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All Journal Jurnal Ilmiah Mahasiswa Teknik Kebumian
Febi Mutia
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Earth & Planetary Sciences Education

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Optimalisasi Rangkaian Alat Bongkar, Alat Muat Dan Alat Angkut Pada Penambangan Batugamping Di Quarry Sawangan PT Sinar Tambang Arthalestari (Semen Bima) Mohd Prieska Hasela Ariki; Mulkal Mulkal; Febi Mutia
Journal of Geosciences, Mining Engineering, and Technology Vol 6, No 2 (2022): Jurnal Ilmiah Mahasiswa Teknik Kebumian
Publisher : Jurusan Teknik Kebumian Fakultas Teknik Universitas Syiah Kuala

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Abstract

PT Sinar Tambang Arthalestari as the owner and producer of Semen Bima entrust PT Bintang Mitra Sejahtera to do mining services at Sawangan Limestone Quarry. Limestone is the main raw material for cement production. Limestone mining is done by using a series of heavy eqipments such as 3 units rock breaker, 3 units excavator and 9 units dump truck. The average daily production amounts to 4,989.59 tons of limestone, while daily production target is about 8,876 tons. Optimization methods are applied to obtain the target of daily production. Optimization  for breaking machine can be achieved by using 3 units of rock breaker with an efficiency of 51% worked for 12 hours and combined with 3 units of Surface Miner SM2200 worked for 8 hours. Meanwhile optimization for loader is adjusted by combining 2 units of Hitachi Zaxis 330 with an efficiency of 39% and 2 units of Doosan 340 LCV with an efficiency of 48%. The optimization of hauler is achieved by applying 15 units of dump truck with an efficiency of 51% that can be transported as much as 25 tonne of limestone per cycle to achieve the target of daily production. So in other words at least they need 4 fleets to achieve the target of daily production. The results of limestone production by using breaking machine and 4 fleet are respectively 11,841.03 tons and 10,182.8 tons.Keywords: rock breaker, surface miner, excavator, dump truck, road width, grade mining road, optimalization.
Analisi Kinerja Alat Crushing Plant Pada Penambangan Limestone di PT Semen Padang (Persero) Tbk, Bukit Karang Putih Indarung, Padang Sumatera Barat Aidil Lian Jamirul; Nurul Aflah; Febi Mutia; Muchlis Muchlis
Journal of Geosciences, Mining Engineering, and Technology Vol 6, No 2 (2022): Jurnal Ilmiah Mahasiswa Teknik Kebumian
Publisher : Jurusan Teknik Kebumian Fakultas Teknik Universitas Syiah Kuala

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Abstract

PT Semen Padang is a cement factory which uses limestone as the main raw material. This companny located in mining area of Bukit Karang Putih, Lubuk Kilangan Idarung district, Padang, West Sumatera. Currently, PT Semen Padang has 3 (three) units of the crushing plant for limestone crushing. Units of the crushing plant are The Limestone Crusher II, Limestone Crusher IIIA, and Limestone Crusher IIIB. The research aims to know the working system of crushing plant units and evaluate the performance of the crushing plant. Another purpose of this study is to analyze the size of limestone feed material, which goes into limestone crushing plan unit using Manual photography analysis method, as well as to assess the effectiveness of the crusher towards the production target. PT Semen Padang currently has a monthly production target of 555.505 tons/month. Based on the measurement of performance parameters, the Mechanical and Physical Availability, each unit of the crushing plant has been working quite well. However, based on the Use of Availability and Effective Utilization parameters the performance of each crushing plant is still considered bad. The results showed that the presence of the value of underperformance of crushing plant unit has no effect on the company’s planned target of 555.505 tons/month, it can even reach above the target: 625.412 tons/month. Keywords: crushing plant, limestone crusher, effective utilization, crusher, manual  photography, mechanical availability, physical availability, use of availability.
Co-Authors Aidil Lian Jamirul Hafni Putri Indriani Indra Mohd Prieska Hasela Ariki Muchlis Muchlis Mulkal Mulkal Nurul Aflah Nurul Kamal Sittah Dewi Humairah Indra