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All Journal APLIKA Jurnal Ilmu Pengetahuan dan Teknologi Journal of Degraded and Mining Lands Management Jurnal Chemurgy INDONESIAN MINING PROFESSIONALS JOURNAL Dewantara Journal of Technology Jurnal Sosial dan Teknologi Action Research Literate (ARL) Jurnal Locus Penelitian dan Pengabdian Educational Building: Jurnal Pendidikan Teknik Bangunan dan Sipil Journal Transformation of Mandalika Journal of Comprehensive Science MINERAL Nusantara Civil Engineering Journal INTAN Jurnal Penelitian Tambang Jurnal Sosial dan Sains JURNAL TEKNIK GEOLOGI : Jurnal Ilmu Pengetahuan dan Teknologi Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII Jurnal Teknik Pertambangan (JTP) Jurnal Inovasi Global JURNAL TEKNOLOGI MINERAL FT UNMUL
Revia Oktaviani
Jurusan Teknik Pertambangan, Fakultas Teknik, Universitas Mulawarman
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Transportation Other

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Journal : Journal Transformation of Mandalika

 1 
EVALUASI COAL RECOVERY PADA KEGIATAN PENAMBANGAN DARI PIT A MENUJU STOCKPILE DI PT. X (EVALUATION OF COAL RECOVERY IN MINING ACTIVITIES FROM PIT A TO STOCKPILE AT PT. X) Azzahra, Siti Maghfirah; Hasan, Harjuni; Oktaviani, Revia; Winarno, Agus; Respati, Lucia Litha
Journal Transformation of Mandalika, e-ISSN: 2745-5882, p-ISSN: 2962-2956 Vol. 3 No. 4 (2022): April
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/jtm.v3i4.1138

Abstract

Several coal companies apply a minimum target of coal recovery. Coal recovery is a comparison between the actual tonnage of coal production based on the data from the weighbridge and the coal tonnage as a result of survey measurements expressed as a percentage. The greater the coal recovery more effective the coal was mined. Loss of coal during the mining process was unavoidable. However, if the cause is known in detail, the amount of loss can be minimized by making efforts to repair the existing causes and can increase the value of coal recovery and the utilization of coal reserves owned by the company. There are 30 coal mining data. 19 of them still had a coal recovery below 96% with a total tonnage loss of 1.485,97 tonnes. There are 6 activity criteria that cause coal recovery, including the coal getting less than optimal and still leaves coal on front which accounts for 47,45% of the total loss, coal used as road coating accounts for 5,67%, survey measurement data is less representative the appearance of coal shapes accounted for 2,48%, errors naming on coal haulage coupons accounted for 9,77%, waterlogged fronts accounted for 29,64%, and recleaning accounted for 5,01% of the total tonnage loss.
STUDI ADSORBSI LOGAM BESI (Fe) DAN MANGAN (Mn) PADA AIR ASAM TAMBANG OLEH KOMPOSIT: CLAYSTONE – ZEOLIT - KARBON AKTIF TERAKTIVASI ADSORPTION STUDY OF LOGAM BESI (Fe) AND MANGANESE (Mn) ON ACID MINE WATER BY CLAYSTONE COMPOSITE - ZEOLITE - ACTIVATED CARBO Ginting, Emdananta; Devy, Shalaho Dina; Henny Magdalena; Oktaviani, Revia; Respati, Lucia Litha
Journal Transformation of Mandalika, e-ISSN: 2745-5882, p-ISSN: 2962-2956 Vol. 3 No. 5 (2022): Mei
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/jtm.v3i5.1184

Abstract

Composites are a combination of two or more different materials and their properties to form new materials that have better characteristics. The composite was previously composed of activated claystone, activated zeolite, and coconut shell activated charcoal with 3 ratios, namely: (claystone [C] : zeolite [Z] : activated charcoal [A] = 60:20:20; 20:20:60; and 20:60:20. This composite acts as an adsorbent in the adsorption process of acid mine water samples. Based on the results of the adsorption test, it was concluded that the composite cannot neutralize the pH of acid mine water. Of the three types of composites, Composite A (claystone [C] : zeolite [Z] : activated charcoal [A] = 60:20:20) showed a significant influence with a decrease in the concentration of heavy metals Iron and Manganese within 30 min of contact time. Fe adsorption capacity is 20,7 mg/g and Mn is 24,3 mg/g.
Co-Authors Achmad Faisal Agus Winarno Agus Winarno Agus Winarno, Agus Ainayah Al Fatihah Albertus J Pontus Albertus Juvensius Pontus Albertus Juvensius Pontus Anakta Hartanta sebayang Ashabul Kahfi, Ashabul Azzahra, Siti Maghfirah Benny Christian BB Bryan Andreas Turnip Budi Utama, Yogi D. Devy, Shalaho Daruis, Rabin Devy, Shalaho Dina Dina Devi, Shalaho Dina Devy, Shalaho Dionisyus Fransiskus Sinaga Fernando Lawangan Ginting, Emdananta Gunawan Manullang, Ronal Edi Harjuni Harjuni Hasan Harjuni Hasan Henny Magdalena Ibrahim Ibrahim Ilham, Akbar Irvantoni Simbolon, Desron Jaba, Yafet Juvensius Pontus , Albertus Juvensius Pontus, Albert Juvensius Pontus, Albertus Juvensius Pontusi, Albertus Juvensius, Albertus Kasbillah, Kasbillah Kevin Elzar Rosera A Kresna Phadiakara Krisanto Yardin Panggeso L. Tobing, Ciko Gratio Parkletos Lifia Kemala Dewi Litha Respati, Lucia Lucia Litha Respati Lucia Litha Respati M. Rijal, M. Mardan Ali Masayu Widiastuti Milda Milda Muhammad Hamzah, Muhammad Muhammad Rayhan Fhadillah Mukmin, Abdul Rijal Musodiq Musodiq Nimsi, Yekeskiel Nugroho, Windhu Nur Qorima Azis Nur, Al Maida Nurhidayat, Royan Pontus, Albertus Juvensius Rafael Bonardy Gultom Respati, Lucia Litha Ronald Alvin Ifnie, Jones S Sumarlin S. Depari, Raja Kami Sabrian, Pangea Ghiyats Sandri Tandi Rapang Satria Bekti, Nanda sebayang, Anakta Hartanta Sembiring, Irianta Ibo Shalaho Dina Devy Shalizam, Shalizam Sharon Tria Kurniawati Silaban Silalahi, Abdi Brema Sitepu, Joe Vandame Situmorang, Ardo P Sokisha, Sokkia Suhaila Ridwan Suharni Suharni Tommy Trides Tommy Trides Tommy Trides Tommy Trides Trides, Tommy Vandrianus Felix Feto Nuwa W. S. Gumilang, W. S. Gumilang Wahyu Garini, Andini Dwi Widiastuti, Masayu Widzar, Moh. Widzar Fahmi Windhu Nugroho Windhu Nugroho Windhu Nugroho windhu Nugroho Windhu Nugroho windhu Winonazada, Rety Yekeskiel Nimsi Yufita, Zaenul Yunianto Setiawan, Yunianto