کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9632610 | 462125 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Leaching kinetics of Panzhihua ilmenite in sulfuric acid
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Leaching kinetics of Panzhihua ilmenite in sulfuric acid Leaching kinetics of Panzhihua ilmenite in sulfuric acid](/preview/png/9632610.png)
چکیده انگلیسی
About 90% of the titanium deposits in China are located in the Panzhihua area. The dissolution of Panzhihua ilmenite in sulfuric acid was investigated. The kinetic experiments were carried out with an initial acid/ilmenite (wt.) ratio of 500:15, a sulfuric acid concentration of 15.4 M and temperatures from 100 to 198 °C. The results show that the leaching kinetics can be described by shrinking core model. Both surface reaction and diffusion through the product layer are effective on the leaching rate. The kinetics can be expressed by the following equation:t=[0.00766/(2.74Ã107eâ72575/Râ¢T)][1â(1âx)1/3]{1+(11â0.016â¢T)[1+(1âx)1/3â2(1âx)2/3]}The apparent activation energy was estimated to be 72.6 kJ/mol. This kinetic relationship was used to simulate non-isothermal and the pseudo-adiabatic experiments under industrial conditions. The simulated values were consistent with the experimental data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hydrometallurgy - Volume 76, Issues 3â4, March 2005, Pages 173-179
Journal: Hydrometallurgy - Volume 76, Issues 3â4, March 2005, Pages 173-179
نویسندگان
Bin Liang, Chun Li, Chenggang Zhang, Yongkui Zhang,