NDLI: Mineral processing and extraction of rare earth elements from the Wadi Khamal Nelsonite Ore, Northwestern Saudi Arabia

Content Provider	Springer Nature Link
Author	Harbi, Hesham M. Eldougdoug, Abdelmonem A. El Shahawi, M. S.
Copyright Year	2009
Abstract	A technological sample (50 kg) from Wadi Khamal Nelsonite ore was subjected to magnetic and flotation concentration techniques. Excellent recovery percentages of 72.95% and 71.22% were achieved by the dry/wet magnetic and flotation concentration techniques, respectively. The weight of the apatite concentrate reached a reasonable percentage of approximately 23.5% with an overall 40.23% P$_{2}$O$_{5}$ total content. Analytical data of the apatite concentrate after digestion in concentrated sulfuric acid revealed that the total content of the rare earth elements (REE) constitutes about 0.2% of the total apatite content. The REE content (0.2%) was partitioned between phosphoric acid liquor (65%) and gypsum precipitate (36%). The extraction of the REEs from the phosphoric acid liquor using oxalic acid and sodium carbonate–bicarbonate mixture (1:10 w/w) yielded the RE oxide cake which constitute about 1.2% (w/w). The produced rare earth oxide cake contains traces of various metal oxides, e.g., SrO, Na$_{2}$O, etc. in addition to rare earth oxides. Attempts to determine quantitatively the constituents of the cake will be considered in future work.تم دراسة وتركيز عينة تكنولوجية (50 كجم) من خام النلسونيت المتواجد في منطقة وادي خمال، شمال غرب المملكة العربية السعودية بإسستخدام طريقتي التعويم والفصل المغناطيسي. ووجد أن التركيز المغناطيسي (الجاف/الرطب) يعطي أفضل استخلاص للاباتيت (w/w %72.95) وكذلك أعلى كفاءة في الفصل (% 71.22 w/w) ويشكل ركاز الاباتيت حوالي (23.5%) ويحتوي على 40.23% من خامس أكسيد الفسفور.تم أيضا إذابة ركاز الأباتيت في حامض الكبريتيك المركز وتحليل تركيزات العناصر ألأرضية النادرة باستخدام جهاز البلازما-الانبعاث الذرى(Inductive Coupled Plasma- Optical Emission Spectrometry) ولقد أوضحت النتائج أن محتوى الأباتيت من العناصر الأرضية النادرة حوالي 0.2% وهذه النسبة تتوزع بين حامض الفوسفوريك - 65% w/w)) وراسب الجبس 36% w/w).كما تم استخلاص العناصر الأرضية النادرة من حامض الفوسفوريك بالترسيب وذلك بإستخدام حامض الاوكساليك وخليط من كربونات وبيكربونات الصوديوم. تم الحصول على عجينة أكاسيد العناصر الأرضية النادرة والتي تشكل حوالي 1.2% بالوزن. تحتوي هذه العجينة على بعض أكاسيدالعناصر الأخرى مثل الاسترونشيوم والصوديومبالإضافة إلى أكاسيد العناصر الأرضية النادرة والتي لم يتم تحديد كلا منها كمياً.
Starting Page	353
Ending Page	363
Page Count	11
File Format	PDF
ISSN	18667511
Journal	Arabian Journal of Geosciences
Volume Number	4
Issue Number	3-4
e-ISSN	18667538
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-08-13
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Rare earth elements Saudi Arabia Mineral processing Phosphoric acid liquor Gypsum precipitate Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Environmental Science

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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