SYSTEM FOR SUPPLYING GREEN PELLETS TO FURNACES OF THE MOVING GRATE TYPE USING GRANULOMETRIC SEPARATION

The present invention relates to a method for supplying green iron ore pellets to hardening furnaces, in particular of the moving grate type, the grate carriages being filled with material separated into two different granulometric ranges. The bed of pellets being hardened is therefore composed of e...

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Bibliographische Detailangaben
Hauptverfasser:	FONSECA, MAURICIO COTA, DOELLINGER, THIAGO MARCHEZI, NUNES, SERGIO FERNANDO, ANACLETO, ALEXANDRE JUVENAL, MOREIRA, JOAO LUIS, MAGNAGO, DANIEL
Format:	Patent
Sprache:	eng ; fre ; por
Schlagworte:	BLASTING CHEMISTRY FERROUS OR NON-FERROUS ALLOYS FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING KILNS LIGHTING MECHANICAL ENGINEERING METALLURGY OPEN SINTERING OR LIKE APPARATUS OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL,e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL OVENS PERFORMING OPERATIONS PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS RETORTS SEPARATING SOLIDS FROM SOLIDS SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, ORSIFTING OR BY USING GAS CURRENTS SORTING TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	The present invention relates to a method for supplying green iron ore pellets to hardening furnaces, in particular of the moving grate type, the grate carriages being filled with material separated into two different granulometric ranges. The bed of pellets being hardened is therefore composed of equal proportions of green pellets within a finer granulometric range in the lower layer and within a coarser granulometric range in the upper layer. La présente invention concerne un procédé d'alimentation en boulettes crues de minerai de fer dans des fours de durcissement, notamment à grille mobile, le remplissage des chariots à grille étant réalisé par ségrégation granulométrique en deux catégories distinctes. Le lit de boulettes à durcir présente donc une répartition uniforme des boulettes crues selon leur granulométrie, avec les plus petites sur la couche inférieure et les plus grandes sur la couche supérieure. A presente invenção refere-se ao processo de alimentação de pelotas cruas de minério de ferro em fornos de endurecimento, em especial o de grelha móvel, onde o preenchimento dos carros de grelha é feito com segregação granulométrica em duas faixas distintas. O leito de pelotas a ser endurecida será então composto por proporções iguais de pelotas cruas nas faixas granulométricas de menores na camada inferior e maiores na camada superior.