Article Per Year (5 Year)
p-Index From 2021 - 2026
1.829
P-Index
This Author published in this journals
All Journal Prosiding Seminar Nasional Pakar KURVATEK Prosiding Seminar Teknologi Kebumian dan Kelautan (SEMITAN International Journal of Hydrological and Environmental for Sustainability Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII
Erry Sumarjono
Program Studi Teknik Pertambangan, Institut Teknologi Nasional Yogyakarta
Aerospace Engineering Agriculture, Biological Sciences & Forestry 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 Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation

Published : 16 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 16 Documents
Search

 1   2 
Analisis Pengaruh Faktor Isian Terhadap Hasil Fragmentasi Pada Kegiatan Peledakan Di PT.Putra Perkasa Abadi Site PT.BIB Hutabarat, Hans William; Kusuma, Novandri; Sumarjono, Erry
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Adanya Boulder dengan ukuran yang lebih dari 80cm pada lokasi hasil kegiatan peledakan dapat menghambat kinerja produksi atau OB Removal. Jika material Boulder > 15% maka dapat menghambat kegiatan operasi penambangan lainnya. Oleh karena itu dengan penelitian ini dapat diambil kesimpulan bahwa ukuran fragmentasi dengan ayakan lebih dari 80 cm pada diameter 200 mm memiliki perbandingan secara (Metode Kuz-Ram) dengan metode Kuz-Ram yaitu 63,41 % dan secara (image analysis) dengan pembacaan delinisiasi Split Desktop 4.0 72,43%, sedangkan pada diameter lubang 171 mm secara (Metode Kuz-Ram) 76,80% dan secara (image analysis) 85,30% sehingga dilakukan Analisis Regresi dengan Metode Eksponen yang menyimpulkan besar nilai pada hasil fragmentasi diameter lubang 200 mm yaitu R= 0,826 dan nilai R2 = 68,3% dan pada diameter lubang 171mm nilai R= 0,960 dan nilai R2 = 92,1% . Sehingga dari hasil Analisis Regresi didapatkan persamaan y= 30.629e5.5227x .pada variabel dependent X (PF) dan variabel independent Y( Fragmentasi Ukuran ayakan 80 cm) pada diameter lubang 200mm dan persamaan y= 229,444 + 78,104(ln)X pada diameter lubang 171mm dengan metode Logarithm. Maka untuk PF yang menjadi rekomendasi dari hasil analisis yaitu PF= 0,185 pada diameter lubang 200mm dan PF= 0,16 pada diameter lubang 171mm.
Desain dan Produktivitas Crushing Plant dalam Upaya Memenuhi Target Produksi Batubara Sebesar 500 Ton/Jam di PT. Dizamatra Powerindo Lahat Provinsi Sumatera Haryanto, Agus; Hendro Purnomo; Erry Sumarjono
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

PT. Dizamatra Powerindo merupakan perusahaan yang bergerak di bidang penambangan batubara dengan sistem tambang terbuka. Perusahaan ini memiliki 3 (tiga) ROM yang aktif beroperasi dalam melakukan crushing batubara dan akan membangun ROM baru (ROM 4) dengan kapasitas sebesar 500 Ton/Jam. Sehingga diperlukannya desain dengan memperhatikan ketentuan-ketentuan yang menjadi standar perancangan crusher plant agar mencapai rencana produksi sebesar 500 Ton/Jam. hasil penelitian ini berdasarkan desain yang dibuat, desain crushing plant dengan target produksi 500 Ton/Jam, dapat dibuat dengan desain yang menggunakan 1 belt feeder, 3 belt conveyor, 1 vibrating screen dan 1 double roll crusher. Produktivitas rencana Crashing plant adalah, produktivitas BF01 502,608 Ton/Jam, produktivitas CP01, 510,812 Ton/jam, produktivitas RC 610,412 Ton/Jam, produktivitas CP02 518,853 Ton/Jam, dan produktivitas CP03 525,407 Ton/Jam. Dengan hasil produktivitas tersebut, secara teoritis dapat disimpulkan bahwa dengan target produksi 500 Ton/jam dapat terpenuhi.
Analysis of the Use of 80% Waste Oil in Products HiMEX70 on the Quality of Blasting Results at PT Petrosea Jobsite Kideco Jaya Agung East Kalimantan Demanson Ornansah Sinaga; Novandri Kusuma Wardana; Erry Sumarjono
Retii Vol 18 No 1 (2023): Prosiding Seminar Nasional ReTII ke-18 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Hanwha Mining Service Indonesia merupakan salah satu perusahaan jasa pertambangan yang bergerak pada bidang penyedia jasa Drilling dan Blasting terbesar di Indonesia. PT Petrosea Jobsite Kideco Jaya Agung merupakan salah satu customer dari PT. Hanwha Mining Service Indonesia yang melakukan kegiatan operasional pertambangan yang besar, sehingga memiliki limbah oli bekas yang banyak. PT Petrosea Jobsite Kideco Jaya Agung bekerjasama dengan PT. Hanwha Mining Service Indonesia untuk menaikkan content limbah oli bekas ini dari yang sebelumnya 60% waste oil menjadi 80% waste oil dalam pembuatan bahan peledak berbasis emulsi agar dapat mengurangi jumlah limbah bahan beracun dan berbahaya (oli bekas) dan mengurangi biaya operasional peledakan. Tahap awal penelitian dilakukan dengan uji laboratorium 9 parameter oli bekas sesuai dengan criteria limbah B3 minyak pelumas dari bekas kegiatan pengelolaan limbah bahan berbahaya dan beracun untuk kegiatan pemanfaatan limbah bahan berbahaya dan beracun dengan tujuan sebagai kontrol dan upaya untuk mencegah terjadinya kerusakan lingkungan akibat penggunaan oli bekas sebagai campuran dalam pembuatan bahan peledak berbasis emulsi. Sesuai dengan standar yang ada, treatment yang dilakukan terhadap mixing bahan peledak dengan campuran 80% waste oil yang dilakukan oleh PT. Hanwha Mining Service Indonesia tetap menghasilkan kualitas peledakan yang optimal sehingga dapat menekan penggunaan solar dan mengurangi biaya operasional peledakan.
Building Trust for Sustainable Land Rehabilitation: Community Involvement and Management Post-Mining Sutrisno, Agung Dwi; Sumarjono, Erry; Suryawan, I Wayan Koko; Lin, Bih Chuan
International Journal of Hydrological and Environmental for Sustainability Vol. 4 No. 2 (2025): International Journal of Hydrological and Environmental for Sustainability
Publisher : CV FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/ijhes.v4i2.778

Abstract

Post-mining land use sustainability is critical for mitigating environmental degradation and ensuring long-term community benefits. This study identifies gaps in participation and highlights innovative strategies for addressing trust deficits in land management. Through advanced statistical methods such as Structural Equation Modeling (SEM), the research pinpoints the pivotal role of transparency and trust-building in driving community engagement. Additionally, the study explores the implications of global best practices in land rehabilitation and how these can be adapted to local contexts like Pongkor, Bogor Regency. By integrating insights from international case studies, this analysis underscores the need for tailored community outreach programs that align with cultural and socioeconomic dynamics. The findings contribute to broader discussions on sustainable practices and provide actionable recommendations for policymakers to enhance the effectiveness of post-mining rehabilitation efforts.
LIMITTING REDUCTION RATIO SEBAGAI BATAS REDUKSI UKURAN MATERIAL PADA SINGLE TOGGLE JAW CRUSHER Sumarjono, Erry; Budi, M. Sri Prasetyo; Sukamto, Untung
KURVATEK Vol 10 No 1 (2025): Energy Management and Sustainable Environment
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33579/krvtk.v10i1.5723

Abstract

Reduction Ratio (RR) can be used to estimate the size of product that can be produced by a crusher. The reduction ratio can be calculated in several ways. One calculation that can be done is calculating the Limitting Reduction Ratio (LRR). Limiting Reduction Ratio is a comparison between the largest feed size and the largest product size. This research aims to calculate the Limiting Reduction Ratio in clay stone crushing operations for 30 samples, which was carried out on a laboratory scale, using a single toggle jaw crusher type crusher. Crushed products are separated by hand sieving sizes +4#, 10#, 20#, 40#, 60#,100#, 200#. The research results show that the percentage of crushed products produced is still found in the largest sieve size, namely 4#, with an average amount of 52.33%. The largest feed size ranges from 24 mm to 27 mm and the largest product size ranges from 4 mm to 6 mm. The relationship between total feed weight and total product weight can be expressed in the equation Y = 0.5229 X and R2 = 0.9228, while the relationship between the largest feed size and the largest product size is expressed in the equation Y = 0.2044 X and R2 = 0.9761. The calculation of the limiting reduction ratio ranges from 4.2 to 6.8, with an average value of 5.02. Keywords: Crushing, Jaw Crusher, Mineral Processing, Reduction Ratio, Reduksi
Losses Material Crushing Products Single Toggle Jaw Crusher sumarjono, erry; Sukamto, Untung; Kadiman, Sugiarto
Retii 2024: Prosiding Seminar Nasional ReTII ke-19 (Edisi Penelitian)
Publisher : Institut Teknologi Nasional Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Losses material or loss of material could occur in the mineral processing or mineral dressing, due to the crushing of excavated materials (material) resulting from mining in crushing or grinding. The amount of product produced using crushing equipment can always be smaller than the amount of feed inserted. This laboratory scale research was carried out to calculate the percentage of material loss. The research was carried out using a single toggle type jaw crusher. The feed that is put into the jaw crusher is 30 rock samples, the weight of each rock sample is weighed, expressed as the weight of the feed. Weighing is also carried out on the crushing results, expressed as product weight. Calculation of material loss is obtained from the difference between feed weight and product weight. The loss factor is calculated based on the difference in the weight of the feed and product compared to the weight of the feed. The percentage of material loss is calculated by reducing the weight of the product by the weight of the feed multiplied by 100%. The results of the research show that based on the average calculation the loss factor = 0.067320429 and the percentage of material loss = 6.732042886%. The conclusion obtained based on research on 30 data shows that the percentage of material loss in the rock crushing process using a single toggle jaw crusher is below 10%.
Co-Authors Agung Dwi Sutrisno Agus Haryanto Agustinus Isjudarto Anna Sikhatul Kaifiyah Budi, M. Sri Prasetyo Demanson Ornansah Sinaga Denanson Ornansah Sinaga Dhanty Indriastuty Fahrudinoor Hendro Purnomo Hutabarat, Hans William Kadiman, Sugiarto Kusuma, Novandri Lakon Utamakno Lin, Bih Chuan M. Aldi Rizandi Masagus A Azizi Misdiyanta, Partama Novandri Kusuma Wardana Reza Aryanto Subandrio Subandrio Suryawan, I Wayan Koko Taat Tri Purwiyono Untung Sukamto, Untung Utamakno, Lakon