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All Journal Teknologi Indonesia Metalurgi
Mufakhir, Fika Rofiek
Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada
Computer Science & IT Energy

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CHARACTERIZATION AND PROSPECTIVE PROCESS OF MANGANESE ORE OF TANGGAMUS AND WAY KANAN REGENCY LAMPUNG PROVINCE Mufakhir, Fika Rofiek; Sumardi, Slamet
Teknologi Indonesia Vol 37, No 1 (2014)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (16.051 KB) | DOI: 10.14203/jti.v37i1.216

Abstract

Manganese (Mn) has a very important role in various industrial fields such as iron, steel, food, agriculture and chemical industry. High grade Mn ore(>40%) are generally processed through the pyrometallurgy process, whereas for low grade Mn ore (<40%) is processed through the hydrometallurgical treatment process. This study aims to characterize the Mnore in Tanggamus and Way Kanan Regency Lampung Province and prospective process. Experiment begins with a sampling of the area in Tanggamus and Way Kanan mine. Sample preparation is then performed by reducing the particle size of the ore through the stages of crushing, grinding and particle size distribution. Mn ore sample which has been reduced then performed characterization using X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM). The results showed that the characteristics of Mn ore in Tanggamus and Way Kanan mine was different. Mn ore Tanggamus have the highest contentof 33.84% Mn associated with Fe2O3 minerals, while Mn ore Way Kanan had content 18.03% associated with SiO2 minerals. Both Mn ore are included in low grade Mn ore (<40). Prospective processing of manganese ore is initiated by benefitiation and proceed by leaching method.
STUDI KINETIKA PELINDIAN BIJIH MANGAN KADAR RENDAH DAERAH WAY KANAN LAMPUNG DENGAN MENGGUNAKAN MOLASES DALAM SUASANA ASAM Sumardi, Slamet; Mufakhir, Fika Rofiek; Prasetyo, Agus Budi
Metalurgi Vol 29, No 2 (2014): Metalurgi Vol.29 No.2 Agustus 2014
Publisher : Pusat Penelitian Metalurgi dan Material - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (485.099 KB) | DOI: 10.14203/metalurgi.v29i2.282

Abstract

STUDI KINETIKA PELINDIAN BIJIH MANGAN KADAR RENDAH DAERAH WAY KANANLAMPUNG DENGAN MENGGUNAKAN MOLASES DALAM SUASANA ASAM. Telah dilakukanpercobaan pelindian bijih mangan kadar rendah daerah Way Kanan Lampung dengan menggunakan molaseshasil limbah pabrik tebu dalam suasana asam sulfat. Percobaan ini dilakukan untuk mempelajari pengendali lajuproses dalam pelindian bijih mangan, nilai-nilai konstanta laju reaksi dan/atau konstanta difusi serta energiaktivasinya. Pelindian dilakukan dengan kondisi percobaan yang tetap untuk persen solid padatan 10%,kecepatan pengadukan 300 rpm, dosis pemberian molases sebanyak 80 g/L sedangkan suhu dan konsentrasiyang divariasikan. Studi kinetika diasumsikan dengan pendekatan Shrinking Core Model (SCM). Pelindian bijihmangan kadar rendah daerah Way Kanan Lampung dapat dilakukan dengan menggunakan molases sebagaipereduksi dan dalam medium asam sulfat. Hasil penelitian terhadap kinetika pelindian mangan denganmenggunakan molases sebagai agen pereduksi menunjukkan bahwa tahap pengendali laju pelindian adalah difusiproduk reaksi melalui inti yang tidak bereaksi dengan energi aktivasi sebesar 3,73 kkal/mol.
Co-Authors Prasetyo, Agus Budi Slamet Sumardi, Slamet