摘要:
A hearth refractory assembly is provided to improve gas sealing of a blast furnace hearth. The blast furnace hearth has a metal outer shell and a spool extending outwardly therefrom. The spool has a spool metal outer wall and forms an opening in said hearth metal outer shell. The refractory liner assembly includes a plurality of hearth refractory bricks arranged in a stacked configuration and lining the interior of the hearth metal outer shell and the spool. A liner is positioned between the hearth refractory brick and said hearth metal outer shell or within the spool and covers substantially all of the spool opening. The liner is a sheet made substantially from graphite.
摘要:
Masse à damer pour le maçonnage d'au moins certains des éléments réfractaires d'un revêtement réfractaire d'un récipient métallurgique tel qu'un haut-fourneau, ladite masse à damer étant constituée d'un mélange d'une phase granulaire et d'une phase liant, dans laquelle la phase granulaire et/ou le liant comporte au moins un composant ayant une structure microporeuse ou apte à former une structure microporeuse par cuisson durant la campagne du haut-fourneau. La masse à damer est particulièrement destinée à former le joint entre deux ensembles annulaires concentriques formant une paroi latérale du récipient ou entre une partie inférieure d'un ensemble annulaire intérieur et la périphérie d'une ou plusieurs couches réfractaires formant le fond du récipient.
摘要:
Equipment intended to the remaking and repairing of high furnaces (1) comprising a rotating feed launder (7). The equipment comprises a telescopic projection length (21) which is controlled and mounted on the rotating feed launder (7) and which may be expanded in order to reach, by the combined rotation and inclination of the feed launder (7) and the expansion of the length (21) all the points of the high furnace (1) requiring a treatment. Application to the remaking or repairing of the refractory lining of high furnaces.
摘要:
Die vorliegende Erfindung betrifft ein thermisches Abschirmsystem zur thermischen Abschirmung eines Chargenraums von Hochtemperaturöfen, das mindestens ein Abschirmelement (2) aufweist. Das Abschirmelement (2) weist eine Einfassung (4) aus Refraktärmetallblech(en) (5) und einen in partikulärer und/oder faseriger Struktur vorliegenden, keramischen Werkstoff (8; 10') auf der Basis von Zirkonoxid (ZrÜ2), der in der Einfassung (4) aufgenommen ist, auf.
摘要:
A furnace for conducting a high temperature process under oxidising conditions comprises an outer shell made from a metal, one or more cooling channels formed on or joined to the outer shell and a furnace lining. The furnace lining comprises a backing lining comprising a relatively high thermal conductivity layer positioned adjacent to an inner wall of the outer shell and a working lining positioned inwardly of the layer of relatively high thermal conductivity. The backing lining can comprise a graphite lining or a graphite-containing lining. The rate of heat transfer through the backing lining is sufficiently high to form a protective freeze on the backing lining in the event that the working lining wears away.
摘要:
Es soll ein Formbauteil (1) aus Feuerfestmaterial zur Auskleidung einer Abstichöffnung eines Schachtofens aufgezeigt werden, wobei die Standzeit des Stichlochkanals (2) und damit der gesamten Auskleidung der Abstichöffnung erhöht ist. Es wird vorgeschlagen, dass der Stichlochkanal (2) unterseitig des Formbauteils (1) angeordnet ist, wobei die Breite (B1) des Stichlochkanals (2) vom Ofeninneren zum Ofenäußeren hin zunimmt.
摘要:
A smelting vessel (4) for producing molten metal includes a.refractory lined hearth that in use is in contact with molten slag or molten metal in the smelting vessel, and the hearth includes a plurality of heat pipes (2.1) positioned in a refractory lining of at least a part of the hearth for cooling the refractory lining.
摘要:
The life of a Blast Furnace is determined by the condition of the Hearth. Numerous thermocouples are embedded in the refractory lining and the temperature readings are monitored for sudden temperature increases. These provide warnings about the approach of the hot metal body to the periphery of the Blast Furnace presaging refractory wear leading to failure. Because of the fatal nature of the consequences, the temperature readings have to be interpreted correctly. This invention describes a method whereby the left out refractory lining profile is estimated as well as the thickness of the protective skull. It serves as a guide to continue operation of the furnace, to direct repair work to the critical areas, as well as to suggest replacement of faulty sensors. In the effect, this method serves to increase the working life of Blast Furnaces.