Vidi Muhammad Irvan

KAJIAN KEMAMPUAN PRODUKSI UNIT CRUSHING PLANT LIMESTONE DI PT. SINAR TAMBANG ARTHALESTARI, BANYUMAS, JAWA TENGAH

Introduction

Kajian kemampuan produksi unit crushing plant limestone di pt. Sinar tambang arthalestari, banyumas, jawa tengah. Kaji kemampuan produksi unit crushing plant batugamping di PT. Sinar Tambang Arthalestari, Banyumas. Analisis efisiensi Hammer Crusher & strategi peningkatan hasil produksi.

Abstract

Abstrak Penambangan batugamping didaerah Bukit Sawangan timur Ajibarang, merupakan salah satu kegiatan penambangan batugamping milik PT. Sinar Tambang Arthalestari. Kegiatan penambangan dilakukan dengan sistem tambang terbuka. Seluruh kegiatannya mu1ai dari pembongkaran, pemuatan, dan pengangkutan dilakukan dengan peralatan mekanis. Agar batugamping yang ditambang memenuhi syarat ukuran produk yang diinginkan, maka di1akukan operasi pengecilan ukuran, alat peremuk yang dipakai oleh PT. Sinar Tambang Arthalestari adalah Hammer Crusher, dengan kapasitas 1.000 ton/ jam.Dari hasil pengamatan terhadap Crusher 211HC1 batugamping, produksi nyata crusher batugamping saat ini sebesar 699,01 ton/jam, Efective Utilization (Effesiensi kerja) sebesar 56,32 % dari waktu kerja yang tersedia 16 jam / hari dengan hasil produksi adalah 6.297 ton/hari atau 393,56 ton/jam. Sehingga sasaran produksi sebesar 7.419 ton / hari atau 464 ton/jam belum dapat tercapai. Untuk meningkatkan hasil produksi batugamping, dapat dilakukan usaha perbaikan terhadap hambatan yang terjadi selama ini. Waktu hambatan tersebut sebesar 6,99 jam/hari berkurang menjadi 4,77 jam/hari sehingga Efective Utilization dari 56,32 % meningkat menjadi 70,19 % dan produksi juga meningkat dari 6.297 ton/ hari atau 393,56 ton/jam menjadi 7.901 ton / hari atau 494 ton/jam.Kata-kata kunci : Hammer Crusher, efective utilization, hambatan. AbstractThe limestone mining at Sawangan timur Mountain In Ajibarang, is one of mining limestone activity which owned by PT.Sinar Tambang Arthalestari. Mining activity has been doing with open pit system. All of this operation is started by Ripping, Loading and Hauling that worked by the mechanic tools. The limestone has been operating, have to meet requirements with the crusher capacity, in general the reduction size must be done with the crushing plant, with Hammer Crusher and the capacity is 1.000 tons/hour. From observation Crusher 211HC1 Limestone, the actual crusher production of limestone in this time equal to 699,01 tons/hour, job efficiency is 56,32% from the time availability of 16 hour/day with the production result 6.297 tons/day or 396 tons/hour. Could more the target production is equal to 7.419 ton/day or 464 tons/hour not yet earned reached. To increase the production target of Limestone, which could be performed to improve the resistance time equal to 6,99 hour/day which maybe reduced to 4,77 hour/day and the production also can be increased from 6.297 tons/day or 393,56 tons/hour become 7.901 tons/day or 494 tons/hour.Keyword: crusher, hammer crusher, job efficiency.

Review

This paper, titled "KAJIAN KEMAMPUAN PRODUKSI UNIT CRUSHING PLANT LIMESTONE DI PT. SINAR TAMBANG ARTHALESTARI, BANYUMAS, JAWA TENGAH," investigates the production capability of a limestone crushing plant at PT. Sinar Tambang Arthalestari. The study focuses on an open-pit limestone mining operation utilizing a Hammer Crusher with a theoretical capacity of 1,000 tons/hour. Through observation of Crusher 211HC1, the authors identify a significant discrepancy between the actual production rate (699.01 tons/hour or 6,297 tons/day) and the target production (7,419 tons/day), indicating that current operational efficiency (56.32%) is insufficient to meet desired output. The research provides a clear quantitative assessment of the current operational status, highlighting the practical challenges faced in achieving production targets within the mining industry. The use of key performance indicators such as 'effective utilization' and 'resistance time' offers a relevant framework for analyzing equipment performance. Importantly, the abstract goes beyond merely identifying the problem by proposing a specific pathway for improvement: reducing daily 'resistance time' (downtime) from 6.99 hours to 4.77 hours. This proposed intervention is projected to significantly boost effective utilization to 70.19% and increase daily production to 7,901 tons, effectively surpassing the original target. While the abstract effectively outlines the problem and a potential solution, the full paper would benefit from a more detailed exploration of the *types* and *root causes* of the identified 'resistance time.' Understanding whether these delays stem from mechanical breakdowns, operational inefficiencies, material flow issues, or other factors would provide a more robust basis for the proposed reduction in downtime. Additionally, exploring other potential bottlenecks beyond just downtime, such as variability in feed material characteristics or optimization of loading and hauling preceding the crusher, could offer further avenues for maximizing output. A deeper analysis into the implementation strategies for achieving the proposed reduction in downtime would also enhance the paper's practical utility for industry professionals.

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