Direct-reduced iron agglomeration apparatus

Abstract

Provided is a direct-reduced iron agglomeration apparatus. According to the present invention, the direct-reduced iron agglomeration apparatus includes: a supply box disposed on a pair of rolls to supply direct-reduced iron supplied by a double screw feeder between the pair of rolls; cheek plates disposed, respectively, on side surface portions of the pair of rolls and preventing the direct-reduced iron from being pushed out in the direction of the side surfaces of the roll due to pressure caused by the pair of rolls; and a blocking unit coupled to the supply box to block the direct-reduced iron from being pushed out toward the middle portion of the roll due to the pressure caused by the pair of rolls.

Description

technical field [0001] The present invention relates to a reduced iron powder briquetting device, and more particularly relates to a reduced iron powder briquetting device, wherein a baffle plate is arranged in a feed box, so that the production capacity of a twin-screw type briquetting device can be obtained, and the The left and right rollers are used as the reference to ensure the supply characteristics similar to the single screw type. Background technique [0002] A smelting reduction ironmaking method has recently been developed as an alternative to the blast furnace method. [0003] This smelting reduction ironmaking method is to produce molten iron by pressing reduced iron powder (DRI: Direct Reduced Iron: DRI) that has passed through a fluidized furnace into lump reduced iron (Hot Compacted Iron: HCI) and then loading it into a melting and gasifier. . [0004] That is, pressure is applied to powdery reduced iron powder at a temperature of about 700° C. to 800° C. ...

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Problems solved by technology

[0010] When the plate production is discontinuous during the process, gas is ejected at the center of the roll width, and the reduced iron powder is discharged due to the gas flow rate, causing the density of the reduced iron powder to change instantly in the closed space composed of the screw rod, the cheek plate and the roll. If it is lower than the minimum required amount, press forming cannot be realized, or when more than two screws are used, the pressure applied according to the direction of rotation is different or the phenomenon of inclination to the side is aggravated, and the middle part of the roller is not easy to perform press forming

[0011] Therefore, the twin-screw wide-width type reduced iron powder briquetting device developed to increase the production capacity of the reduced iron powder briquetting device has increased the maximum production capacity, but the possibility of discontinuous production has also increased due to the wide width characteristic.

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