Article Per Year (5 Year)
p-Index From 2021 - 2026
2.109
P-Index
This Author published in this journals
All Journal Chemistry Indonesian Journal of Chemical Research Jurnal GEOSAPTA Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Journal of Metallurgical Engineering and Processing Technology Jurnal Riset Teknik Pertambangan Jurnal Inovasi Pertambangan dan Lingkungan Journal of Geology and Exploration Jurnal Teknologi Kimia Mineral Journal Of Chemical Process Engineering Cognitia : International Engineering Journal
Nurhawaisyah, Sitti Ratmi
Unknown Affiliation
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation

Published : 13 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 13 Documents
Search

 1   2 
Study of The Effect of Leaching Time of Manganese Ore from Pujananting District, Barru Regency Using The Hydrometallurgical Method Nurhawaisyah, Sitti Ratmi; Muhammad Fajrul; Muhammad Idris Juradi; Mubdiana Arifin; Suriyanto Bakri
Journal of Chemical Process Engineering Vol. 10 No. 2 (2025): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v10i1.1584

Abstract

In the mining industry, increasing the content of valuable minerals in the ore levels needs to be done to add economic value. One of the methods to increase copper ore levels is leaching using a sulfuric acid solution. The purpose of this study is to determine the effect of leaching time variations on manganese gain. Lysis was carried out using a sulfuric acid solution of 30 ml per leach, a sample weight of 20 gr for each leach, a grain size of -150 mesh, a stirring speed of 200 rpm with variations in leaching time of 90 minutes, 120 minutes, 150 minutes, 180 minutes. The filtrate results from the leachate were then analyzed using the Atomic Absorption Spectrophotometer (AAS). The results of this study obtained the dissolved Mn at a 90-minute runtime of 14.4045902%, at a 120-minute runtime of 14.4221077%, at a 150-minute runoff time of 14.4173441% and at a 180-minute runoff time of 14.4244638%. Based on the results of the study, the optimal time was obtained the highest dissolved Mn is at 180 minutes of leaching.
Pengaruh Ukuran Butir terhadap Recovery MnO pada Pemisahan Bijih Mangan Oksida Menggunakan Magnetic Separator Bakri, Suriyanto; Juradi, Muhammad Idris; Nurhawaisyah, Sitti Ratmi; Furkani, Dian
Jurnal Riset Teknik Pertambangan Volume 5, No. 2, Desember 2025, Jurnal Riset Teknik Pertambangan (JRTP)
Publisher : UPT Publikasi Ilmiah Unisba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/jrtp.v5i2.7562

Abstract

Abstract. Indonesia has considerable manganese ore reserves, particularly in South Sulawesi, such as in Barru and Bone Regencies. However, most of these manganese ores still contain many impurities and have relatively low MnO content. Various beneficiation methods have been studied in recent years. This study aims to examine the effectiveness of separating manganese oxide ore using a magnetic separator with varying particle sizes. This study aims to evaluate the effect of particle size variation on the separation of manganese oxide (MnO) ore from the Ponre area, using a magnetic separator method with a primary focus on determining the MnO mineral content and recovery in each particle size fraction after the magnetic separation process. The research method used manganese ore samples that had been dried and crushed using a jaw crusher and roll crusher. The samples were then ground using a ball mill to obtain the appropriate particle size fractions. For separation purposes, the samples were classified into several size fractions: +80 mesh; -80 +100 mesh; -100 +150 mesh and -150+200 mesh. The results of manganese oxide (MnO) ore separation show that finer particle sizes do not increase MnO mineral content, nor do they increase recovery rates. Optimum recovery is achieved with MnO mineral content of 49.78% and only a 3.09% increase in MnO content for particle sizes of -100+150 mesh. Abstrak. Indonesia memiliki cadangan bijih mangan yang cukup besar, khususnya di wilayah Sulawesi Selatan seperti Kabupaten Barru dan Kabupaten Bone. Namun demikian, sebagian besar bijih mangan tersebut masih mengandung banyak mineral pengotor, serta memiliki kadar MnO yang relatif rendah. Berbagai metode benefisiasi telah dikaji dalam beberapa tahun terakhir. Penelitian ini bermaksud untuk mengkaji efektivitas pemisahan bijih mangan oksida menggunakan magnetic separator dengan variasi ukuran butir. Penelitian ini bertujuan untuk mengevaluasi pengaruh variasi ukuran butir terhadap hasil pemisahan bijih mangan oksida (MnO) asal daerah Ponre, menggunakan metode magnetic separator dengan fokus utama untuk mengetahui kadar dan recovery mineral MnO pada setiap ukuran fraksi partikel setelah proses pemisahan magnetik. Metode penelitian menggunakan sampel bijih mangan yang telah kering dihancurkan menggunakan jaw crusher dan roll crusher. Selanjutnya digerus menggunakan ball mill hingga diperoleh fraksi ukuran partikel yang sesuai. Untuk keperluan pemisahan, sampel diklasifikasikan menjadi beberapa fraksi ukuran: +80 mesh; -80 +100 mesh; -100 +150 mesh dan -150+200 mesh. Hasil pemisahan bijih mangan oksida (MnO) menunjukkan bahwa ukuran fraksi partikel yang semakin halus tidak memberikan kadar mineral MnO semakin meningkat dan begitupun juga dengan recovery yang didapatkan. Recovery optimum diperoleh kadar mineral MnO sebesar 49,78% dengan hanya diperoleh peningkatan kadar MnO sebesar 3,09% pada ukuran fraksi partikel -100+150 mesh.
Effect of Sulfuric Acid Concentration on the Leaching Behavior of Manganese Ore from Palludda Barru Regency Nurhawaisyah, Sitti Ratmi; Yusuf, Firman Nullah; Murniati, Murniati; Fajriaty, Nur Khaera; Suryanto Bakri
Cognitia : International Engineering Journal Vol. 1 No. 3 (2025): Cognitia : International Engineering Journal
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/ciej.v1i3.14

Abstract

Manganese is one of the minerals that constitute various rock formations found throughout Indonesia, particularly in the Sulawesi region. Therefore, research on the processing of manganese ore is essential to ensure its availability can be utilized efficiently and effectively. The objective of this study is to determine the effect of varying H₂SO₄ concentrations and identify the optimum concentration for achieving the highest recovery in manganese ore processing. One method to enhance manganese ore grade is by applying a leaching process using H₂SO₄ solution with concentration variations of 4%, 6%, 8%, and 10%, with a solid mass of 5 grams for each concentration. The leaching process was carried out for 6 hours at each concentration with a stirring speed of 200 rpm. The resulting filtrate was analyzed using Atomic Absorption Spectroscopy (AAS). The leaching results yielded dissolved Mn with 47.600% at 4% concentration, 52.585% at 6%, 50.141% at 8%, and 50.557% at 10%. Based on the results, the highest Mn extraction was achieved at a 6% concentration with a recovery of 52.585% after 6 hours of leaching.
Co-Authors Abdullah, Muh. Agung Andi Fahdli Heriansyah Angga Mulia, Muhammad Ilham Ardana, Muhammad Fabio Arifin, Mubdiana Bakri, Suriyanto Chalik, Citra Aulian Fajriaty, Nur Khaera Febrianty, Vanda Firdaus Firman Nullah Yusuf Fitria, Ade Nurul Furkani, Dian Idris Juradi, Muhammad Manik, Nijushiho Mubarak, Syahran Muhammad Fajrul Mundiana, Arifin Murniati . Nur Asmiani Nurliah Jafar, Nurliah Suryanto Bakri Syamsul Bakhri Utami, Hesti Wakila, Muhammad Hardin Zulkarnaen, Dina