Extraction of alumina from Iraqi colored kaolin by lime-sinter process
Other Title(s)
استخلاص الألومينا من أطيان الكاوؤلين العراقية الملونة بطريقة التلبيد مع النوره
Joint Authors
al-Ujayl, Abd al-Wahhab Abd al-Razzaq
al-Tayyar, Suhayr Zakariyya
Abd al-Qadir, Maladh Qusayy
al-Halbusi, Muhammad Kassar
al-Jumayli, Falah Abd Allah
Muslim, Wasan A. K.
Source
Iraqi Bulletin of Geology and Mining
Issue
Vol. 10, Issue 3 (31 Dec. 2014), pp.109-117, 9 p.
Publisher
Ministry of Industry and Minerals Iraqi Geological Survey
Publication Date
2014-12-31
Country of Publication
Iraq
No. of Pages
9
Main Subjects
Earth Sciences, Water and Environment
Abstract EN
In this work lime -sinter method was investigated to recover alumina from Iraqi colored kaolinitic claystone.
The claystone was intimately mixed with limestone and the mixture was sintered.
The annealed sintered material dusts to a fine powder which required no grinding.
This material was leached with sodium carbonate solution, and an alumina extract (sodium aluminate solution) was obtained.
By bubbling carbon dioxide gas into this extract solution, gibbsite [Al(OH)3] precipitated and on calcinations at 1350 °C ,alumina in the form of alpha (α – Al2O3) of high purity (98%) can be obtained.
In the course of this investigation, the effect of sintering temperature and time, concentration of sodium carbonate solution, leaching time and sintered powder to sodium carbonate solution ratio were studied.
About 85% of the alumina in the claystone was extracted at the optimum conditions.
The alumina obtained in this method assaying 98% Al2O3, 1.45% SiO2, 0.04% Fe2O3, and 0.13% CaO and, 0.15% Na2O
American Psychological Association (APA)
al-Ujayl, Abd al-Wahhab Abd al-Razzaq& al-Tayyar, Suhayr Zakariyya& Muslim, Wasan A. K.& Abd al-Qadir, Maladh Qusayy& al-Halbusi, Muhammad Kassar& al-Jumayli, Falah Abd Allah. 2014. Extraction of alumina from Iraqi colored kaolin by lime-sinter process. Iraqi Bulletin of Geology and Mining،Vol. 10, no. 3, pp.109-117.
https://search.emarefa.net/detail/BIM-748136
Modern Language Association (MLA)
al-Ujayl, Abd al-Wahhab Abd al-Razzaq…[et al.]. Extraction of alumina from Iraqi colored kaolin by lime-sinter process. Iraqi Bulletin of Geology and Mining Vol. 10, no. 3 (2014), pp.109-117.
https://search.emarefa.net/detail/BIM-748136
American Medical Association (AMA)
al-Ujayl, Abd al-Wahhab Abd al-Razzaq& al-Tayyar, Suhayr Zakariyya& Muslim, Wasan A. K.& Abd al-Qadir, Maladh Qusayy& al-Halbusi, Muhammad Kassar& al-Jumayli, Falah Abd Allah. Extraction of alumina from Iraqi colored kaolin by lime-sinter process. Iraqi Bulletin of Geology and Mining. 2014. Vol. 10, no. 3, pp.109-117.
https://search.emarefa.net/detail/BIM-748136
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 117
Record ID
BIM-748136