Studi Pengaruh Tekanan Kompaksi Briket Terhadap Kadar Serta Recovery Ni dan Fe pada Reduksi Langsung Bijih Nikel Laterit Limonitik

Rare, Frederick Geovan Liris Limbong (2021) Studi Pengaruh Tekanan Kompaksi Briket Terhadap Kadar Serta Recovery Ni dan Fe pada 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 tekanan kompaksi briket yang sesuai untuk mencapai kadar serta Recovery Ni dan Fe, faktor selektivitas yang optimal serta menganalisis senyawa yang terbentuk. Briket dalam penelitian ini dibuat dengan tekanan 20 kgf/cm2, 30kgf/cm2, 40kgf/cm2 dan 50kgf/cm2. 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 30Kgf dengan kadar Ni sebesar 5,00%, Recovery Ni sebesar 86,76% dengan faktor selektivitas 4,72. Senyawa yang ditemukan pada produk reduksi meliputi FeNi, Fe3Si, SiO2 serta FeO dan MgSiO4 yang menandakan proses reduksi yang kurang sempurna=============================================================================================
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 compaction pressure of briquettes to achieve the optimum concentration, Recovery of Ni and Fe and selectivity factors, also analyze the compounds formed. The briquettes in this study were made at a pressure of 20 kgf/cm2, 30kgf/cm2, 40kgf/cm2 and 50kgf/cm2. 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 variations of 30Kgf/cm2 with a Ni content of 5,00%, Ni Recovery of 86,76% with a selectivity factor of 4,72. The compounds found in the reduction products include FeNi, Fe3Si, SiO2 and FeO and MgSiO4 which indicate an incomplete reduction process.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Briket, Reduksi langsung, Nikel, Tekanan Kompaksi. Briquettes, Direct Reduction, Nickel, Compaction Pressure
Subjects:	T Technology > TN Mining engineering. 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:	Frederick Geovan Liris Limbong Rare
Date Deposited:	13 Aug 2021 22:11
Last Modified:	13 Aug 2021 22:11
URI:	http://repository.its.ac.id/id/eprint/86045

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