Apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and apparatus for manufacturing molten irons provided with the same

Abstract

An apparatus for manufacturing compacted iron for manufacturing reduced materials containing fine reduced iron into compacted iron and an apparatus for manufacturing molten iron provided with the sameare provided. The apparatus for manufacturing compacted iron includes i) a charging hopper into which reduced materials containing fine reduced iron are charged, and ii) a pair of rollers that form agap therebetween by being spaced apart from each other and that press the reduced materials containing fine reduced iron that are discharged from the charging hopper and pass through the gap, therebymanufacturing the compacted iron. The above-described charging hopper includes i) a surface of a wall, and ii) an integrated lower surface that is connected to the surface of the wall and is directedtoward the pair of rollers. In addition, at least one discharging opening is formed on the integrated lower surface to discharge the reduced materials containing fine reduced iron to the pair of rollers.

Description

technical field [0001] The present invention relates to an apparatus for manufacturing compacted iron and an apparatus for manufacturing molten iron using the apparatus, and more particularly, the present invention relates to a reduced material containing direct reduced iron by compacting An apparatus for manufacturing compressed iron and an apparatus for manufacturing molten iron using the apparatus. Background technique [0002] Currently, about 60% of the world's iron production is produced using the blast furnace method developed since the 14th century. According to the blast furnace method, iron ore that has undergone a sintering process is charged into a blast furnace together with coke produced using soot as a raw material, and oxygen is supplied to the blast furnace to reduce the iron ore to iron to produce molten iron. [0003] The blast furnace method, which is most common in plants for manufacturing molten iron, requires raw materials to have at least a predeterm...

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that a large investment in additional equipment and devices leads to an increase in manufacturing cost

[0007] However, conventional equipment for making briquettes cannot handle large amounts of reduced materials including reduced iron fines

Therefore, when a large amount of reduced materials containing fine reduced iron is charged into the charging hopper, there is a problem in that the reduced materials containing fine reduced iron larger than an accommodation limit scatter outside

In addition, as a large amount of reduced material containing fine reduced iron is charged, the permeability of the charging hopper deteriorates, making it difficult to discharge gas contained in the reduced material containing fine reduced iron

Because of this, since a pressure change occurs in the charging hopper, there is a problem in that the reduced iron powder cannot be uniformly discharged from the charging hopper under the influence of the pressure change

In addition, since the discharge port (separately formed in the charging hopper) for discharging fine reduced iron protrudes longitudinally toward the lower side, the discharge port is easily deformed due to heat and pressure

Images