CHARACTERIZATION AND THEORETICAL STUDY ABOUT MINERAL BENEFICIATION POTENCIAL OF WESTERN PACIFIC OCEAN SEAFLOOR SEDIMENT IN THE NORTH OF WEST PAPUA
Indonesian Institute of Science (LIPI), through Nusa Manggala Expedition, had identified trace of some metal elements with sufficient concentration in the sediment of western Pacific Ocean seafloor in the north of West Papua. However, sea sediment mining activity will haul various type of impurit...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/57796 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Indonesian Institute of Science (LIPI), through Nusa Manggala Expedition, had
identified trace of some metal elements with sufficient concentration in the sediment
of western Pacific Ocean seafloor in the north of West Papua. However, sea sediment
mining activity will haul various type of impurity minerals. As for that reason, study
about mineral beneficiation potential is necessary to investigate the possibility to
recover some of precious mineral concentrates from the sea sediment.
The sample used for this research is collected from the OS–07 gravity core which was
exploited through Nusa Manggala Expedition. Sieve analysis, cross-section
mineragraph, X–Ray Diffraction (XRD), X–Ray Fluorescence (XRF), and Scanning
Electron Microscope–Energy Dispersive Spectroscopy (SEM–EDS) had been done to
identify particle size distribution, minerals and metal elements composition along
with their distribution in the sea sediment. The research was continued by examining
some of the operational parameters which give some options of potential mineral
beneficiation methods to recover some of the precious mineral concentrates.
Characterization shows that most of the particles in the sea sediment has a size range
of 20–150 ?m. The particle coarseness differ for sample depthness of 0–180 cm and
180–246 cm with P80 respectively are 290.52 ?m and more than 300 ?m. The sea
sediment contain various types of potential precious mineral namely ankangite,
anatase, richetite, jacobsite, vuorelainenite, silver, and gold with a few trace of
sulphides complex mineral. Trace of some precious metal was also identified such as
Cd, Pd, Mo, Zr, Hf, Bi, Pt, and Sc. Precious minerals are indicated trapped in
muscovite–2M1 and quartz matrix. Based on the theoretical study results, grinding
can be done using a ball mill with estimated Bond work index of 18.781 kWh/ton.
Shaking table, centrifugal jig, and Humprey spiral can be used to recover all precious
mineral particles with size range of 20–150 ?m. High Gradient Magnetic Separator
(HGMS) and Low Intensity Magnetic Separator (LIMS) can be used to recover
jacobsite, vuorelainenite, and richetite concentrate. Heavy medium separator can be
used for HGMS tailing to concentrate sink fraction of gold and silver concentrate.
Flotation circuit can be used for the gravity concentration tailing to recover ankangite
and anatase concentrate. |
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