Material property development for refractories

Technical Report · Tue May 01 04:00:00 EDT 1990

DOI:https://doi.org/10.2172/5719989· OSTI ID:5719989

Shin, S; Buykukoturk, O ^[1]

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1. Massachusetts Inst. of Tech., Cambridge, MA (USA). Dept. of Civil Engineering

The application area of this research is the analysis and design for high temperature high pressure vessels, with a focus on slagging coal gasifiers. Objectives are (1) to characterize the short-term compressive behavior of refractories at elevated temperatures, (2) to expand and refine the existing data, and (3) to develop a model for predicting creep behavior of refractories at elevated temperature. The focus was on refractory materials for slagging coal gasifier linings. Four categories of refractory materials were chosen for examination. Those are dense brick, dense castable, insulating castable, and insulating firebrick refractories. The selected dense brick materials studied for thermo-mechanical properties were high alumina and high chromia refractories manufactured by cold pressing and sintering (CPS). The cold-pressed and sintered high alumina refractory consists of 90% Al{sub 2}O{sub 3} (A) and 10% Cr{sub 2}O{sub 3} (C). The cold-pressed high chromia refractory consist of 82% Cr{sub 2}O{sub 3} and 18% MgO (M), a picochromite (MgCr{sub 2}O{sub 4}) spinel matrix and fused pirochromite grains. The castable refractories for the thermomechanical properties studies were manufactured by mixing them with water room temperature. The dense castable (DC) refractory consists of 95% Al{sub 2}O{sub 3} and 4.6% CaO (Ca). The insulating castable (IC) refractory consists of 54.5% Al{sub 2}O{sub 3} and 36.3% SiO{sub 2}. Insulating firebrick consists of 39% Al{sub 2}O{sub 3} and 44% SiO{sub 2}. 71 refs., 72 figs., 2 tab.

• Research Organization: Oak Ridge National Lab., TN (United States); Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Civil Engineering
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5719989
• Report Number(s): ORNL/Sub-79-07862/02; ON: DE91014979
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
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& Peat-- Gasification
20 FOSSIL-FUELED POWER PLANTS
200104 -- Fossil-Fueled Power Plants-- Components
36 MATERIALS SCIENCE
360203 -- Ceramics
Cermets
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360204 -- Ceramics
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42 ENGINEERING
420500 -- Engineering-- Materials Testing
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
COAL GASIFICATION
CONTAINERS
CREEP
DENSITY
EQUIPMENT
EXPANSION
FOSSIL-FUEL POWER PLANTS
GASIFICATION
LINERS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MATERIALS TESTING
MECHANICAL PROPERTIES
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POWER PLANTS
PRESSURE VESSELS
REFRACTORIES
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SPECIFIC HEAT
TEMPERATURE EFFECTS
TESTING
THERMAL CONDUCTIVITY
THERMAL EXPANSION
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS