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Innovative Investigation and Strategy for Improving the Performance of 70% Alumina Refractory Roofs Against Thermal-Slag Corrosion and Extreme Temperatures in Electric Arc Furnaces (EAF) in the Nickel Matte Production Process Rohadi, Anggoro; Sulistijono, Sulistijono; Noerochim, Lukman; Sutarsis, Sutarsis; Purwaningsih, Hariyati
Eduvest - Journal of Universal Studies Vol. 5 No. 12 (2025): Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v5i12.52513

Abstract

This study investigates the performance of 70% alumina refractories on the roof of an Electric Arc Furnace (EAF) in the nickel matte smelting process. The methods used include material characterization through X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), and Scanning Electron Microscopy-Energy Dispersive X-ray (SEM-EDX), thermodynamic simulation using FactSage, and thermal stress simulation based on Finite Element Analysis (FEA). The results of the study show a significant decrease in Al₂O₃ content to below 16% in the corrosion zone, as well as an increase in Fe₂O₃ which triggers the formation of corrosive hercynite (FeAl₂O₄) and magnesium spinel (MgAl₂O₄) phases. FactSage simulations confirmed the stability of these phases at temperatures of 1200–1400 °C. FEA results identified maximum stress concentrations in the central zone of the roof, approaching the strength limit of the refractory material. Based on these findings, the proposed mitigation strategies include: optimizing the brick geometry design to reduce stress (most realistic in the short term), increasing the alumina content and decreasing Fe₂O₃ in the refractory material (potentially effective, but requires economic evaluation), and controlling the furnace temperature distribution (most technically challenging). This study provides a comprehensive approach to designing more reliable and durable EAF refractories.
Co-Authors Achly, Fariza Hafizh Adiyaksa, Muhammad Adrinanda, Noval Agung Budi Kurniawan Agung Purniawan Amrulloh, M. Farian Andiana, Rocky Andini, Risa Areliano, Samuel Ashari, Rahmat Asih, Wentika Putri Kusuma Awali, Jatmoko Azmi Mahiri Bintang Ayu Nuraeni Chusururi, Mochamad Alvan Mifta Devy Setiorini Sa’adiyah Dharma, Faridz Wira Diah Susanti Diego Pramanta Harvianto Fakhreza Abdul Farah Salsabila, Farah Faris Hizrian Maulana Faris Putra Ardiansyah Faris Putra Ardiansyah H Purwaningsih Hakim, Abdurrahman Handis Zuniandra Haniffudin Nurdiansyah Haniffudin Nurdiansyah Haniffudin Nurdiansyah Hariyati P Hariyati Purwaningsih Irbabulluba Ismail, Ika J.A. Hakim Jatmoko, Awali Jayawarsa, A.A. Ketut Jr., Teodoro A. Amatosa, Kikin Hermanto L. Noerochim Laisa, Muhammad Ikbal Laksono, Andromeda Dwi Lukman Noerochim Luthfiansyah, Candra Rizki M Rizal Pambudi M. Rizal Pambudi Mas Irfan Purbawanto Hidayat Mavindra Ramadhani Mega Ulimaz Menasita Mayantasari Menasita Menasita Mirnawati Mirnawati Moamar Al Qathafi Moh. Farid Muhammad Fachri Nafi’, Dian Naufal Gati Furqon Noor Rohmannudin, Tubagus Nurdiansyah, Haniffudin Pambudi, M Rizal R. Fajarain Rahmah, Linta Atina Ramadhani, Mavindra Ridhotullah, Aji Rinda, Sari Shaimah Rizky, Yoel Rohadi, Anggoro Rohmannudin, Tubagus N Rohmannudin, Tubagus Noor Satrianugraha, Rifqi Fernady Sidiq, Firman Sitorus, Hilda Pebrianti Octaviana Sutarsis Sutarsis Syarip Hidayat Tanjung, Rifqi Aulia Trendy Leo Pratama Tubagus N Rohmannudin Tubagus Noor R Tubagus Noor Rohmannudin, Tubagus Noor Tubagus Noor Rohmanuddin Vania Mitha Pratiwi Yunita Triana, Yunita Zaid Sulaiman