A study on up-grading the copper sulphide ore by flotation Hofrat En Nahas, Southern Sudan

العناوين الأخرى

دراسة عن تركيز خام النحاس الكبريتيدى بالتعويم بمنطقة حفرة النحاس-غربي السودان

مقدم أطروحة جامعية

Abd Allah, Qurashi Zayn al-Abidin

مشرف أطروحة جامعية

Sayf al-Nasr, Ahmad Abd Allah Sadiq

الجامعة

جامعة أم درمان الإسلامية

الكلية

كلية العلوم الهندسية

القسم الأكاديمي

قسم هندسة التعدين

دولة الجامعة

السودان

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2005

الملخص الإنجليزي

This thesis deals with the processing of Hofrat En Nahas copper sulphide ore, which is considered as one of the largest copper deposits in Sudan.

Mineralogical examinations indicated that, the main valuable copper mineral present in that particular ore is chalcopyrite which is associated mostly with pyrite.

Other copper sulphides such as bornite, covellite and chalcocite were identified in trace quantities.

The gangue minerals are mainly feldspar, quartz and calcite.

Adequate degree of liberation of copper sulphide minerals was obtained by grinding the ore to minus 150µm.

In addition, the mineralogical investigation revealed that the chalcopyrite mineral surface has been subjected to oxidation or alteration.

Froth flotation was used to upgrade that particular copper ore.

Potassium amyl xanthate, sodium sulphide, and pine oil were used as collector, activator, and frother respectively.

Several operating parameters were studied.

These include the concentrations of the flotation reagents, conditioning time, pulp pH, and pulp density. Activation using sodium sulphide was found to be essential to improve the floatability of the copper sulphide minerals. Promising results were obtained at certain operating conditions.

From an ore feed grading 2.7%Cu,a copper concentrate of 20% Cu with recovery of 94.59 % was obtained by only one cleaning stage.

Based on the results obtained, a process flow sheet to upgrade that ore was suggested.

التخصصات الرئيسية

هندسة المواد والمعادن

الموضوعات

عدد الصفحات

91

قائمة المحتويات

Table of contents.

Abstract.

Chapter One : Introduction.

Chapter Two : Literature review.

Chapter Three : Materials and methods.

Chapter Four : Results and discussions.

Chapter Five : Conclusions.

References.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

Abd Allah, Qurashi Zayn al-Abidin. (2005). A study on up-grading the copper sulphide ore by flotation Hofrat En Nahas, Southern Sudan. (Master's theses Theses and Dissertations Master). Omdurman Islamic University, Sudan
https://search.emarefa.net/detail/BIM-373162

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

Abd Allah, Qurashi Zayn al-Abidin. A study on up-grading the copper sulphide ore by flotation Hofrat En Nahas, Southern Sudan. (Master's theses Theses and Dissertations Master). Omdurman Islamic University. (2005).
https://search.emarefa.net/detail/BIM-373162

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

Abd Allah, Qurashi Zayn al-Abidin. (2005). A study on up-grading the copper sulphide ore by flotation Hofrat En Nahas, Southern Sudan. (Master's theses Theses and Dissertations Master). Omdurman Islamic University, Sudan
https://search.emarefa.net/detail/BIM-373162

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-373162