23–36):
Chapter five important makes use of of Agglomeration:Agglomeration applied sciences and techniques (pages 37–58):
Chapter 6 business purposes of measurement expansion by means of Agglomeration (pages 59–478):
Chapter 7 Powder Metallurgy (pages 479–483):
Chapter eight functions in Environmental keep watch over (pages 485–539):
Chapter nine improvement of commercial purposes (pages 541–588):
Chapter 10 Optimization and Troubleshooting of Agglomeration structures (pages 589–631):
Chapter eleven functions of Agglomeration Phenomena for unmarried debris and in Nanotechnologies (pages 633–653):
Chapter 12 Outlook (pages 655–659):
Chapter thirteen Bibliography (pages 661–691):
Chapter 14 thesaurus of Application?Related phrases linked to Agglomeration (pages 693–719):
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Extra resources for Agglomeration in Industry: Occurrence and Applications
Example text
Consequently, the generation of the highest possible shear gradient is often considered advantageous when selecting agitators. During extended storage, the particles in pharmaceutical suspensions often form agglomerates that can no longer be destroyed by shaking the preparation. This is of particular concern in, for example, eye drops. The problem can be avoided by controlled flocculation of the solids. After the addition of an electrolyte, the fine particles aggregate to loose flocs that can be easily redispersed by shaking the dispenser prior to application.
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). To cause adhesion, Ta must be larger than one. 2) Most of the attraction forces (Tab. 1) have only a short range; their magnitude and strength decreases quickly with increasing distance.
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. For this purpose, inflatable cushions are mounted to the inside walls of silos or the material is momentarily fluidized by the (pulsed) injection of air. In the case of coarser solids, which tend to form domes, it is often sufficient to select a cone with steeper sides (“mass flow” design).