Article Per Year (5 Year)
p-Index From 2021 - 2026
0.817
P-Index
This Author published in this journals
All Journal Jurnal Teknologi Mineral dan Batubara Jurnal Geominerba Jurnal Teknologi Mineral dan Batubara
Imelda Eva Roturena Hutabarat
Politeknik Energi Dan Pertambangan (PEP) Bandung, KESDM
Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Energy Engineering Environmental Science Materials Science & Nanotechnology Other

Published : 11 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 11 Documents
Search

 1   2 
PENINGKATAN PERSEN EKSTRAKSI PROSES PELINDIAN EMAS DAN PERAK MENGGUNAKAN VARIASI TEKNIK PENINGKATAN OKSIGEN TERLARUT SPARGER LANCE, PEROXIDE INJECTION DAN HIGH SHEAR REACTOR Ramadhan, Dikri Fajar; Hutabarat, Imelda Eva Roturena; Raja, Denny Lumban; Sulaeman
Jurnal Teknologi Mineral dan Batubara Vol 20 No 1 (2024): Jurnal Teknologi Mineral dan Batubara Edisi Januari 2024
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/jtmb.Vol20.No1.2024.1512

Abstract

Cyanidation leaching has become the most intriguing technique for extracting gold and silver. In the gold and silver cyanidation process, PT Indo Muro Kencana (IMK) implements three (3) dissolved oxygen (DO) enhancement techniques. The concentration of DO typically becomes the limiting factor in the gold cyanidation process. The use of a pressurized system can also increase the DO concentration in water. Oxygen injection techniques with a sparger lance (standard/STD), peroxide injection (PRX), and high shear reactor (Aachen assisted leach/AAL) are employed to optimize the cyanidation process due to the increasingly complex characteristics of the processed ore since 2021. The use of a high shear reactor is the latest technique implemented since April 2022, following the previous implementation of peroxide injection and sparger lance by PT IMK. The objective of this study is to determine the extraction percentage and its stability in producing extraction percentages with different ore compositions. The oxygen used for each technique is the same, approximately 548 kg/hour flow rate, 90%-93% purity, and 4-6 KPa pressure. A series of leach tests are conducted to observe the extraction percentage of gold and silver. Based on the conducted tests, the reactor high shear technique yields the highest extraction percentages for gold and silver, namely 97.06% and 82.82% respectively. Leaching with the high shear reactor technique resulted in a higher percent extraction stability than the leaching process using the other two techniques.
Co-Authors Maryono Maryono MIFTAHUL HUDA NINING S. NINGRUM Priatna Priatna Raja, Denny Lumban Ramadhan, Dikri Fajar Revi Timora Salajar Rudiyansah Rudiyansah Sabtanto Joko Suprapto Sulaeman