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What does the nickel-iron factory do to watch firefighters?

Production requirements. Watching fireworks is the most important post in sintering operation. The fireman's duty in ferronickel plant is to adjust the ratio of coal to air to ensure that the temperature of combustion chamber and roasting zone meets the production requirements of shaft furnace. As an additive of alloying elements in steelmaking industry, ferronickel can improve the bending strength and hardness of steel.