Water quenching device for direct reduced iron (DRI) produced by rotary hearth furnace and method

Abstract

The invention provides a water quenching device for direct reduced iron produced by treating iron-containing solid waste in a rotary hearth furnace, including a rotary hearth furnace, a punching device, a hot DRI slide pipe connecting the rotary hearth furnace and the punching device, and a hot water pool , distributor, the first conveying device located above the distributor, the horizontal cylindrical centrifugal dehydrator, the storage bin located below the output end of the first conveying device, the cooling water pool, etc.; both the distributor and the first conveying device are located in the horizontal cylindrical In the cavity of the cylinder in the centrifugal dehydrator; the entrance of the hot DRI slide pipe into the brewing device is equipped with a high-pressure cooling water nozzle connected to the cooling water pool to cool the direct reduced iron produced by the rotary hearth furnace to finally meet the requirements of the electric furnace smelting Requirements for steel to use direct reduced iron as coolant.

Description

technical field [0001] This patent relates to the field of direct reduced iron produced by a rotary hearth furnace for iron-containing solid waste treatment, and is suitable for water quenching treatment of direct reduced iron in a rotary hearth furnace. Background technique [0002] For a long time, problems such as iron source raw materials for electric furnace steelmaking have restricted the development of electric furnace steel production in China. At present, the domestic raw materials for electric furnace steelmaking mainly come from imported scrap steel, pig iron lumps, hot metal and direct reduced iron. Among them, direct reduced iron is pure in iron quality and low in carbon content. It can adopt continuous feeding method and can maximize the capacity of electric furnace steelmaking. It is the best residual element diluent and iron source material for high-quality electric furnace steelmaking. [0003] "Carbon-based rotary hearth furnace + grinding and magnetic sep...

AI Technical Summary

Problems solved by technology

Since the tail of the slag removal machine is placed in a deep water pool, the equipment is soaked in hot water, the equipment is seriously aging, and the bottom of the deep water pool is full of cooling material, pushing the base of the tail of the slag removal machine will easily cause the equipment to be stuck and increase the Resistance during operation, high failure rate of equipment operation, difficult maintenance of base in deep water pool, difficult to meet continuous production requirements

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