| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 237727 | Powder Technology | 2011 | 6 Pages |
A new generation binder consisting of an organic binder and a borate salt was tested as an alternative to bentonite in magnetite ore pelletization. Carboxyl methyl cellulose (CMC), Ciba DPEP06-0007 and corn starch, and calcined colemanite were used as organic binders and the borate salt, respectively. They were added to the pellet feed separately and in different combinations at several addition levels. It was found that the use of organic binders is sufficient in terms of wet pellet quality; however, they fail to render the required compressive strength to pre-heated and fired pellets. Therefore, organic binders and calcined colemanite were used together so that wet pellets, pre-heated and fired pellets would be of the required quality. The results showed that the use of an organic binder together with calcined colemanite indeed yielded pellets with equal or better wet and indurated pellet qualities compared to the pellets produced with bentonite binder alone.
Graphical AbstractA new generation binder consisting of an organic binder (CMC, Ciba DPEP06-0007 or corn starch) and a borate salt (calcined colemanite) was tested as an alternative to bentonite in magnetite ore pelletization. The results showed that the use of an organic binder together with calcined colemanite yielded pellets with equal or better wet and indurated pellet qualities compared to the pellets produced with bentonite binder alone.Figure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights► Combination of an organic binder and a borate salt was tested as alternative to bentonite binder in magnetite ore pelletizing. ► Influence of the calcined colemanite added organic binders on the pellet strength were determined. ► The results showed that pellets produced with combined binders have superior green, pre-heated and fired pellets quality than the reference pellets made with standard bentonite binder. ► Increasing the calcined colemanite addition increases both pre-heated and fired pellet compressive strengths.
