الفهرس Only 14 pages are availabe for public view
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Abstract
First of all, I would like to thank my supervisors, Prof. Dr. M.F. El-Shahat, Prof. of Analytical and inorganic chemistry, Faculty of Science, Ain Shams University, Prof. Dr. A. K. Ismail, Deputy of Central Metallurgical R& D Institute (CMRDI), Prof. Dr. M.S. Ahmed, Prof. of material science and metallurgy, Faculty of Petroleum and Mining Engineering, Suez Canal University and Prof. Dr. I.A.Ibrahim, Head of Hydrometallurgy Laboratory, CMRDI, for their generous guidance, fruitful discussions, valuable suggestions and supervision, in particular , for their encouragement enthusiasm and support throughout this work.