Method of lining a blast furnace
AssigneeMagneco/Metrel, Inc.
InventorsMadjid Soofi, James S. Irwin
Life of this patent
Estimating the term…
Abstract
A method for lining a blast furnace or other metallurgical vessel in stages uses a plurality of porous consumable forms and a pumpable casting composition. A form member, including a rigid support frame and a porous consumable form mounted thereto, is installed in a lower portion of the vessel being lined, and is spaced from the vessel wall. Casting composition is then pumped into the space between the consumable form and the vessel wall, and is permitted to harden. Then, another form member is positioned above the first, and casting composition is pumped into the space between the second form member and the vessel wall. This process is repeated, using stacked form members, until the refractory lining is completely installed.
Claims17
A method of installing a refractory lining in a metallurgical vessel including a steel shell, comprising the steps of:
- installing a first form member including a first rigid frame and, mounted to the first rigid frame, a first porous consumable form which facilitates the transmission and evaporation of liquid, in the metallurgical vessel at a distance from the shell;
- pumping a casting composition which includes a granular refractory and a liquid carrier, between the steel shell and the first form member;
- hardening the casting composition by transmitting at least some of the liquid carrier through the first porous consumable form;
- installing a second form member including a second rigid frame and a second porous consumable form mounted to the second frame, above the first form member at a distance from the shell;
- injecting a casting composition which includes a granular refractory and a liquid carrier, between the steel shell and the second form member;
- and
- hardening the casting composition by transmitting at least some of the liquid carrier through the second consumable forms;
- wherein each porous consumable form has a height of at least about six feet and comprises an open-mesh screen.
A method of installing a refractory lining in a metallurgical vessel including a steel shell, comprising the steps of:
- a) installing a form member including a rigid frame and a porous consumable form around the frame, in a lower level of the metallurgical vessel at a distance from the shell;
- b) pumping a casting composition which includes a granular refractory and a liquid carrier, into a space between the form member and the shell;
- c) hardening the casting composition by removing at least some of the liquid carrier;
- d) installing an additional form member including a rigid frame and a porous consumable form around the frame, in a higher level of the metallurgical vessel at a distance from the shell;
- e) pumping additional casting composition which includes a granular refractory and a liquid carrier, into a space between the additional form member and the shell;
- f) hardening the additional casting composition by removing at least some of the liquid carrier;
- and
- g) repeating steps d)-f) until the refractory lining is completely installed;
- h) wherein steps a)-c) define a first stage of installing the refractory lining, steps d)-f) define another stage of installing the refractory lining, and the installation is completed in no more than about ten stages having an average height of at least six feet per stage.
A method of installing a refractory lining in a metallurgical vessel including a steel shell, comprising the steps of:
- a) installing a form member at least about six feet in height which includes a rigid frame and a porous consumable form mounted to the frame, in the metallurgical vessel at a distance from the shell;
- b) pumping a casting composition which includes a granular refractory and a liquid carrier, into a space between the form member and the shell;
- c) hardening the casting composition by removing at least some of the liquid carrier through the porous consumable form;
- and
- d) repeating steps a)-c) a plurality of times until the refractory lining has been completely installed;
- wherein performance of steps a)-d) is completed using not more than eight form members.
Dependencies are inferred from the claim text.