Analisis Peningkatan Recovery Stasiun Penyaringan Blok Barat Tambang Nikel melalui integrasi metode Six Sigma dan Sologic

Luhansa, Ronny (2024) Analisis Peningkatan Recovery Stasiun Penyaringan Blok Barat Tambang Nikel melalui integrasi metode Six Sigma dan Sologic. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Recovery penyaringan merupakan rasio antara Produk Stasiun Penyaringan (Screen Station Product/SSP) dan bijih Run-of-Mine (ROM) yang diumpankan, mengalami penurunan signifikan sebesar 16%, dari 60% menjadi 50%, selama periode 2017-2021. Gejala dari penurunan ini termasuk efisiensi yang menurun, peningkatan biaya operasional, dan target produksi yang tidak tercapai, sehingga memerlukan tindakan korektif secepatnya. Penelitian ini bertujuan untuk mengatasi penurunan tersebut dengan mengidentifikasi akar masalah dan mengusulkan langkah perbaikan menggunakan kombinasi metode Six Sigma dan metode Sologic. Metode Six Sigma, yang mengikuti siklus DMAIC (Define, Measure, Analyze, Improve, Control), digunakan untuk mengidentifikasi dan mengatasi ketidakefisienan proses secara sistematis. Metode Sologic digunakan untuk analisis akar masalah, yang berhasil mengidentifikasi sepuluh penyebab utama terkait ketidakefisienan operasional, masalah desain peralatan, dan kekurangan prosedural. Tiga langkah perbaikan yang melibatkan substitusi, teknologi rekayasa, dan kontrol administratif diimplementasikan dengan fokus pada penyebab transitory. Berdasarkan penyebab yang telah divalidasi, rencana perbaikan difokuskan pada re-cycle material reject, peningkatan aktivitas tramming, dan refresing prosedur dumping melalui pelatihan operator untuk meningkatkan recovery dan meminimalkan carryover. Re-cycle material reject berhasil meningkatkan jumlah material yang didaur ulang setiap hari dari 118 menjadi 591 ton, sementara peningkatan aktivitas tramming meningkatkan material yang di-tramming dari 10.396 menjadi 11.473 ton/hari. Peningkatan ini meningkatkan recovery stasiun penyaringan dari 50% menjadi 59% dan meningkatkan nilai sigma dari 3,46 menjadi 4,60. Pemantauan berkelanjutan melalui Floor Management Development System (FMDS) dan kegiatan gemba memastikan efektivitas dan konsistensi dari perubahan yang dilakukan
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Screening recovery, which is the ratio between Screen Station Product (SSP) and Run-of-Mine (ROM) ore fed, experienced a significant decrease of 16%, from 60% to 50%, during the 2017-2021 period. Symptoms of this decline include decreased efficiency, increased operational costs, and production targets that are not achieved, requiring immediate corrective action. This research aims to overcome this decline by identifying the root of the problem and proposing improvement steps using a combination of the Six Sigma method and the Sologic method. The Six Sigma method, which follows the DMAIC (Define, Measure, Analyze, Improve, Control) cycle, is used to systematically identify and overcome process inefficiencies. The Sologic method was used for root cause analysis, successfully identifying ten major causes related to operational inefficiencies, equipment design issues, and procedural deficiencies. Three remedial measures involving substitution, engineering technology, and administrative controls were implemented with a focus on transitory causes. Based on the validated causes, the improvement plan is focused on re-cycling rejected materials, increasing tramming activities, and refreshing dumping procedures through operator training to increase recovery and minimize carryover. Re-cycling rejected material succeeded in increasing the amount of material recycled every day from 118 to 591 tons, while increasing tramming activities increased tramming material from 10,396 to 11,473 tons/day. This improvement increased the filtering station recovery from 50% to 59% and increased the sigma value from 3.46 to 4.60. Continuous monitoring through the Floor Management Development System (FMDS) and gemba activities ensures the effectiveness and consistency of the changes made

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Penyaringan, Stasiun Penyaringan, Recovery, Six Sigma; Sologic, Bijih, Screen Station product.
Subjects:	T Technology > T Technology (General) > T58.8 Productivity. Efficiency T Technology > TN Mining engineering. Metallurgy T Technology > TN Mining engineering. Metallurgy > TN799.N6 Nickel--Metallurgy
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Industrial Engineering > 26101-(S2) Master Thesis
Depositing User:	Ronny Luhansa
Date Deposited:	26 Jul 2024 07:09
Last Modified:	26 Jul 2024 07:09
URI:	http://repository.its.ac.id/id/eprint/109122

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