Binding Mechanisms of Agglomeration

The binding mechanisms of size enlargement by agglomeration were first defined and classified by Rumpf. According to Table 3 they are divided into five major groups, I to V, and several subgroups. 

Adhesion and cohesion forces in not freely movable binders 

Interfacial forces and capillary pressure at freely movable liquid surfaces 

Capillary forces at the surface of aggregates filled with liquid 

The formation of solid bridges by chemical reactions or hardening binders depends only on the participating materials, their chemical reactivity, and their tendency to harden. Sometimes elevated temperatures and/or pressure improve the binding characteristics and may cause a modified, potentially stronger, bridge structure. Chemical reactions are often activated by the presence of moisture. 

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An important group of binding mechanisms of agglomeration is characterized by the formation of binder bridges at the coordination points between the... 

Figure 15. Classification of the phenomena of binding mechanisms of agglomeration...

Therefore, while during the spray drying of solutions and emulsions, mostly hollow spherical particles are produced by a process which is not directly defined as agglomeration, the production of dry particles from suspensions and slurries uses the binding mechanisms of agglomeration to yield true agglomerates. 

There is a great variety of pressure agglomeration methods, each corresponding to one or more of the binding mechanisms of agglomeration (see Section 5.1,1, Tab. 5.1, Fig. 

Special Technologies Using the Binding Mechanisms of Agglomeration... 

Some of such low cost solutions will be described in the following as examples of how the binding mechanisms of agglomeration can be used in innovative ways [B.42]. 

He received the equivalents of B.S. and M.S. degrees in Mechanical and, respectively, Chemical Engineering from the Technical University (TH) of Karlsruhe, West Germany, in 1959 and 1962 (Dipl.-Ing.). In 1965 he earned his Ph.D. (Dr.-Ing.) at the same University with work on the Fundamentals of Binding Mechanisms of Agglomeration. Prior to his industrial career, Dr. Pietsch did further research in the... 

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