Ekstraksi Alumina dari Red Mud Menggunakan Separasi Magnetik

Istiqomah, Zahrotul (2016) Ekstraksi Alumina dari Red Mud Menggunakan Separasi Magnetik. Undergraduate thesis, Institut Teknology Sepuluh Nopember.

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Abstract

Ekstraksi alumina dari red mud dilakukan melalui 3 tahapan yaitu : penambahan Na2CO3 (natrium karbonat), reduksi karbon dan pemisahan secara magnetik. Tahap pertama penambahan Na2CO3 ke dalam red mud sebanyak 12 % kemudian di oven selama 4 jam. Tahap kedua reduksi karbon menggunakan batu bara yang dicampurkan ke dalam sampel tahap 1 dengan rasio 3 batu bara : 1 red mud + Na2CO3, selanjutnya di roasting dengan variasi suhu 850 °C, 950 °C, 1050 °C dan variasi waktu masing-masing suhu 1, 2, 3 jam. Tahap ketiga pemisahan secara magnetik, fasa magnetik dan non magnetik dikarakterisasi menggunakan XRD dan SEM EDX. Selanjutnya fasa non magnetik dilindi menggunakan HCL 6 N kemudian dianalisis kadar Aluminium dengan ICP. Kadar alumina tertinggi 20,66% pada suhu 1050 °C dan waktu 2 jam. ============================================================================================================= The extraction of alumina from red mud has been investigated by magnetic separation through several stages, namely, the addition of 12% wt/wt Na2CO3, the reduction of carbon using coal with ratio of carbon + Na2CO3 and coal of 1:3. The samples were roasted in various temperatures of 850 °C, 950 °C, 1050 °C and various times of 1, 2, 3 hours. Magnetic separation was carried out to remove magnetite that produced during roasting. Magnetic and non-magnetic phase were characterized using XRD and SEM EDX. The non magnetic phase obtained was leached using HCl 6N and aluminium content was determined by ICP. The ICP results revealed that the highest alumunium oxide content extracted from the samples was 20,66% wt/wt reached at extraction condition of 1050 °C for 2 h

Item Type: Thesis (Undergraduate)
Additional Information: RTKi 541.372 4 Ist e
Uncontrolled Keywords: red mud, pemisahan magnetik, pelindian, alumina
Subjects: Q Science > QD Chemistry > QD553 Electrochemistry. Electrolysis
Divisions: Faculty of Mathematics and Science > Chemistry > 47101-(S2) Master Thesis
Depositing User: Mr. Tondo Indra Nyata
Date Deposited: 15 Jan 2020 01:56
Last Modified: 15 Jan 2020 01:59
URI: http://repository.its.ac.id/id/eprint/72676

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