Utilization of Scrap Iron as a Basic Material Steel Smelting Industry
Utilization of Scrap Iron as a Basic Material Steel Smelting Industry
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Steel is a metal material whose main constituent element is iron (Fe) with the main combining element being carbon (C), so it is often referred to as carbon steel.carbon (C), so it is often referred to as carbon steel. Carbon composition in steel ranges from 0.2% to 2.1%. Other elements contained in carbon steel but with a very small percentage often referred to as impurities, including elements of Cu, Sn, Ni, Zn, and Pb. Steel that is treated with advanced coating processes for corrosion prevention purposes and beauty purposes usually have additional elements of Cr, Ni, Zn, Pb and Al. Steel treated with advanced processes in the form of strengthening usually have additional elements of Ti, Cr, Ni, Co, V and W. [1].
Steel usage rate or more commonly termed as steel consumption per capita Indonesia is about 52 kg per year. As a comparison, the level of steel consumption per capita in neighboring countries is neighboring countries including Singapore 488 kg per year, Malaysia 299 kg per year, Thailand 239 kg per year, Vietnam 277 kg per year, Philippines 94 kg per year. year, Vietnam 277 kg per year, Philippines 94 kg per year. Nationally, Indonesia's steel consumption about 13.6 million tons, while national steel production is only about 5.2 million tons. The gap between steel consumption steel consumption and national steel production is around 8.4 million tons or 62% filled by imported products. The growth of The growth of the domestic steel industry is hindered, among others, by the difficulty of obtaining raw materials in the form of scrap steel, most of which are imported. scrap, most of which also comes from imports. This is because the material is categorized as hazardous waste. The high cost of primary energy used in the processing process also adds to the existing obstacles [2].
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