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Title: Refractory lining system for high wear area of high temperature reaction vessel

Abstract

A refractory-lined high temperature reaction vessel comprises a refractory ring lining constructed of refractory brick, a cooler, and a heat transfer medium disposed between the refractory ring lining and the cooler. The refractory brick comprises magnesia (MgO) and graphite. The heat transfer medium contacts the refractory brick and a cooling surface of the cooler, and is composed of a material that accommodates relative movement between the refractory brick and the cooler. The brick is manufactured such that the graphite has an orientation providing a high thermal conductivity in the lengthwise direction through the brick that is higher than the thermal conductivity in directions perpendicular to the lengthwise direction. The graphite preferably is flake graphite, in the range of about 10 to 20 wt %, and has a size distribution selected to provide maximum brick density. The reaction vessel may be used for performing a reaction process including the steps of forming a layer of slag on a melt in the vessel, the slag having a softening point temperature range, and forming a protective frozen layer of slag on the interior-facing surface of the refractory lining in at least a portion of a zone where the surface contacts the layer ofmore » slag, the protective frozen layer being maintained at or about the softening point of the slag.« less

Inventors:
 [1];  [2]
  1. (Export, PA)
  2. (Duisburg, DE)
Issue Date:
Research Org.:
American Iron and Steel Inst., Pittsburgh, PA (United States)
OSTI Identifier:
871854
Patent Number(s):
5811057
Assignee:
Steel Technology Corporation (Washington, DC) IDO
DOE Contract Number:  
FC07-89ID12847
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
refractory; lining; wear; temperature; reaction; vessel; refractory-lined; comprises; constructed; brick; cooler; heat; transfer; medium; disposed; magnesia; mgo; graphite; contacts; cooling; surface; composed; material; accommodates; relative; movement; manufactured; orientation; providing; thermal; conductivity; lengthwise; direction; directions; perpendicular; preferably; flake; range; 10; 20; wt; size; distribution; selected; provide; maximum; density; performing; process; including; steps; forming; layer; slag; melt; softening; protective; frozen; interior-facing; portion; zone; maintained; frozen layer; medium disposed; temperature reaction; vessel comprises; process including; size distribution; thermal conductivity; temperature range; heat transfer; reaction vessel; relative movement; transfer medium; provide maximum; reaction process; facing surface; refractory lining; refractory brick; surface contact; surface contacts; distribution selected; directions perpendicular; lining constructed; /266/501/

Citation Formats

Hubble, David H., and Ulrich, Klaus H. Refractory lining system for high wear area of high temperature reaction vessel. United States: N. p., 1998. Web.
Hubble, David H., & Ulrich, Klaus H. Refractory lining system for high wear area of high temperature reaction vessel. United States.
Hubble, David H., and Ulrich, Klaus H. Thu . "Refractory lining system for high wear area of high temperature reaction vessel". United States. https://www.osti.gov/servlets/purl/871854.
@article{osti_871854,
title = {Refractory lining system for high wear area of high temperature reaction vessel},
author = {Hubble, David H. and Ulrich, Klaus H.},
abstractNote = {A refractory-lined high temperature reaction vessel comprises a refractory ring lining constructed of refractory brick, a cooler, and a heat transfer medium disposed between the refractory ring lining and the cooler. The refractory brick comprises magnesia (MgO) and graphite. The heat transfer medium contacts the refractory brick and a cooling surface of the cooler, and is composed of a material that accommodates relative movement between the refractory brick and the cooler. The brick is manufactured such that the graphite has an orientation providing a high thermal conductivity in the lengthwise direction through the brick that is higher than the thermal conductivity in directions perpendicular to the lengthwise direction. The graphite preferably is flake graphite, in the range of about 10 to 20 wt %, and has a size distribution selected to provide maximum brick density. The reaction vessel may be used for performing a reaction process including the steps of forming a layer of slag on a melt in the vessel, the slag having a softening point temperature range, and forming a protective frozen layer of slag on the interior-facing surface of the refractory lining in at least a portion of a zone where the surface contacts the layer of slag, the protective frozen layer being maintained at or about the softening point of the slag.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

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