METHOD OF THE DIRECT PRODUCTION OF IRON, IN PARTICULAR STEELS, AND INSTALLATION FOR ITS IMPLEMENTATION Russian patent published in 2008 - IPC C21B13/14 

FIELD: ferrous metallurgy industry; other industries; methods and the devices for direct production of iron and steel.

SUBSTANCE: invention is pertaining to the field of ferrous metallurgy, in particular, to production of iron and steel. The invention includes: the iron-ore charge preliminary restoration to its solid state in the preliminary restoration in-series located along the gas route modules; its final restoration in the smelting reactor; withdrawal of the gases coming out from the smelting reactor; their mixing with the gases coming out of the preliminary restoration module and their feeding in the preliminary restoration module. At the inlet of each module exercise correction of the reducing gas composition by the plasma jet, and feeding of reducing gas in each module is exercised at three levels of the charge column height with its optimal consumption at each level of the charge column. Each module of preliminary recovery is linked by gas duct with the plasma-chemical gas generator. At that the inlet gas duct of the plasma-chemical gas generator is linked by the gas main line with the flue gas block of the smelting reactor, and the inlet gas ducts of the plasma-chemical gas generators of the subsequent modules are linked to the main lines of the flue gases of the previous modules. The invention allows to expand the surface of interaction of the charge and the reducing agent, to increase the time of their joint presence in the high-temperature reduction zone, to use the heat content of the burned gas, to reduce the consumption of the natural gas and to decrease the operational costs.

EFFECT: invention ensures expansion of the charge and the reducing agent interaction surface, the increased time of their joint presence in the high-temperature reduction zone, the usage of the burned gas heat content, the reduce consumption of the natural gas, the decreased operational costs.

5 cl, 1 dwg, 1 ex