Appts. for injecting material into cupola during molten iron mfr. - has sealed reservoir or side well connected to atmos. or pressurised gas, which is fitted to injector
The appt. consists of a sealed reservoir or side well (a) which can be connected to the ambient atmos. or to a pressurised gas, and which is fitted with >=1 injector feeding solids into the well (a). Between the well (a) and the hearth of the cupola is >=1 sloping channel via which molten iron...
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Zusammenfassung: | The appt. consists of a sealed reservoir or side well (a) which can be connected to the ambient atmos. or to a pressurised gas, and which is fitted with >=1 injector feeding solids into the well (a). Between the well (a) and the hearth of the cupola is >=1 sloping channel via which molten iron and the injected solids are driven into the cupola; and a return channel. The channels located between the cupola and the well (a) may have various pref. profiles to permit the circulation of the molten iron through the well and back to the cupola; and the channels are pref. formed in refractory bricks located in the cupola wall. The compsn. of the molten iron can be accurately controlled in the cupola so there is no need to treat the iron in a ladle.
L'appareil comporte un réservoir étanche 1 susceptible d'être raccordé en 23 à une source de gaz sous pression et d'être mis à l'air libre en 22, ce réservoir étant en outre équipé d'un injecteur 26 de produit solide; une communication permanente est alors établie, entre les parties basses du creuset 6 et du réservoir 1, à travers au moins un passage divergent 16, 18 délimité par une paroi supérieure en pente ascendante vers ledit creuset et une paroi inférieure sensiblement horizontale. Cet appareil est applicable à l'élaboration, directement dans le creuset d'un cubilot, de fontes ayant une analyse ou une structure particulière. |
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