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During the period of cooling and hardening from its molten state, BF slag can be cooled in several ways to form any of several types of BF slag products. Blast Furnace: Combustion material and ore are supplied from the top while an air flow is supplied from the bottom of the chamber.
The forge is a furnace usually fuelled by coal and used to heat metal to make it softer and easier to hammer into shape. The anvil is a block of iron with a flat top and pointed end. Pieces of metal are placed on it and shaped by hammering. Bellows are used to blow air onto the forge fire to make it hotter.he forge is a furnace usually fuelled by coal and used to heat metal to make it softer and easier to hammer into shape. The anvil is a block of iron with a flat top and pointed end. Pieces of metal are placed on it and shaped by hammering. Bellows are used to blow air onto the forge fire to make it hotter.