Loading patent…
OwnerBogdan Vuletic, Bojan Vuletic +1inventors
InventorsBogdan Vuletic, Bojan Vuletic, Vladan Vuletic
Estimating the term…
A process for producing pig iron from iron ores involves the iron ores traveling from the top downwards through a reduction unit via a succession of oblique trays which are staggered in a cascade-like manner. A hot reduction gas containing carbon monoxide and hydrogen flows from the bottom of the reduction unit upwards. A reduction product is drawn off at the bottom end of the reduction unit and is fed to a unit for further treatment thereof. A reduction gas is generated in a gas generator by partial oxidation of carbon carriers or by cracking of natural gas or petroleum. Iron ores having at least a high proportion of dust-like and/or fine granular iron ores are sorted into fractions according to grain size and introduced into the reduction unit in such a way that the course fraction of the iron ore is introduced into the top section of the system and the fine fraction of the iron ore is introduced into the middle zone or into the middle and bottom zones of the system.
Process for producing pig iron from iron ores, in which the iron ores travel from the top downwards through a reduction unit through which a hot reduction gas containing carbon monoxide and hydrogen flows from the bottom of the reduction unit upwards via a succession of oblique trays which are staggered in a cascade-like manner, and the reduction product is drawn off at the bottom end of the reduction unit and is fed to a unit serving for further treatment thereof, and the reduction gas being generated in a gas generator by partial oxidation of carbon carriers or by cracking of natural gas or petroleum, characterized in that, the method of processing iron ores having at least a high proportion of dust-like and/or fine-granular iron ores comprises sorting the iron ore into fractions according to grain size and introducing the iron ore into the reduction unit, in which the iron ore is passed downwards via a system of gas distributor trays, which is located in the reduction unit, in such a way that the coarse fraction of the iron ore is introduced into the top section of the system and the fine fraction of the iron ore is introduced into the middle zone or into the middle and bottom zone of the system.
Apparatus for the thermal and/or chemical treatment of a readily disintegrating material or for producing pig iron, with a first unit for generating a hot gas, wherein the hot gas is a reduction gas, and a second unit for holding the material to be treated thermally and/or chemically, having at least one material inlet arranged in a top section of the second unit and at least one discharge appliance arranged at the bottom end of the second unit for drawing off the material treated thermally and/or chemically, and having at least one inlet for the hot gas arranged in a bottom zone of the second unit, characterized in that, in particular for processing an at least partially fine material, or for reducing at least partially dust-like or fine metal ores, there are arranged in the second unit a plurality of oblique gas distributor trays, which are staggered in a cascade-like manner, alternately slope in opposite directions and are provided with gas passage holes, there being arranged above each tray at least one drivable conveying appliance which conveys downwards along the slope of the bottom and loosens the material, and in that the material inlet is arranged above a topmost bed in the second unit and is provided with a proportioning appliance.
Dependencies are inferred from the claim text.