DANYEL, DANYEL (2035) EKSTRAKSI BESI DARI SISA HASIL PENGOLAHAN NIKEL LATERIT DENGAN METODE ACID LEACHING. S1 thesis, Fakultas Teknik Universitas Sultan Ageng Tirtayasa.
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Abstract
The disposal of processing residues (SHP) is a by-product of nickel limonite processing using the high pressure acid leaching method. Currently, to handle SHP is to pile it up on ex-mining land, store it in ponds or dams, and place it on the seabed. This activity has the potential to pollute the environment if carried out continuously, so efforts need to be made to utilize SHP. SHP can be utilized because it contains 38% Fe and in the current era of energy transition it also has the potential to be a source of iron for making LFP batteries. This research carried out Fe extraction from SHP nickel limonite using the acid leaching method which aims to determine the effect of the pre-treatment process on Fe levels and the removal of impurities as well as determining the best conditions and controlling the rate of the acid leaching process. Before the leaching process, 2 different pre-treatments were carried out, namely magnetic separation and reverse leaching [HCl] 0.5 and 1.5 M. Then each concentrate and residue from the pre-treatment was continued with an acid leaching process using oxalic acid. The research variables in the acid leaching process are temperature (55; 65; 75; 85; 95 ℃) and time (30; 60; 90; 120; 150 minutes). The research results showed that the two pre-treatment processes carried out were not effective in increasing Fe levels or reducing impurity levels. Apart from that, the highest extraction percentage was obtained at 46.41% from the leaching process through pre-treatment reverse leaching [HCl] 0.5 M at a temperature of 95 ℃ for 120 minutes and it was known that the acid leaching process rate was controlled through magnetic separation pre-treatment and reverse leaching. [HCl] 0.5 and 1.5 M is intermediate controlled.
| Item Type: | Thesis (S1) | |||||||||
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| Additional Information: | Sisa hasil pengolahan (SHP) merupakan produk samping hasil pengolahan nikel limonit dengan metode high pressure acid leaching. Saat ini yang dilakukan dalam menangani SHP adalah dengan menimbunnya pada lahan bekas tambang, menampung dalam kolam atau dam, serta menempatkannya di dasar laut. Kegiatan ini berpotensi mencemari lingkungan bila dilakukan secara terus-menerus sehingga perlu diupayakan pemanfaatan SHP. SHP dapat dimanfaatkan karena mengandung Fe dengan kadar 38% dan di era transisi energi saat ini juga berpotensi sebagai sumber daya besi pada pembuatan baterai LFP. Penelitian ini melakukan ekstraksi Fe dari SHP nikel limonit dengan metode acid leaching yang bertujuan untuk mengetahui pengaruh proses pre-treatment terhadap kadar Fe dan penghilangan unsur pengotor serta menentukan kondisi terbaik dan pengendali laju proses acid leaching. Sebelum proses leaching, dilakukan 2 pre-treatment yang berbeda yaitu magnetic separation dan reverse leaching [HCl] 0,5 dan 1,5 M. Kemudian masing-masing konsentrat dan residu hasil pre-treatment dilanjutkan dengan proses acid leaching menggunakan asam oksalat. Variabel penelitian pada proses acid leaching ialah temperatur (55; 65; 75; 85; 95 ℃) dan waktu (30; 60; 90; 120; 150 menit). Hasil penelitian menunjukkan kedua proses pre-treatment yang dilakukan tidak efektif untuk meningkatkan kadar Fe maupun mengurangi kadar pengotor. Selain itu didapatkan persen ekstraksi tertinggi sebesar 46,41% dari proses leaching melalui pre-treatment reverse leaching [HCl] 0,5 M pada temperatur 95 ℃ selama 120 menit serta diketahui pengendali laju proses acid leaching melalui pre-treatment magnetic separation serta reverse leaching [HCl] 0,5 dan 1,5 M ialah intermediate controlled. | |||||||||
| Subjects: | T Technology > TN Mining engineering. Metallurgy | |||||||||
| Divisions: | 03-Fakultas Teknik 03-Fakultas Teknik > 27201-Jurusan Teknik Metalurgi |
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| Depositing User: | Mr Danyel Danyel | |||||||||
| Date Deposited: | 23 Jul 2024 10:12 | |||||||||
| Last Modified: | 23 Jul 2024 10:12 | |||||||||
| URI: | http://eprints.untirta.ac.id/id/eprint/39202 |
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