Calcination of gibbsite: M38-8/116E-PDF
"Data are presented showing the changes in physical properties which occur during the calcination of Bayer-process gibbsite at temperatures up to 1400°C. The various stages of the calcination were examined using differential thermal analysis, X-ray diffraction, low-temperature nitrogen adsorption, optical and electron microscopy, and particle-size distribution analyses. The morphology of the gibbsite aggregates was found to be unchanged up to ~ 1100°C, despite the development of several intermediate metastable phases. At higher temperatures, the original gibbsite pseudomorphs become microporous coincident with the development of finely divided alpha-alumina which is formed in a strain-free state. The crystal size and pore size increase with temperature between 1100 and 1400°C. The influence of the parent gibbsite structure on the morphology of the alpha-phase material is demonstrated in scanning-electron micrographs. The effect of various parameters on the milling of high-temperature calcines is also discussed"--Abstract, p. 43.
|Department/Agency||Natural Resources Canada. Dept. of Energy, Mines and Resources. Mines Branch.|
|Title||Calcination of gibbsite|
|Series Title||Reprint series ;|
|Publication Type||Series - View Master Record|
|Electronic Document|| |
Information identified as archived is provided for reference, research or recordkeeping purposes. It is not subject to the Government of Canada Web Standards and has not been altered or updated since it was archived. Please contact the authoring department to request a format other than those available.
We invite you to consult the Frequently Asked Questions page for additional information regarding the Archived Content notice.
Note: The URLs contained in this/these document(s) may no longer be functional
|Note||Cover title. "Reprinted from the Journal of the Canadian Ceramics Society, (1971), vol. 40, pp. 43-48." Historical publication digitized from print 2017 [by Natural Resources Canada].|
|Number of Pages||p. 43-48 :|
|Departmental Catalogue Number||300195|
|Subject Terms||Ceramics, Minerals, Processing|
- Date modified: