Analisis Perbandingan Kadar Nikel Berdasarkan Perencanaanterhadap Realisasi Penambangan

Pranata, Reynaldhi Yogi; Djamaluddin, Djamaluddin; Asmiani, Nur; Thamsi, Alam Budiman

doi:10.33536/jg.v5i3.146

Cited by 6 publications

(7 citation statements)

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“…Proses penambangan merupakan kegiatan yang bermula dari awal yaitu eksplorasi, penambangan, dan pengolahan, sampai dengan penjualan. Kegiatan eksplorasi bijih nikel (Ni) yang salah satu tahapanya adalah pemboran eksplorasi dimana menurut Anggayana (2005), kegiatan pengeboran adalah salah satu kegiatan penting dalam sebuah industri pertambangan, kegiatan pengeboran ini mempunyai tujuan yang bermacam-macam dan tidak hanya dilakukan dalam industri pertambangan saja namun juga untuk bidang-bidang yang lain, dapat bertujuan untuk mendapatkan kandungan kadar kimiawi sehingga data tersebut akan digunakan untuk keperluan penambangan, untuk pemboran eksplorasi bijih nikel sendiri menurut Waheed (2006) bijih nikel terdapat pada daerah laterit dimana profil laterit dibagi menjadi 3 zonasi, yaitu zona limonit, zona saprolit, dan zona badrock (Habibie et al, 2019;Sulfahmi et al, 2020;Yogi Pranata et al, 2017).…”

Section: Pendahuluanunclassified

Efisiensi Kerja Pemboran Eksplorasi Pada PT Vale Indonesia

Bakri¹,

Thamsi²,

Sahabuddin³

2023

JESTA

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Exploration activities nickel (Ni) which is one of the stages, is where the exploratory drilling work efficiency is one of the main factors that can describe how good a job has been done. The purpose of this study is to analyze the efficiency of exploration drilling. This research method is done by direct observation in the field. The data that was obtained was a record time of any activities during the working day in the form of exploration drilling activity, inserting the inner tube in the core barrel, an empty lap, then taking out further drilling in the core barrel inner tube, prepare the inner tube, add pipes, and re-inserting the inner tube core barrel. There are other activities that the problems of the inner tube not landing. The inner tube can not rise, smoothing supplies drilling, pulling out the pipe, moving the drilling tool and equipment, preparation of drilling, transportation, accessibility, preparatory work crew, safety talk/meeting, checking tool, refueling, wait for dozer, crew return preparations, waiting for a supervisor/geologist, waiting for the crew, weather problems, rest, waiting to go home, repair, and water issues. This study obtained an efficiency increase of 44.43% in drilling work. Concluded the drilling work efficiency is still below the working efficiency standards applied by the company by 50%.

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Section: Pendahuluanunclassified

Efisiensi Kerja Pemboran Eksplorasi Pada PT Vale Indonesia

Bakri¹,

Thamsi²,

Sahabuddin³

2023

JESTA

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“…A mineral resource is a concentration or occurrence of material that has economic value on or above the earth's crust, with a certain shape, quality, and quantity that has reasonable prospects for eventually being economically extracted (Sukandarrumidi, 2007). Nickel laterite is one type of natural resource that cannot be renewed, this is because the formation of nickel laterite requires a process that takes millions of years (Thamsi, Jafar, and Fauzie 2021a;Yogi Pranata et al 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Some of the factors that form nickel include rock of origin, climate, chemical reagents and vegetation, structure, topography, and time (Waheed, 2002;Hardyanto 2016;Hasria et al 2021;Yogi Pranata et al 2017). The need for high-grade mills causes ore, ore itself is a valuable mineral that is sought and then extracted in mining activities with the hope (although not always achieved) to gain benefits for miners and for the community (Taylor, 1986).…”

Section: Introductionmentioning

confidence: 99%

Classification of Ni Levels for Determination Cut-Off Grade in Region X

Jafar

Wahid

Widodo

2022

Journal of Geology and Exploration

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The need for ore with levels above 1.8% presents the author's initiative to conduct research to produce ore products with the required levels. The aim is to find out the lowest grade of ore that can be mined and used as a cut-off grade in area x. The research method used is the blending method. Some of the data needed include the drill point coordinates, the borehole's depth, the borehole, the slope of the borehole, lithology, and the value of Ni content. The distribution of nickel in the x region is dominated by ore which has a grade of 1 to 2% with a total volume of 140,100 Bcm, and there is a small amount of nickel that has a rate above 2% with an importance of 15,650 Bcm. The mining sequence has been divided into three to three stages, where the tonnage obtained from each location is 8,9937 tons, 442361 tons, and 100,554 tons. The simulation of blending steps was carried out starting from the classification of nickel with the highest grade, namely nickel with the lowest rate of 1.8% with an average rise of 2.07%, to the last stage, which produces a middle grade of 1.9%, namely in the classification of nickel with rates above 1.6 %. From the results of the blending simulation that has been carried out, it can be concluded that the lowest grade that can be used as a cut-off grade in area x is ore with a Ni content of 1.6%.

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“…To achieve optimal production, mining planning is carried out (Dzakir et al, 2022;Jafar, 2016;Yogi Pranata et al, 2017). To maintain the continuity of production, mining planning is carried out in the mining stages.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Mined Reserve Tonnage on "M" Hill Between Mine Plan and Mining Realization

Djamaluddin

Mulhadramy

Jafar

2022

Journal of Geology and Exploration

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In mining activities, there is often a discrepancy between the plan and actual conditions in the field; if not identified early, this discrepancy will undoubtedly have the potential to cause losses if it continues to repeat itself. This study aimed to determine the factors driving the difference between the mine plan and mining realization. This research uses Pit design data, mine progress measurement data, material movement data, and two mine plan data, namely the backup plan model resulting from detailed exploration and the backup plan model data from the input drill results. From the results of the mine plan research, the closest to realization is the plan using input drill data with an average material movement difference of 10% and the difference in mined ore reserves an average of 12%. In comparison, detailed exploration data with an intermediate material movement difference of 12% to 42% and the contrast in mined ore reserves is 52% on average. The presence of overcuts influences this and the use of different densities.

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Analisis Perbandingan Kadar Nikel Berdasarkan Perencanaanterhadap Realisasi Penambangan

Cited by 6 publications

References 0 publications

Efisiensi Kerja Pemboran Eksplorasi Pada PT Vale Indonesia

Efisiensi Kerja Pemboran Eksplorasi Pada PT Vale Indonesia

Classification of Ni Levels for Determination Cut-Off Grade in Region X

Comparative Analysis of Mined Reserve Tonnage on "M" Hill Between Mine Plan and Mining Realization

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