METHOD OF PROCESSING GROUND MATERIAL IN AIR- FLUIDIZED BED AND METHOD OF PRODUCTION OF PIG IRON MELT OR LIQUID SEMIFINISHED STEELS

metallurgy. SUBSTANCE: ground material is kept in air-fluidized bed by means of process gas flowing upward. Ground material at wide distribution of grain sizes and considerable amount of fine particles is processed according to this method. Flow rate of process gas is maintained at lower level as co...

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Bibliographische Detailangaben
Hauptverfasser:	VALLNER FELIKS, KHAUZENBERGER FRANTS, LI IL-OK, SHENK IOGANNES-LEOPOL'D, KEPPLINGER LEOPOL'D VERNER
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMISTRY FERROUS OR NON-FERROUS ALLOYS FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING KILNS LIGHTING MANUFACTURE OF IRON OR STEEL MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON OPEN SINTERING OR LIKE APPARATUS OVENS PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS RETORTS TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	metallurgy. SUBSTANCE: ground material is kept in air-fluidized bed by means of process gas flowing upward. Ground material at wide distribution of grain sizes and considerable amount of fine particles is processed according to this method. Flow rate of process gas is maintained at lower level as compared with rate required for fluidization of largest particles of ground materials; coarse and fine particles move upwards and are unloaded through upper area of air-fluidized bed. Flow rate of gas is maintained within 0.25 and 0.75 of flow rate required for fluidization of largest particles. After preliminary processing. Ore is delivered to melting-and-gasifying unit where it is molten at simultaneous forming of reducing gas. EFFECT: minimization of consumption of process gas and reduced losses of fine particles entrapped by process gas. 6 cl, 3 dwg