PROCESS FOR PREPARATION OF ORE, EQUIPMENT FOR PREPARATION THEREOF, IRONMAKING PROCESS AND IRONMAKING/STEELMAKING PROCESS

摘要

An ore containing crystal water (bond water) is heated to dehydrate the crystal water in the form of water vapor, thereby rendering the ore porous to generate a porous ore. Next, the porous ore is forced into contact with a dry-distilled gas (organic gas) obtained by dry-distillation of an organic substance such as wood and the like or an organic liquid such as tar and the like. An organic compound such as tar and the like contained in the dry-distilled gas or organic liquid adheres to the surface of the porous ore. Next, the porous ore adhered with an organic compound is heated at 500°C or higher, to generate an ore in which a part of an oxide of an element such as iron and the like contained is reduced by carbon in the organic compound. With the reduced ore or the porous ore adhered with an organic compound, it is possible to easily reduce an oxide of an element such as iron and the like in smelting such as iron manufacturing, steel manufacturing and the like.