Metalization

Smelting reductions
Smelting reduction is an alternative approach to smoothing iron making which uses char to reduce iron ore in the forms of lump ore, pellets or fines to resolve iron. It is the only alternative to the firing furnace [1]. Smelting reduction subroutinees overly conjure a liquid alive(p) metal but without all dependency on shock.
There is only one commercial-grade process currently operating which is Corex, based on each lump ore or pellets developed by Voest Alpine. There ar a number of fines based smelting reduction processes currently chthonic development. These include:
* AISI
* Ausmelt
* CCF
* DIOS
* Finex
* Hismelt
* Romelt
* Tecnored
As Fig. 1 shows the Corex process principally divides the snap furnace into two parts. This avoids the cohesive zone of the blast furnace in which coke guarantees the permeability of the ferrous burden materials during softening and melting and also acts as a sprung roof for the dry burden column.

Fig. 1: Avoidance of the blast furnace cohesive zone using the corex process [2].
As an example, the size of the 2000 t/d Corex Pohang configuration ignore be compared with the 11 200 t/d Schwelgern 2 blast furnace of Thyssen Stahl AG.



The Corex plant projects above the blast furnace, without taking the charging devices and the pennant gas pipe into consideration, by more than 20 m. From this comparison, it is expense mentioning that it requires five such Corex plants to produce the same amount of hot metal as the Schwelgem 2 blast furnace. The investment be for a Corex plant according to a European feasibility study are in the dictate of 235 ECU/ra excluding base of operations and oxygen plant and for a blast furnace in the range of 134 ECU/ra. The future field for smelting reduction processes is seen in mini-mills, or as replacement for small blast furnaces in integrated iron and steel works.
Table 1 summarizes Corex plants in operation, in crook and planned [2] The yearly capacity of a small blast furnace...If you want to get a full essay, order it on our website: Orderessay



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