| 摘要 |
<p>Plant for reduction of iron ore, of the type comprising: - a first reactor (1) containing a bed of iron ore in the course of reduction, provided with means for fluidising and circulating the said ore, and comprising a device for injecting a reducing gas containing CO into the base of the said first reactor (1); - a cyclone (6) ensuring separation between the reducing gases originating from the said first reactor (1) and the solid particles which they contain, and removal of the said gases; - a gasification reactor (11) collecting the said particles and provided with means for producing CO and hydrogen from carbonaceous materials and oxygen, and means (21) for returning the said CO, the said hydrogen and the said particles into the said first reactor (1); - means (10,12) for mixing fresh ore with the said particles between the said cyclone (6) and the said gasification reactor (11); - means (22,23) for extracting the ore in the course of reduction from the said first reactor (1), the plant being characterised in that the said means for producing CO and hydrogen of the gasification reactor comprise an oxygen-coal burner (17) performing the production of the CO and hydrogen outside the said reactor. <IMAGE></p> |
