DESIGN MINING SEQUENCE OF NICKEL ORE ON PIT 3 BLOK MGE . PERTAMBANGAN BUMI INDONESIA INC. VILLAGE POLORA INDAH LANGGIKIMA DISTRICT NORTH KONAWE DISTRICT OF SOUTHEAST SULAWESI PROVINCE

Authors

  • Wa Oga Wa Universitas Halu Oleo
  • Wahab wa Halu Oleo University
  • Irfan Saputra Halu Oleo University
  • La Ode Jonas Tugo Halu Oleo University

Keywords:

Nickel Laterite, pit limit, mining reserves, sequence

Abstract

Potential of Southeast Sulawesi Province for  nickel Pertambangan Bumi Indonesia Inc. Mining as a company operating in the nickel mining sector also took this opportunity and took the initiative to carry out a nickel mining business. PT. Indonesian Bumi Mining has a Mining Business Permit (IUP) area of ​​5.923 Ha. The MGE block has an area of ​​17 Ha and based on the Stripping ratio study at PT. Indonesian Earth Mining is 3:1 and Cut Off Grade Ni ≥ 1,3 %. To maximize mining activities in meeting production targets, a pit limit design is carried out, the amount of mineable reserves is based on the pit limit and mining age, and a Sequence design is carried out. In this research, the number of resources obtained has a volume of 1.296,00 m3 and has mined reserves of 527.937,75 tons with a geometric depth of 90% so that the ore tonnage value obtained is 586,597.50 tons. The average Ni content is 1,52% and the resulting stripping ratio value is 2,89 : 1, so the mine life in Pit 3 is estimated to be 5 months. Based on production targets, the Sequence is designed with 5 mining stages (mining Sequence) with different average Ni content values ​​for each Sequence, where the average Ni content in Sequence 1 is 1,52%, the average Ni content in Sequence 2, namely 1,40%, the average Ni content in Sequence 3 is 1,53%, the average Ni content in Sequence 4 is 1,57% and the average Ni content in Sequence 5 is 1,58%.

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Published

2023-12-31

Issue

Vol. 3 No. 2 (2023): Jurnal Riset Teknologi Pertambangan Volume 3 Nomor 2 Tahun 2023

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Articles

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Copyright (c) 2023 Wa Oga Wa, Wahab wa, Irfan Saputra, La Ode Jonas Tugo

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