Studi Pengaruh Bentuk Briket Terhadap Kadar Serta Recovery Ni Dan Fe Dalam Proses Reduksi Langsung Bijih Nikel Laterit Limonitik

Ridarto, Afif Maulana Yusuf (2022) Studi Pengaruh Bentuk Briket Terhadap Kadar Serta Recovery Ni Dan Fe Dalam Proses Reduksi Langsung Bijih Nikel Laterit Limonitik. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Reduksi Langsung merupakan salah satu metode yang digunakan pada ekstraksi Nikel dari nikel laterit limonitik. Briket menjadi bagian penting dalam reduksi langsung. Penelitian ini meneliti bentuk briket yang sesuai untuk mencapai kadar serta Recovery Ni dan Fe, faktor selektivitas dan menganalisis senyawa yang terbentuk. Briket dalam penelitian ini dibuat dengan variasi bentuk pillow, spherical, dan cylindrical. Penelitian ini dilakukan dengan mencampurkan bahan yang sudah disiapkan kemudian dikompaksi membentuk briket. Setelah itu dimasukkan ke dalam crucible dan ditambahkan campuran bed batubara-limestone dan dimasukkan ke dalam muffle furnace. Kemudian reduksi langsung dimulai dengan pemanasan 700oC selama 2 jam dan dilanjutkan 1400oC selama 6 jam dan dilanjutkan separasi magnetik, lalu penimbangan produk reduksi. Hasil produk diuji dengan SEM-EDX untuk mengetahui kadar dan XRD untuk mengetahui senyawa yang terbentuk dimana didapatkan hasil optimal pada variasi cylindrical dengan kadar Ni sebesar 6,74%, Recovery Ni sebesar 96,20% dengan faktor selektivitas 10,39. Senyawa yang ditemukan pada produk reduksi meliputi FeNi, Fe3Si, SiO2, Fe3O4 dan MgSiO4 yang menandakan proses reduksi yang kurang sempurna
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Direct reduction is one of the methods used in nickel extraction from limonitic nickel laterite. Briquettes become an important part of direct reduction. This research examines the appropriate shape of briquettes to achieve the concentration and Recovery of Ni and Fe, selectivity factors and analyze the compounds formed. The briquettes in this study were made with shape variation of pillow, spherical, and cylindrical. This research was carried out by mixing the prepared materials and then compacting them to form briquettes. After that, it is put into a crucible and the coal-limestone bed mixture is added and put into the muffle furnace. Then the direct reduction was started by heating at 700oC for 2 hours and continued at 1400oC for 6 hours and continued with magnetic separation, then weighing the reduction products. The product results were tested with SEM-EDX to determine the content and XRD to determine the compounds formed where optimal results were obtained at shape variation of cylindrical with a Ni content of 6,74%, Ni Recovery of 96,20% with a selectivity factor of 10,39. The compounds found in the reduction products include FeNi, Fe3Si, SiO2 and Fe3O4 and Mg2SiO4 which indicate an incomplete reduction process

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Bentuk Briket, Kadar Nikel, Laterit Limonit, Recovery Nikel, Reduksi Langsung
Subjects:	T Technology > TN Mining engineering. Metallurgy > TN689+ Physical metallurgy T Technology > TN Mining engineering. Metallurgy > TN799.N6 Nickel--Metallurgy
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Afif Maulana Yusuf Ridarto
Date Deposited:	17 Feb 2022 03:39
Last Modified:	17 Feb 2022 03:39
URI:	http://repository.its.ac.id/id/eprint/94149

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