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All Journal Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Abdul Rauf
Universitas Pembangunan Nasional "Veteran" Yogyakarta
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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PENINGKATAN PRODUKTIFITAS UNIT CRUSHING PLANT III UNTUK MENCAPAI TARGET PRODUKSI DI PT. BATU KALI WELANG AMPUH KABUPATEN PASURUAN PROVINSI JAWA TIMUR Flaminggo Gingga; Abdul Rauf; Rhizky Maulana
Retii Prosiding Seminar Nasional ReTII ke-13 2018
Publisher : Institut Teknologi Nasional Yogyakarta

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Batu Kali Welang Ampuh (BKWA) Ltd is a company engaged in andesite stone mining business. The production target is planned to achieve 1000 tons/days. In fact, based on the observation of the dump truck loading and unloading as well as on the calculation of the existing equipment capability in crushing plant III unit, this company only reached the production target 364 tons/day or 121.3 ton/hour. So, in order to achieve the desired production target, a research on the crushing unit needs tobe done. Based on the observations and calculations from the field data, the condition of the usage avaibility value of mechanical devices obtained : hopper was 97.60%, vibrating feeder was 100%, jaw crusher was 92.27%, belt conveyor was 83.48%, and vibrating screen was 82.63%. In order to increase the production, there should be improvement efforts on working time. So, by the improvement of the time constrain, the effective working time improved from 177 minutes/day to 385 minutes/day or 6.42 hours/day. Thus, it will increase the production target from 364 tons/day to 1001.52 tons/day.
RANCANGAN TEKNIS KOLAM PENGENDAPAN PADA UNIT PENCUCIAN BAUKSIT “BUKIT 15” PT. ANEKA TAMBANG ( PERSERO ) Tbk. KECAMATAN TAYAN HILIR redha nagara hanis; Abdul Rauf
Retii Prosiding Seminar Nasional ReTII ke-13 2018
Publisher : Institut Teknologi Nasional Yogyakarta

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Pertambangan bijih Bauksit di daerah Tayan merupakan salah satu proyek penambangan bijih Bauksit milik PT. ANTAM, Tbk yang terletak di Kecamatan Tayan Hilir, Kabupaten Sanggau, Provinsi Kalimantan Barat. Metode penambangan yang diterapkan yaitu tambang terbuka (open cast) dengan sistem penambangan Side Hill. Sasaran produksi sebesar 515.000 ton wash bauxite/tahun dan faktor kongkresi 64% maka tailing yang dihasilkan dari proses pencucian bauksit adalah 289.485 ton tailing/tahun. Density tailing 1.450 kg/m3 didapatkan debit material tailing 0,03 m3/detik. Proses pencucian bauksit menggunakan dua buah KENFLO PUMP dengan kapasitas pompa 300 liter/detik, didapatkan debit air pencucian 0,6 m3/detik. Lokasi penelitian mempunyai intensitas curah hujan tinggi yaitu 21,21_mm/jam. Berdasarkan pengamatan luas daerah tangkapan hujan sebesar 53.780 m2, koefisien limpasan sebesar 0,2. Dengan perhitungan dapat diketahui total limpasan maksimum yaitu 0,063 m3/detik. Debit total material tailing, air hasil pencucian dan air limpasan maksimum yang masuk ke kolam pengendapan yaitu 0,693 m3/detik. Dengan persen solid 4,33 % dan prosentase pengendapan 80,73 % maka dapat diketahui bahwa volume air dan padatan sebesar 20.638,8 m³/hari dengan satu hari kerja selama 8,83 jam, volume padatan dalam kolam pengendapan didapatkan yaitu sebesar 721,45_m³/hari. Dengan volume tersebut kolam pengendapan hanya bisa menampung material tailing selama 22 hari dengan menggunakan dua buah alat Hydraulic Excavator Komatsu PC 200-7SEF selama 4 hari waktu pengerukan.
Co-Authors Flaminggo Gingga redha nagara hanis Rhizky Maulana