شماره مدرك :
4851
شماره راهنما :
4555
پديد آورنده :
خليل زاده، رسول
عنوان :

برسي شرايط بهينه فرايند ليچينگ در استحصال روي از گردو غبار كوره هاي برنج ريزي به روش هايدرومتالوژي و حذف كلر

مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
استخراج فلزات
محل تحصيل :
اصفهان:دانشگاه صنعتي اصفهان،دانشكده مواد
سال دفاع :
1388
صفحه شمار :
ده،85ص.:مصور،جدول،عكس،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
مهدي احمديان
استاد مشاور :
مرتضي شمعانيان،محمد سراجي
توصيفگر ها :
استخراج روي , مواد ثانويه , اسيدسولفوريك , تشويه
تاريخ نمايه سازي :
24/9/88
استاد داور :
حسين ادريس،علي شفيعي
دانشكده :
مهندسي مواد
كد ايرانداك :
ID4555
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
Removing of Chlorine and Recovery of Zinc from Brass Smelting Furnace Dust by Roasting and Leaching Rasoul Khalil zadeh r a khalil@yahoo com Date of Submission 2009 09 13 Department of Materials Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor Mehdi Ahmadian ahmadian@cc iut ac ir Abstract Zinc is one of the non ferrous metals which has considerable applications in a variety of industries due to its unique properties Zinc can be extracted from oxide and sulfide minerals using thermal and wet processes Nowadays production of Zinc by hydrometallurgical process is extending owing to the advantages of this method In addition to Zinc production from its concentrate recovery of Zinc from secondary Zinc rich resources such as wastes brass melting slag flue dust of industrial processes non ferrous and automobile scraps is also promising Accumulation of these materials in the nature in addition to economical outcomes cause environmental contamination Considering these resources Zinc extraction is highly important Brass furnace flue dust is one of the mentioned secondary resources In this study Zinc extraction from these dusts was investigated to determine the optimum conditions In this work leaching process with sulfuric acid was applied The parameters studied in leaching process were acid concentration pulp density stirring rate and temperature Moreover in order to remove Cl as a harmful impurity from mentioned dusts method of roasting was used The obtained results of leaching experiments showed that sulfuric acid concentration significantly effects on the amount of Zinc recovery so that at concentration of 1 molar after 9 minutes only more than 98 of Zinc was recovered Increase in the rate of stirring had considerable effect on reducing the time required for maximum Zinc extraction Optimum values for stirring rate and pulp density were determined to be 1250 rpm and 0 1g cm3 respectively Temperature had negligible effect on leaching efficiency In Cl elimination experiments using roasting of dusts the effect of roasting time and temperature were examined Following these experiments it was concluded that temperature of 950 0C for 60 minutes resulted in diminishing of Cl content to below 100 ppm Additionally it was found that diffusion controlled kinetic model was dominating on leaching process Using leaching and roasting processes under optimized conditions more than 98 of Zinc from dusts can be extracted with maximum Cl removal Keywords Zinc extraction Secondary materials Hydrometallurgy Leaching Sulfuric acid Roasting pdfMachine A pdf writer that produces quality PDF files with ease Produce quality PDF files in seconds and preserve the integrity of your original documents Compatible across nearly all Windows platforms simply open the document you want to convert click print select the Broadgun pdfMachine printer and that s it Get yours now
استاد راهنما :
مهدي احمديان
استاد مشاور :
مرتضي شمعانيان،محمد سراجي
استاد داور :
حسين ادريس،علي شفيعي
لينک به اين مدرک :

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