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Musnajam Musnajam
Teknik Pertambangan, Fakultas Sains Dan Teknologi, Universitas Sembilanbelas November Kolaka,
Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Earth & Planetary Sciences Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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KARAKTERISTIK MINERALOGI ENDAPAN NIKEL LATERIT DI DAERAH TAMBANG TENGAH (BUKIT TLA2) PT. ANTAM Tbk. UBP NIKEL POMALAA SULTRA -, Musnajam
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 3 No 2 Februari 2011
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2324.159 KB) | DOI: 10.34151/technoscientia.v3i2.482

Abstract

This research is aimed to understand the mineralogy of nickel laterite deposit and geochemistry of ultramafic rock, the samples were taken from 14 drilling holes The data is analyzed to conduct weathering geochemical profile to identify lateritization, laterite profile development, characteristics and elements enrichment process in weathering zones. Lithology of the study area is composed by dunite and lherzolite, That dominated by livine, pyroxene and serpentine, also opaque minerals such as chromite and magneti-te with small percentage. Based on X-Ray Diffraction analysis known that the clay mine-rals are chlorite, clinochlore, kaolinite, and dyckite. Based on geochemical analyzes, the mineralogy characteristics of study area showing the different behavior for each element, due to the weathering rate and the dept of cores. The different behavior each element during weathering process determined by different element chemical mobility, forming minerals resistance, weathering intensity and jointing process.
OPTIMALISASI PEMANFAATAN BIJIH NIKEL KADAR RENDAH DENGAN METODE BLENDING DI PT. ANTAM Tbk. UBPN SULTRA -, Musnajam
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 4 No 2 Februari 2012
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (457.296 KB) | DOI: 10.34151/technoscientia.v4i2.517

Abstract

Nickel ore is in the region Pomalaa, including the type formed by lateritic weathering of ultramafic rocks (peridotite, serpentine) mineral-rich olivine ((Mg, Fe) 2SiO4) and piroksin (AB Si2O6), The study was conducted to determine the handling and utilization of low grade nickel ore is carried out by PT Antam Tbk. UBPN Southeast Sulawesi. From the research, found that the amount of tonnage of low grade nickel ore (COG <1.8% Ni) compared with high-grade nickel ore (COG> 1.8% Ni). It requires handling as well as on the optimal utilization of low grade nickel ore, which in turn will support the survival of the company.
KARAKTERISTIK MINERALOGI ENDAPAN NIKEL LATERIT DI DAERAH TAMBANG TENGAH (BUKIT TLA2) PT. ANTAM Tbk. UBP NIKEL POMALAA SULTRA -, Musnajam
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 3 No 2 Februari 2011
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v3i2.482

Abstract

This research is aimed to understand the mineralogy of nickel laterite deposit and geochemistry of ultramafic rock, the samples were taken from 14 drilling holes The data is analyzed to conduct weathering geochemical profile to identify lateritization, laterite profile development, characteristics and elements enrichment process in weathering zones. Lithology of the study area is composed by dunite and lherzolite, That dominated by livine, pyroxene and serpentine, also opaque minerals such as chromite and magneti-te with small percentage. Based on X-Ray Diffraction analysis known that the clay mine-rals are chlorite, clinochlore, kaolinite, and dyckite. Based on geochemical analyzes, the mineralogy characteristics of study area showing the different behavior for each element, due to the weathering rate and the dept of cores. The different behavior each element during weathering process determined by different element chemical mobility, forming minerals resistance, weathering intensity and jointing process.
OPTIMALISASI PEMANFAATAN BIJIH NIKEL KADAR RENDAH DENGAN METODE BLENDING DI PT. ANTAM Tbk. UBPN SULTRA -, Musnajam
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscientia Vol 4 No 2 Februari 2012
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v4i2.517

Abstract

Nickel ore is in the region Pomalaa, including the type formed by lateritic weathering of ultramafic rocks (peridotite, serpentine) mineral-rich olivine ((Mg, Fe) 2SiO4) and piroksin (AB Si2O6), The study was conducted to determine the handling and utilization of low grade nickel ore is carried out by PT Antam Tbk. UBPN Southeast Sulawesi. From the research, found that the amount of tonnage of low grade nickel ore (COG <1.8% Ni) compared with high-grade nickel ore (COG> 1.8% Ni). It requires handling as well as on the optimal utilization of low grade nickel ore, which in turn will support the survival of the company.
PELINDIAN BIJIH NIKEL LATERIT KADAR RENDAH MENGGUNAKAN METODE ATMOSPHERIC ACID LEACHING DALAM MEDIA ASAM KLORIDA (HCL) Dian Permana; Rizky Kumalasari; Wahab Wahab; Musnajam Musnajam
JURNAL RISET GEOLOGI DAN PERTAMBANGAN Vol 30, No 2 (2020)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/risetgeotam2020.v30.1097

Abstract

Ekstraksi nikel laterit menggunakan metode hidrometalurgi lebih efisien dari segi konsumsi energi dengan lebih sedikit gas buang dibandingkan dengan metode pirometalurgi. Hal ini menyebabkan nikel laterit berkadar rendah dapat diekstraksi lebih banyak menggunakan metode hidrometalurgi. Salah satu metode hidrometalurgi dalam mengekstraksi nikel dari bijih nikel laterit adalah Atmospheric Acid Leaching. Penelitian ini bertujuan untuk memperoleh data persentase perolehan nikel, menentukan variabel yang paling berpengaruh dan menentukan kondisi optimum dalam proses pelindian. Pada penelitian ini dilakukan variasi pada faktor-faktor yang berpengaruh dalam proses leaching yakni temperatur, konsentrasi asam dan waktu pelindian. Analisis kandungan nikel hasil pelindian dilakukan menggunakan Atomic Adsorbtion Spectroscopy (AAS). Hasil penelitian menunjukkan bahwa persentase perolehan nikel terendah adalah 9,40% Ni dan tertinggi 75,76% Ni. Perhitungan ANOVA digunakan untuk menentukan faktor paling berpengaruh pada proses pelindian nikel laterit. Faktor yang paling berpengaruh dalam penelitian ini adalah temperatur (B), diikuti konsentrasi asam (A), waktu pelindian (C), interaksi konsentrasi-temperatur (AB), interaksi temperatur-waktu (BC), interaksi konsentrasi-waktu (AC) dan interaksi konsentrasi-temperatur-waktu (ABC). Kondisi optimum pelindian diperoleh pada kondisi temperatur 75°C, konsentrasi asam 2,9-3 Molar dalam waktu 69-70 menit dengan perolehan nikel >70%. ABSTRACT -  Leaching of Low-Grade Nickel Laterite Ore Using Atmospheric Acid Leaching Method in Hydrochloric Acid. Nickel laterite extraction using the hydrometallurgical method is more efficient in energy consumption with less exhaust gas than the pyrometallurgical method. This method causes the extraction of low-grade nickel laterite ore using hydrometallurgy could be more effective. One of the hydrometallurgical methods to extract nickel from its ore is atmospheric acid leaching. This research aims to determine the percentage of nickel recovery through the leaching process, determine the most influenced leaching factor, and determine the optimum leaching condition. The main factors that influence the leaching process are temperature, acid concentration, and leaching time. Atomic adsorption spectroscopy was chosen to analyze the leaching solution. This research showed that the lowest recovery of nickel leaching was 9,40% of Ni, and the highest was 75,76% of Ni. Analysis of variance (ANOVA) was used to determine the most influenced factor of leaching. The most influenced factor was the temperature (B), followed by acid concentration (A), duration (C), the interaction of acid concentration-temperature (AB), the interaction of temperature-duration (BC), the interaction of acid concentration-duration (AC), and interaction of acid concentration-temperature-duration (ABC). The optimum leaching condition is at 75°C of temperature, 2,9-3 molar of acid concentration, in 69-70 minutes of duration, which has >70% of Ni recovery.
The Facies and Metamorphism Types Determination of Metamorphic Rock in The Part of Mekongga Complex M. Musnajam; Ahmad Tarmidzi Abd Karim; N. Nurfadillah; Fahrudi Ahwan Ikhsan; Andri Estining Sejati
Geosfera Indonesia Vol 5 No 2 (2020): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v5i2.17340

Abstract

Lambolemo Village is geomorphologically dominated by hilly slopes morphology. Lithology in the form of metamorphic rocks are mica schists and chlorite schists. The present research aimed to determine the facies and metamorphism types of metamorphic rocks in Lambolemo Village. The research methods engaged were field observation and laboratory observation utilizing petrographic analysis. Observations stage generated texture data and set of mineral both macroscopically and microscopically. The minerals were discovered within metamorphic rock of the research area, namely: muscovite, quartz, biotite, and chlorite. These findings then classified into two zones, there were chlorite zone and biotite zone. These zones were embodied into greenschist facies with chlorite mineral index. The greenschist facies was characterized with chlorite, albit, epidote, and actinolite minerals appearance. The metamorphic rock had a foliation structure. The structure was commonly generated by a regional metamorphic process, which was particularly a feature of the clear alignment, translucent minerals from flat minerals, such as : mica, chlorite and minerals that obtained fibers or scents. Keywords: Determination; Facies; Metamorfism Type Copyright (c) 2020 Geosfera Indonesia Journal and Department of Geography Education, University of Jember This work is licensed under a Creative Commons Attribution-Share A like 4.0 International License
Co-Authors Ahmad Tarmidzi Abd Karim Andri Estining Sejati Dian Permana Fahrudi Ahwan Ikhsan N. Nurfadillah Rizky Kumalasari Wahab Wahab