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ANALYSIS OF THE PROCESS OF IRON SAND PROCESSING INTO SPONGE IRON IN ORDER TO SUPPORT THE DEFENSE INDUSTRY OF STEEL RAW MATERIALS Sovian Aritonang; Jupriyanto Jupriyanto; Riyadi Juhana
Jurnal Pertahanan & Bela Negara Vol 9, No 1 (2019): Jurnal Pertahanan dan Bela Negara (English)
Publisher : Indonesia Defense University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (741.924 KB) | DOI: 10.33172/jpbh.v9i1.514

Abstract

The number of iron sand reserves is mostly spread in the coastal waters of Indonesia, from the coast of Sumatra, the southern of Java to Bali, the beaches of Sulawesi, beaches in East Nusa Tenggara (NTT), and the northern coast of Papua. Total reserves for ore are 173,810,612 tons and metal as much as 25,412,652.62 tons. But its utilization was not optimal because PT. Krakatau Steel, and PT. Krakatau Posco has produced steel plates only 24,000 to 36,000 tons per year. While the need for steel plates for the shipping industry each year requires 900,000 tons per year. With the need for raw material for steel plates in the form of iron sponges with Fe ≥ 60%, PT. Krakatau Steel is still imported from abroad. The proof is PT. Krakatau Steel before and during the year 2000 still imported Iron Ore Pellets from the countries of Sweden, Chille and Brazil for 3,500,000 tons per year. This condition is the cause of the national steel industry unable to compete with the foreign steel industry because imported raw materials are subject to import duties. This is an opportunity to build a steel raw material company because all this time the steel raw material industry in Indonesia has only two companies. This condition encourages the manufacture of iron sponges, with the process of making iron sponges with technology adapted to installed production capacity. This study analysed the manufacture of iron sponges using Cipatujah iron sand, as raw material for the manufacture of iron sponges, with the results obtained in the form of iron sponges with the highest levels of Fe ≥60.44%. This can be used for the purposes of raw materials for steel making PT. Krakatau Steel (PT. KS), because so far PT. KS claims that Fe <60% local sponge iron products. This can encourage the independence of steel raw materials, which impacts on the independence of the defence industry. But the government must also protect and prioritize steel raw materials for national production for national steel production. With the national government steel industry, the consortium of vendors supplying raw material (iron sponge) to maintain the quality and supply of continuous sponge iron.Keywords: iron sand, iron pellet, iron sponge
KINERJA DAN KEANDALAN MATERIAL : TINJAUAN LITERATUR DALAM INDUSTRI PENERBANGAN Wulan Nurfitriani; G. Royke Deksino; Jupriyanto Jupriyanto
NUSANTARA : Jurnal Ilmu Pengetahuan Sosial Vol 10, No 8 (2023): NUSANTARA : Jurnal Ilmu Pengetahuan Sosial
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jips.v10i8.2023.3936-3941

Abstract

Industri penerbangan saat ini mengalami pertumbuhan pesat, mendorong inovasi dalam bahan untuk mencapai penerbangan yang aman, efisien, dan nyaman. Bahan logam dan komposit, termasuk serat karbon, berperan penting dalam struktur pesawat, sementara bahan inovatif seperti nanomaterial dan material pintar juga memberikan kontribusi penting. Studi literatur membantu membandingkan karakteristik dan performa berbagai bahan di industri penerbangan, mengungkap kelebihan dan kelemahan masing-masing bahan serta situasi yang sesuai untuk penggunaannya. Hasil penelitian menunjukkan bahan logam seperti aluminium, titanium, dan baja paduan memberikan kekuatan dan daya tahan, namun memiliki kelemahan bobot dan kerentanan korosi. Material komposit berbasis serat karbon menawarkan kekuatan superior dan bobot ringan, meskipun dengan tantangan biaya produksi. Tren pengembangan bahan mencakup bahan komposit lebih baik, material berbasis nano, bahan multifungsi, bahan pintar, bahan ramah lingkungan, dan bahan berbasis sumber hayati. Dengan pengembangan bahan inovatif, industri penerbangan dapat mengatasi tantangan dan meraih keunggulan. Perkembangan bahan dalam industri penerbangan memiliki dampak luas, termasuk pada konsumsi bahan bakar dan dampak lingkungan. Kolaborasi antara produsen, peneliti, dan pemerintah dalam mengembangkan bahan inovatif dan ramah lingkungan adalah kunci utama menuju kemajuan industri penerbangan yang lebih baik di masa mendatang.