Agglomerates bonding mechanisms

Rehydration Bonded Alumina. Rehydration bonded aluminas are agglomerates of activated alumina, which derive their strength from the rehydration bonding mechanism. Because more processing steps are involved in the manufacture, they are generally more expensive than activated aluminum hydroxides. On the other hand, rehydration bonded aluminas can be produced in a wider range of particle shape, surface area, and pore size distribution. 

Section III. Bonding Mechanisms in Agglomerates Adorjan, L. A., Theoretical prediction of strength of moist particulate materials, in Agglomeration 77 (K. V. S. Sastry, ed.), p. 130. Am. Inst. Min. Metall. Pet. Eng. Trans., New York, 1977. 

Forces that work to agglomerate individual particle into granules include five primary bonding mechanisms 1 ... 

As indicated by eqn. (4) (Section 2.1), the main variables affecting the strength of an agglomerate, other than the bonding mechanism, are the void ratio and the size of the particles from which it is composed. A number of empirical relationships have been used to correlate the effects of these variables. For example, eqn. (18) has been used [39] to represent the crushing strength of compressed tablets of constant size. 

Fig. 2.10. Theoretical tensile strength of agglomerates with various bonding mechanisms [1].

Abrasion resistance, 35 Agglomerate bonding and strength, see Bonding mechanisms... 

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