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