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Rellenar huecos (1): JXUwMDA4JXUwMDM5JXUwMDBlJXUwMDQ3JXUwMDQ5JXUwMDFiJXUwMDFkJXUwMDAx is a mixture of iron mineral ore, with carbon and Rellenar huecos (2): JXUwMDM0JXUwMDA1JXUwMDA0JXUwMDA4JXUwMDE2JXUwMDA3JXUwMDFiJXUwMDAxJXUwMDBi , which is Rellenar huecos (3): JXUwMDJiJXUwMDFlJXUwMDA4JXUwMDA5JXUwMDE4JXUwMDExJXUwMDAx atover 1 500 °C. It contains other impurities, so it needs to be processed to produce Rellenar huecos (4): JXUwMDJiJXUwMDA3JXUwMDExJXUwMDAwJXUwMDA5 . It is produced in a steelworks.
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Pig iron
limestone
melt
smelted
iron
steel