EP0298004A1 - Sample core for a blast furnace - Google Patents

Sample core for a blast furnace Download PDF

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Publication number
EP0298004A1
EP0298004A1 EP88440053A EP88440053A EP0298004A1 EP 0298004 A1 EP0298004 A1 EP 0298004A1 EP 88440053 A EP88440053 A EP 88440053A EP 88440053 A EP88440053 A EP 88440053A EP 0298004 A1 EP0298004 A1 EP 0298004A1
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EP
European Patent Office
Prior art keywords
probe
piston
blast furnace
core
coring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP88440053A
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German (de)
French (fr)
Inventor
Guy Ourth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institut de Recherches de la Siderurgie Francaise IRSID
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Institut de Recherches de la Siderurgie Francaise IRSID
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Application filed by Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Publication of EP0298004A1 publication Critical patent/EP0298004A1/en
Withdrawn legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/24—Test rods or other checking devices

Definitions

  • the invention relates to a coring probe.
  • It relates more particularly to core drilling carried out in reduction melting furnaces such as steel blast furnaces.
  • the object of the invention is to propose a probe allowing a faithful reconstruction of the different zones of the blast furnace, despite the possible compaction of the carrot.
  • the invention provides a coring probe provided with a position sensor of the nose of the core inside the probe. Knowing at all times this position on the one hand, which corresponds to the length of the carrot in formation, and knowing in a conventional manner the stroke of the probe inside the blast furnace on the other hand, it is easy to deduce at any time the evolution of the compaction or, if you prefer, the evolution of the compaction over the length of the core, and take it into account for the theoretical reconstruction of the areas explored.
  • the senor comprises a piston capable of sliding in the probe under the thrust of the core and a device for measuring the sliding of the piston.
  • the piston is mounted at low friction in the probe.
  • the measurement device comprises a cable linked to the piston and winding with a drum with return voltage, the rotation of which provides the desired measurement indication.
  • the rotation of the drum is measured by a potentiometer.
  • the probe 1 is a tubular member introduced inside the blast furnace through the orifice of a nozzle.
  • a rear end 2 of the probe is taken in a device for holding and guiding a probe introduction bench, known per se (cf. documents FR 2 605 396 and FR 2 606 035.
  • the other end (front end) 3 of the probe 1 is shaped according to an elliptical section 4, in a plane inclined for example at 45 °, so as to have a leading edge sharpened with a favorite bevel health coring.
  • the internal tubular wall 5 of the probe has a substantially constant diameter (of 250 mm for example) at least over the entire extent used for coring, with the exception of a short section at the end 3, where the passage section is narrowed by the presence of a refractory sheet coating (5 mm thick for example).
  • a cylindrical piston 7 shown in Figure 1 in the position of maximum extension is a cylindrical piston 7 shown in Figure 1 in the position of maximum extension.
  • the piston 7 is capable of sliding inside the probe 1, its freedom of sliding being only braked by friction members 8 (O-rings for example) bearing on the internal wall 5 of the probe 1.
  • the front face of the piston 7 carries a central rod at the end of which is provided a support plate 9, perpendicular to the axis 10 of the probe, and coming, when the piston is in its position of maximum extension, substantially intersect the elliptical section 4 along its minor axis.
  • This support plate 3 is intended to come into contact with the nose of the carrot and thus allow the latter to push back, as it enters the probe, the piston 7 towards the rear of the probe.
  • the braking of the piston 7 is insufficient to significantly increase the compaction of the core.
  • the rear face of the piston 7 has a hooking point 11 at one end of a cable 12, the other end of which is wound on a drum 13.
  • the latter is mounted, in a manner known per se, with a permanent elastic return in the direction of its winding, so that the cable 12 is always taut; the elastic return force is however insufficient to pull the braked piston 7 alone.
  • the rotation of the drum 13 causes a potentiometer 13 to rotate, the indications of which are directly a function of the winding of the cable 12, in other words, of the recoil of the piston in the probe and therefore of the progression of the nose of the carrot inside the probe, i.e. the actual length of the core.
  • the abscissa x measures the advance of the probe and the ordinate y the actual length of the core measured in accordance with the invention.
  • the origin is taken at the nose of the introduction nozzle and the vertical axis in phantom represents the axis of the blast furnace.
  • a cavity called a vortex cavity, forms at the nose of the nozzle and extends over a distance of about a meter or a little more from it.
  • a filling introduced by the nozzle prior to the coring optionally makes it possible to complete the filling. It is this filling which explains that the curves of figure 2 start at the point of origin of the graph determined as being the nose of the nozzle.
  • the curves obtained are located below the curve A, taking into account the compaction which reduces y with respect to x.
  • Curves B and C correspond to two tests performed on different dates on a blast furnace stopped for about 6 hours, the first with a probe advance speed of 0.2 m / s and the second of 0.14 m / s.
  • the invention makes it possible to follow the instantaneous compaction index, represented by the slope at each point of the curves obtained. It can be seen on the two curves B and C that the instantaneous compaction index is substantially constant over the first part of the probe stroke (apart from a local anomaly for curve C), then drops suddenly to another substantially constant value lower on a second part of the race (from around 3.50 m of race).
  • the knowledge of compaction at all times makes it possible to draw exact consequences from the subsequent analysis of the carrot.
  • the drum 13 was fixed in position relative to the probe, the latter could also be fixed relative to the blast furnace.
  • the piston 7 driven by the probe during the coring would cause the cable to unwind on the drum, with, however, an offset with respect to the advance of the probe, due to the penetration of the core therein. It is easily understood that the difference between the length of penetration of the probe and the length of core, that is to say the effective compaction, would be directly measured.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

This core sampler intended especially for coring into the dead man of a blast furnace comprises a position sensor (7, 13, 14) for the tip of the core inside the sampler. The sensor comprises a piston (7) capable of sliding in the sampler (1) under the thrust of the core and a device (12, 13, 14) for measuring the sliding of the piston. The measuring device (12, 13, 14) comprises a cable (12) attached to the piston (7) and wound under return tension onto a drum (13) whose rotation shows the required measurement. <IMAGE>

Description

L'invention concerne une sonde de carottage.The invention relates to a coring probe.

Elle concerne plus particulièrement les carottages effectués dans les fours de fusion réduction tels que les hauts fourneaux sidérurgiques.It relates more particularly to core drilling carried out in reduction melting furnaces such as steel blast furnaces.

Parmi les divers sondages effectués au coeur d'un haut fourneau, il est connu de procéder notamment à un carottage dans "l'homme mort", c'est-à-dire le massif de matières carbonnées solides situé au centre du haut fourneau au-dessus du creuset. On pourra se reporter à ce sujet aux demandes de brevet FR 2 605 396 et FR 2 606 035.Among the various soundings carried out in the heart of a blast furnace, it is known to proceed in particular to a coring in "dead man", that is to say the solid mass of solid carbonaceous materials located in the center of the blast furnace - above the crucible. Reference may be made to this subject to patent applications FR 2 605 396 and FR 2 606 035.

L'analyse ultérieure de la carotte retirée permet théoriquement de resituer les composants dans les différentes zones du haut fourneau.The subsequent analysis of the removed core theoretically allows the components to be located in the different areas of the blast furnace.

Cependant, cette reconstitution est perturbée par la compaction de la carotte au fur et à mesure de son introduction dans la sonde.However, this reconstitution is disturbed by the compaction of the carrot as it is introduced into the probe.

Le but de l'invention est de proposer une sonde permettant une reconstitution fidèle des différentes zones du haut fourneau, malgré la compaction éventuelle de la carotte.The object of the invention is to propose a probe allowing a faithful reconstruction of the different zones of the blast furnace, despite the possible compaction of the carrot.

A cet effet, l'invention propose une sonde de carottage munie d'un capteur de position du nez de la carotte à l'intérieur de la sonde. Connaissant à chaque instant cette position d'une part, qui correspond à la longueur de la carotte en formation, et connaissant de manière classique la course de la sonde à l'intérieur du haut fourneau d'autre part, il est facile d'en déduire à chaque instant l'évolution de la compaction ou, si l'on préfère, l'évolution de la compaction sur la longueur de la carotte, et d'en tenir compte pour la reconstitution théorique des zones explorées.To this end, the invention provides a coring probe provided with a position sensor of the nose of the core inside the probe. Knowing at all times this position on the one hand, which corresponds to the length of the carrot in formation, and knowing in a conventional manner the stroke of the probe inside the blast furnace on the other hand, it is easy to deduce at any time the evolution of the compaction or, if you prefer, the evolution of the compaction over the length of the core, and take it into account for the theoretical reconstruction of the areas explored.

Avantageusement, on s'efforce parallèlement de réduire la compaction grâce à un court tronçon de sonde adjacent à l'ouverture prévu avec un diamètre intérieur légèrement réduit par rapport au reste de la sonde. Une fois franchi le tronçon rétréci, la carotte progresse avec un minimum de frottements dans la sonde. La sonde est de préférence à ouverture biseautée pour pénétrer plus facilement dans le matériau exploré.Advantageously, efforts are made in parallel to reduce the compaction by means of a short section of probe. adjacent to the opening provided with an inside diameter slightly reduced compared to the rest of the probe. Once the narrowed section has been crossed, the carrot progresses with a minimum of friction in the probe. The probe is preferably with a beveled opening to more easily penetrate the material explored.

Avantageusement, le capteur comprend un piston susceptible de glisser dans la sonde sous la poussée de la carotte et un dispositif de mesure du coulissement du piston.Advantageously, the sensor comprises a piston capable of sliding in the probe under the thrust of the core and a device for measuring the sliding of the piston.

Avantageusement, le piston est monté à frottement faible dans la sonde.Advantageously, the piston is mounted at low friction in the probe.

Avantageusement, le dispositif de mesure comprend un câble lié au piston et s'enroulant avec un tambour à tension de rappel, dont la rotation fournit l'indication de mesure recherchée.Advantageously, the measurement device comprises a cable linked to the piston and winding with a drum with return voltage, the rotation of which provides the desired measurement indication.

Avantageusement, la rotation du tambour est mesurée par un potentiomètre.Advantageously, the rotation of the drum is measured by a potentiometer.

D'autres caractéristiques et avantages de l'invention ressortiront de la description suivante d'un mode préféré de réalisation. Il sera fait référence au dessin annexé sur lequel :

  • - la figure 1 est une vue latérale, avec coupe partielle, d'une sonde conforme à l'invention ; et
  • - la figure 2 est un graphique de carottage.
Other characteristics and advantages of the invention will emerge from the following description of a preferred embodiment. Reference will be made to the attached drawing in which:
  • - Figure 1 is a side view, partly in section, of a probe according to the invention; and
  • - Figure 2 is a coring graph.

La sonde 1 est un organe tubulaire introduit à l'intérieur du haut fourneau par l'orifice d'une tuyère. Une extrémité arrière 2 de la sonde est prise dans un dispositif de maintien et guidage d'un banc d'introduc­tion de sonde, connu en soi (cf. les documents FR 2 605 396 et FR 2 606 035.The probe 1 is a tubular member introduced inside the blast furnace through the orifice of a nozzle. A rear end 2 of the probe is taken in a device for holding and guiding a probe introduction bench, known per se (cf. documents FR 2 605 396 and FR 2 606 035.

L'autre extrémité (extrémité avant) 3 de la sonde 1 est conformée selon une section elliptique 4, dans un plan incliné par exemple à 45°, de manière à présenter un bord d'attaque aiguisé en biseau favori­ sant le carottage.The other end (front end) 3 of the probe 1 is shaped according to an elliptical section 4, in a plane inclined for example at 45 °, so as to have a leading edge sharpened with a favorite bevel health coring.

La paroi tubulaire interne 5 de la sonde présente un diamètre sensiblement constant (de 250 mm par exemple) au moins sur toute l'étendue utilisée pour le carottage, à l'exception d'un court tronçon au niveau de l'extrémité 3, où la section de passage est rétrécie par la présence d'un revêtement en tôle réfractaire (de 5 mm d'épaisseur par exemple).The internal tubular wall 5 of the probe has a substantially constant diameter (of 250 mm for example) at least over the entire extent used for coring, with the exception of a short section at the end 3, where the passage section is narrowed by the presence of a refractory sheet coating (5 mm thick for example).

A l'arrière de ce tronçon rétréci se trouve un piston cylindrique 7 représenté sur la figure 1 en position d'extension maximale. Le piston 7 est susceptible de coulisser à l'intérieur de la sonde 1, sa liberté de coulissement étant seulement freinée par des organes de frottement 8 (des joints toriques par exemple) portant sur la paroi interne 5 de la sonde 1.At the rear of this narrowed section is a cylindrical piston 7 shown in Figure 1 in the position of maximum extension. The piston 7 is capable of sliding inside the probe 1, its freedom of sliding being only braked by friction members 8 (O-rings for example) bearing on the internal wall 5 of the probe 1.

La face avant du piston 7 porte une tige centrale au bout de laquelle est prévue une plaque d'appui 9, perpendiculaire à l'axe 10 de la sonde, et venant, lorsque le piston est dans sa position d'extension maximale, sensiblement intersecter la section elliptique 4 selon son petit axe. Cette plaque d'appui 3 est destinée à venir en contact avec le nez de la carotte et à permettre ainsi à celle-ci de repousser, au fur et à mesure de son entrée dans la sonde, le piston 7 vers l'arrière de la sonde. Le freinage du piston 7 est insuffisant pour augmenter de manière notable la compaction de la carotte.The front face of the piston 7 carries a central rod at the end of which is provided a support plate 9, perpendicular to the axis 10 of the probe, and coming, when the piston is in its position of maximum extension, substantially intersect the elliptical section 4 along its minor axis. This support plate 3 is intended to come into contact with the nose of the carrot and thus allow the latter to push back, as it enters the probe, the piston 7 towards the rear of the probe. The braking of the piston 7 is insufficient to significantly increase the compaction of the core.

La face arrière du piston 7 comporte un point d'accrochage 11 d'une extrémité d'un câble 12 dont l'autre extrémité s'enroule sur un tambour 13. Celui-ci est monté, d'une façon connue en soi, avec un rappel élastique permanent dans le sens de son enroulement, de manière que le câble 12 soit toujours tendu ; la force élastique de rappel est cependant insuffisante pour tirer à elle seule le piston freiné 7.The rear face of the piston 7 has a hooking point 11 at one end of a cable 12, the other end of which is wound on a drum 13. The latter is mounted, in a manner known per se, with a permanent elastic return in the direction of its winding, so that the cable 12 is always taut; the elastic return force is however insufficient to pull the braked piston 7 alone.

La rotation du tambour 13 fait tourner un potentiomètre 13 dont les indications sont directement fonction de l'enroulement du câble 12, autrement dit, du recul du piston dans la sonde et donc de la progression du nez de la carotte à l'intérieur de la sonde, c'est-à-dire de la longueur réelle de la carotte.The rotation of the drum 13 causes a potentiometer 13 to rotate, the indications of which are directly a function of the winding of the cable 12, in other words, of the recoil of the piston in the probe and therefore of the progression of the nose of the carrot inside the probe, i.e. the actual length of the core.

Si la carotte n'était pas compactée, sa longueur serait exactement égale à l'avancée de la sonde au sein du haut fourneau, laquelle est mesurée par des moyens classiques prévus sur le banc d'introduction.If the core were not compacted, its length would be exactly equal to the advance of the probe within the blast furnace, which is measured by conventional means provided on the introduction bench.

Sur le graphique de la figure 2, l'abcisse x mesure l'avance de la sonde et l'ordonnée y la longueur réelle de la carotte mesurée conformément à l'invention. L'origine est prise au nez de la tuyère d'introduction et l'axe vertical en trait mixte représente l'axe du haut fourneau. Il est rappelé que, en cours de fonction­nement du haut fourneau, une cavité, dite cavité tour­billonnaire, se forme au nez de la tuyère et s'étend sur une distance d'environ un mètre ou un peu plus à partir de celui-ci. Lors du sondage, le haut fourneau étant à l'arrêt, cette cavité se remplit naturellement de matériaux solides provenant de la charge du haut fourneau et qui chutent dans cette cavité jusqu'à la remplir pratiquement totalement. Un bourrage introduit par la tuyère préalablement au carottage permet éven­tuellement de compléter le remplissage. C'est ce rem­plissage qui explique que les courbes de la figure 2 démarrent au point d'origine du graphique déterminé comme étant le nez de la tuyère.On the graph of FIG. 2, the abscissa x measures the advance of the probe and the ordinate y the actual length of the core measured in accordance with the invention. The origin is taken at the nose of the introduction nozzle and the vertical axis in phantom represents the axis of the blast furnace. It is recalled that, during operation of the blast furnace, a cavity, called a vortex cavity, forms at the nose of the nozzle and extends over a distance of about a meter or a little more from it. During the survey, the blast furnace being at a standstill, this cavity naturally fills with solid materials coming from the charge of the blast furnace and which fall into this cavity until it is almost completely filled. A filling introduced by the nozzle prior to the coring optionally makes it possible to complete the filling. It is this filling which explains that the curves of figure 2 start at the point of origin of the graph determined as being the nose of the nozzle.

La droite A (y = x) correspond à la courbe théorique obtenue quand il n'y a pas compactage.The line A (y = x) corresponds to the theoretical curve obtained when there is no compaction.

En pratique, les courbes obtenues sont situées en dessous de la courbe A, compte tenu du compactage qui réduit y par rapport à x.In practice, the curves obtained are located below the curve A, taking into account the compaction which reduces y with respect to x.

Les courbes B et C correspondent à deux essais réalisés à des dates différentes sur un haut fourneau arrêté depuis environ 6 heures, le premier avec une vitesse d'avancement de la sonde de 0,2 m/s et le second de 0,14 m/s.Curves B and C correspond to two tests performed on different dates on a blast furnace stopped for about 6 hours, the first with a probe advance speed of 0.2 m / s and the second of 0.14 m / s.

L'invention permet de suivre l'indice de compaction instantané, représenté par la pente en chaque point des courbes obtenues. On observe sur les deux courbes B et C que l'indice de compaction instantané est sensiblement constant sur une première partie de la course de la sonde (à part une anomalie locale pour la courbe C), puis chute brutalement à une autre valeur sensiblement constante inférieure sur une seconde partie de la course (à partir d'environ 3,50 m de course). La connaissance du compactage à chaque instant permet de tirer des conséquences exactes de l'analyse ultérieure de la carotte. Bien entendu, alors que l'on a supposé dans le dispositif décrit ci-dessus que le tambour 13 était fixe en position par rapport à la sonde, celui-ci pourrait aussi être fixé par rapport au haut fourneau. Dans ce cas, le piston 7 entraîné par la sonde lors du carottage provoquerait le déroulement du cable sur le tambour, avec toutefois, un décalage par rapport à l'avancée de la sonde, dû à la pénétration de la carotte dans celle-ci. On comprend aisément qu'on mesurerait alors directement la différence entre longueur de péné­tration de la sonde et longueur de carotte c'est-à-dire la compaction effective.The invention makes it possible to follow the instantaneous compaction index, represented by the slope at each point of the curves obtained. It can be seen on the two curves B and C that the instantaneous compaction index is substantially constant over the first part of the probe stroke (apart from a local anomaly for curve C), then drops suddenly to another substantially constant value lower on a second part of the race (from around 3.50 m of race). The knowledge of compaction at all times makes it possible to draw exact consequences from the subsequent analysis of the carrot. Of course, while it has been assumed in the device described above that the drum 13 was fixed in position relative to the probe, the latter could also be fixed relative to the blast furnace. In this case, the piston 7 driven by the probe during the coring would cause the cable to unwind on the drum, with, however, an offset with respect to the advance of the probe, due to the penetration of the core therein. It is easily understood that the difference between the length of penetration of the probe and the length of core, that is to say the effective compaction, would be directly measured.

Bien que l'invention ait été décrite dans le cadre d'un carottage en haut fourneau, il est clair qu'elle s'applique à toute espèce de carottage, notamment le carottage des sols.Although the invention has been described in the context of coring in a blast furnace, it is clear that it applies to all kinds of coring, in particular soil coring.

Claims (7)

1. Sonde de carottage destinée notamment au carottage dans l'homme mort d'un haut fourneau, caractérisée en ce qu'elle comprend un capteur (7, 13, 14) de position du nez de la carotte à l'intérieur de la sonde.1. Coring probe intended in particular for coring in the dead man of a blast furnace, characterized in that it comprises a sensor (7, 13, 14) for the position of the nose of the carrot inside the probe . 2. Sonde selon la revendication 1, caractérisée en ce que le capteur comprend un piston (7) susceptible de glisser dans la sonde (1) sous la poussée de la carotte et un dispositif de mesure (12, 13, 14) du coulissement du piston.2. Probe according to claim 1, characterized in that the sensor comprises a piston (7) capable of sliding in the probe (1) under the thrust of the core and a device for measuring (12, 13, 14) the sliding of the piston. 3. Sonde selon la revendication 2, caractérisée en ce que le piston (7) est monté à frottement faible dans la sonde (1).3. Probe according to claim 2, characterized in that the piston (7) is mounted with low friction in the probe (1). 4. Sonde selon l'une quelconque des revendica­tions 2 ou 3, caractérisée en ce que le dispositif de mesure (12, 13, 14) comprend un câble (12) lié au piston (7) et s'enroulant sur un tambour (13) à tension de rappel, dont la rotation fournit l'indication de mesure recherchée.4. Probe according to any one of claims 2 or 3, characterized in that the measuring device (12, 13, 14) comprises a cable (12) linked to the piston (7) and wound on a drum (13 ) with return voltage, the rotation of which provides the desired measurement indication. 5. Sonde selon la revendication 5, caractérisée en ce que la rotation du tambour (13) est mesurée par un potentiomètre.5. Probe according to claim 5, characterized in that the rotation of the drum (13) is measured by a potentiometer. 6. Sonde selon l'une quelconque des revendica­tions 1 à 5, caractérisée en ce qu'elle possède une ouverture biseautée (4).6. Probe according to any one of claims 1 to 5, characterized in that it has a beveled opening (4). 7. Sonde selon l'une quelconque des revendica­tions 1 à 6 caractérisée en ce qu'un court tronçon (6) de sonde (1) adjacent à l'ouverture est prévu avec un diamètre intérieur légèrement réduit par rapport au reste (5) de la sonde.7. Probe according to any one of claims 1 to 6 characterized in that a short section (6) of probe (1) adjacent to the opening is provided with an inner diameter slightly reduced compared to the rest (5) of the probe.
EP88440053A 1987-06-30 1988-06-28 Sample core for a blast furnace Withdrawn EP0298004A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8709259A FR2617599B1 (en) 1987-06-30 1987-06-30 CORE PROBE ESPECIALLY FOR BLAST FURNACE
FR8709259 1987-06-30

Publications (1)

Publication Number Publication Date
EP0298004A1 true EP0298004A1 (en) 1989-01-04

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EP88440053A Withdrawn EP0298004A1 (en) 1987-06-30 1988-06-28 Sample core for a blast furnace

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EP (1) EP0298004A1 (en)
FR (1) FR2617599B1 (en)
SU (1) SU1650017A3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108896348B (en) * 2018-07-13 2020-11-17 李刚 Medical wastewater sampling device in wastewater pool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE404259C (en) * 1923-06-30 1924-10-17 Werner Genest Dipl Ing Automatic display device for the material movement processes in fuel furnaces, especially blast furnaces
DE675824C (en) * 1938-04-06 1939-05-19 Richard Gerisch Probe rod arrangement for shaft ovens, especially foundry shaft ovens
US2772006A (en) * 1953-03-11 1956-11-27 Modern Equipment Co Cupola stock line indicator
US3152479A (en) * 1963-03-04 1964-10-13 United States Steel Corp Blast furnace probe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE404259C (en) * 1923-06-30 1924-10-17 Werner Genest Dipl Ing Automatic display device for the material movement processes in fuel furnaces, especially blast furnaces
DE675824C (en) * 1938-04-06 1939-05-19 Richard Gerisch Probe rod arrangement for shaft ovens, especially foundry shaft ovens
US2772006A (en) * 1953-03-11 1956-11-27 Modern Equipment Co Cupola stock line indicator
US3152479A (en) * 1963-03-04 1964-10-13 United States Steel Corp Blast furnace probe

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Publication number Publication date
SU1650017A3 (en) 1991-05-15
FR2617599A1 (en) 1989-01-06
FR2617599B1 (en) 1990-01-12

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