摘要:
A process is described for direct production of cast iron starting from iron bearing ore in an apparatus having two communicating chambers in which to carry out the process, comprising the following operations: pre-reduction and pre-heating to founding point of the iron bearing ore in a first substantially cylindrical chamber; final reduction, carburization and founding of the resulting iron in a second chamber arranged below said first chamber, provide the reducing gas both in said second and in said first chamber, provide the reducing gas both in said second and in said first chamber, characterized by the fact that: said iron bearing ore and oxygen are introduced into said first chamber through the side walls thereof, simultaneously but separating, the oxygen being introduced at a speed lower or equal to the speed of introduction of said iron bearing ore; and said oxygen, coal and flux are introduced into said second chamber simultaneously but separately through the side walls thereof and in a manner inclined downwards and towards the center of said second chamber.
摘要:
A process is described for direct production of cast iron starting from iron bearing ore in an apparatus having two communicating chambers in which to carry out the process, comprising the following operations: pre-reduction and pre-heating to founding point of the iron bearing ore in a first substantially cylindrical chamber; final reduction, carburization and founding of the resulting iron in a second chamber arranged below said first chamber, in which coal and oxygen, injected into said second chamber, provide the reducing gas both in said second and in said first chamber, characterized by the fact that: said iron bearing ore and oxygen are introduced into said first chamber through the side walls thereof, simultaneously but separately, the oxygen being introduced at a speed lower or equal to the speed of introduction of said iron bearing ore; and said oxygen, coal and flux are introduced into said second chamber simultaneously but separately through the side walls thereof and in a manner inclined downwards and towards the center of said second chamber.
摘要:
A continuous process and apparatus for transforming, by chemico-physical reactions inside molten slag, materials to be gasified, thermally destroyed, inertized, or from which elements of commercial value are to be recovered, yielding controlled composition products, in an apparatus made of a single reaction chamber, called reactor, having a substantially cylindrical symmetry, including two portions, a top and a bottom one, said process being characterised in that it comprises the steps of: introducing into the bottom portion of the reactor, sideways through a second injection level and/or vertically from the top thereof, the material to be transformed, the fuel, the comburent and possibly slag inoculants and additives and material-carrying gases; and tapping from the bottom portion of the reactor the transformed material, of controlled composition, and the inert slag.