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.
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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: | 29 Apr 2024 01:12 |
| URI: | http://repository.its.ac.id/id/eprint/72676 |
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