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- W2048021254 abstract "The classically accepted mechanism for binding fine iron ore concentrates by bentonite clay is that the clay becomes hydrated, expands, disperses, and then dries into a bonding film that holds the iron ore particles together. However, bentonite has been observed to form a fibrous structure on the surface of foundry sands, which is relevant because foundry sands are produced under similar conditions to iron ore pellets. The classical bentonite binding mechanism cannot explain how bentonite fibers are formed. Is a more complete understanding of bentonite binding mechanisms important? How can the iron ore pellet industry benefit? In this paper, scanning electron microscopy was used to attempt to image bentonite fibers formed on the iron ore concentrate that composes the pellets. It was determined that bentonite fibers were not inherently formed during iron ore pellet production. Experimental methods were designed that allowed bentonite fibers to be developed and studied. The bentonite fiber mechanism has been developed into a new theory. Based on this theory, experiments conducted under conditions that would promote formation of bentonite fibers were found to be associated with an increase in bonding. Once the fundamentals of bentonite binding mechanisms are completely understood, what can be changed to improve the quality of iron ore pellets? Implications to improving iron ore pellets are discussed. How can this knowledge be used to benefit other industries that use bentonite as a binder?" @default.
- W2048021254 created "2016-06-24" @default.
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- W2048021254 date "2001-06-01" @default.
- W2048021254 modified "2023-10-14" @default.
- W2048021254 title "Developing and understanding the bentonite fiber bonding mechanism" @default.
- W2048021254 cites W1504193762 @default.
- W2048021254 cites W2058768892 @default.
- W2048021254 doi "https://doi.org/10.1016/s0892-6875(01)00056-5" @default.
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