Article Per Year (5 Year)
p-Index From 2021 - 2026
0.562
P-Index
This Author published in this journals
All Journal Indonesian Mining Journal MINERAL Indonesian Mining Journal
Zul Hakim, Hafid
Unknown Affiliation
Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Energy Engineering Environmental Science Materials Science & Nanotechnology

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
BENEFISIASI FISIK PADA PASIR KROMIT KADAR RENDAH MENGGUNAKAN MEJA GOYANG DAN DAVIS TUBE Herlina, Ulin; Nurjaman, Fajar; Suharno, Bambang; Mesah, Febriyani; Zulqoernain, Muhammad Syahreyzi Pashey; Al Fahmi, Muhammad Ridwan; Yuhelda; Suseno, Triswan; Bahfie, Fathan; Handoko, Anton Sapto; Zul Hakim, Hafid; Arham, La Ode
Indonesian Mining Journal Vol 28 No 2 (2025): Indonesian Mining Journal, October 2025
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol28.No2.2025.1672

Abstract

The rapid growth of the global steel industry has significantly intensified the demand for the metallurgical-grade chromite ore required for ferrochrome production. This surge has led to a depletion of high-grade chromite reserves, necessitating the utilization of low- and medium-grade chromite to support a stable raw material supply for ferrochrome. This research was conducted to determine the characteristics of the ore and to analyze the effects of physical beneficiation processes using shaking table and Davis tube in enhancing the chromium (Cr) grade and the Cr:Fe ratio of low-grade chromite sand from Morowali, Central Sulawesi. The characterization process was conducted using XRF, XRD, and SEM-EDS. Experimental parameters for the shaking table included variations in table inclination and water flow rate, while magnetic separation was analyzed across various electric current intensities. The optimal shaking table test results were achieved at an inclination of 7.5° with a water flow rate of 18 liters/minute. In contrast, the optimal test using the Davis tube was obtained at an electric current of 0.4 amperes (660 gauss). This integrated process successfully increased Cr grade from 8.5% to 20.77% (corresponding to Cr2O3 30.36%) and improved the Cr:Fe ratio from 0.97 to 1.62, achieving a recovery rate of 94.93%.
BENEFISIASI FISIK PADA PASIR KROMIT KADAR RENDAH MENGGUNAKAN MEJA GOYANG DAN DAVIS TUBE Herlina, Ulin; Nurjaman, Fajar; Suharno, Bambang; Mesah, Febriyani; Zulqoernain, Muhammad Syahreyzi Pashey; Al Fahmi, Muhammad Ridwan; Yuhelda; Suseno, Triswan; Bahfie, Fathan; Handoko, Anton Sapto; Zul Hakim, Hafid; Arham, La Ode
Indonesian Mining Journal Vol 28 No 2 (2025): Indonesian Mining Journal, October 2025
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol28.No2.2025.1672

Abstract

The rapid growth of the global steel industry has significantly intensified the demand for the metallurgical-grade chromite ore required for ferrochrome production. This surge has led to a depletion of high-grade chromite reserves, necessitating the utilization of low- and medium-grade chromite to support a stable raw material supply for ferrochrome. This research was conducted to determine the characteristics of the ore and to analyze the effects of physical beneficiation processes using shaking table and Davis tube in enhancing the chromium (Cr) grade and the Cr:Fe ratio of low-grade chromite sand from Morowali, Central Sulawesi. The characterization process was conducted using XRF, XRD, and SEM-EDS. Experimental parameters for the shaking table included variations in table inclination and water flow rate, while magnetic separation was analyzed across various electric current intensities. The optimal shaking table test results were achieved at an inclination of 7.5° with a water flow rate of 18 liters/minute. In contrast, the optimal test using the Davis tube was obtained at an electric current of 0.4 amperes (660 gauss). This integrated process successfully increased Cr grade from 8.5% to 20.77% (corresponding to Cr2O3 30.36%) and improved the Cr:Fe ratio from 0.97 to 1.62, achieving a recovery rate of 94.93%.
Benefisiasi Timah Sisa Hasil Pengolahan PT Babel Utama Korpora Menggunakan Humprey Spiral: Tin Beneficiation from PT Babel Utama Korpora Tailing by Using Humprey Spiral Fauzan, Aqwammul; Zul Hakim, Hafid; Arham, La Ode; Rofiek, Fika; Fadhilah, Rahmat; Jarwinda
MINERAL Vol 10 No 2 (2025): MINERAL
Publisher : Program Studi Teknik Pertambangan Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/2ckx7x22

Abstract

Indonesia merupakan negara penghasil timah terbesar nomor dua di dunia setelah China. Sebaran sabuk timah Indonesia membentang dari Semenanjung Malaysia, Riau, hingga ke Kepulauan Bangka Belitung. Namun, cadangan bijih timah darat yang semakin sedikit, mengakibatkan diperlukannya pemanfaatan timah low grade untuk tetap memenuhi kebutuhan timah. Salah satu sumber timah low grade yang memiliki peluang untuk diolah kembali adalah Sisa Hasil Pengolahan (SHP). Penelitian ini dilakukan untuk mengetahui karakteristik kandungan dalam Sisa Hasil Pengolahan PT Babel Utama Korpora lalu melakukan peningkatan kadar melalui pengolahan menggunakan metode gravity concentration dengan alat humprey spiral. Proses analisa kadar dilakukan dengan metode Grain Counting Analysis (GCA) dan X-ray Fluorescene (XRF). Variabel operasi humprey spiral yang digunakan adalah ukuran butir sebesar 30 mesh, 40 mesh, dan 80 mesh, serta variasi lebar diameter daun humprey spiral 60 cm dan 90 cm. Percobaan peningkatan mendapatkan hasil optimal pada kombinasi variabel ukruan butir 40 mesh dengan lebar diameter daun humprey spiral 60 cm sebesar 0,5% Sn dengan recovery sebesar 26,75%. Namun hasil ini menunjukkan pengolahan kembali tailing tidak ekonomis dikarenakan sangat jauh dari kadar yang diterima untuk proses peleburan yaitu 60% Sn.
Co-Authors Al Fahmi, Muhammad Ridwan Anton Sapto Handoko, Anton Sapto Arham, La Ode Bahfie, Fathan Bambang Suharno Fadhilah, Rahmat Fajar Nurjaman Fauzan, Aqwammul Herlina, Ulin Jarwinda Mesah, Febriyani Rofiek, Fika Triswan Suseno, Triswan Yuhelda Zulqoernain, Muhammad Syahreyzi Pashey