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Journal of Mining and Environment، جلد ۶، شماره ۱، صفحات ۱۰۳-۱۰۸
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عنوان انگلیسی Iron leaching from bauxite ore in hydrochloric acid using response surface methodology
چکیده انگلیسی مقاله In this work, hydrochloric acid is used to remove iron impurities in the bauxite ore contained in the diasporite mineral located in the Sari region. The bauxite ore was calcined at different temperatures and times, and then dissolved in a hydrochloric acid solution. After determining the optimum calcination conditions in 1 h at 900 °C, the response surface methodology (RSM) with four factors in five levels was employed in order to evaluate the effects of calcination temperature, calcination time, acid concentration, and leaching time on the iron leaching efficiency. A quadratic model is proposed using this methodology to correlate the leaching variables. The test results indicate that the model is consistent with the experimental data, and that the most important varriables involved are the acid concentration, leaching time, and squared term of calcination temperature (A2). The maximum iron recovery was 94.97%, and the Fe grade in the solids remained was 2.35% at the calcination temperature of 900 °C, a calcination time of 1 hour, and a leaching time of 2 h in hydrochloric acid (6 mM).
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نویسندگان مقاله صغری صالحی |
department of mining engineering, science and research branch, islamic azad university, tehran, iran
سازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (Islamic azad university science and research branch)

m نوع پرست |
school of mining engineering, college of engineering, university of tehran, tehran, iran
سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

سیده زهرا شفایی | s z
school of mining engineering, college of engineering, university of tehran, tehran, iran.
سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

a امینی |
head of mineral processing division, geology amp;amp; exploration organization of iran, tehran, iran.

a حیدرنیا |
school of mining engineering, college of engineering, university of tehran, tehran, iran.
سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)

نشانی اینترنتی http://jme.shahroodut.ac.ir/article_363_7e580d4a6e68da367d7f6aa2b4d8d5ac.pdf
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