Ut-battelle, Inc.

Westmoreland Advanced Materials, Inc.

James R Keiser

James Gordon Hemrick

Kenneth A McGowan

Robert M Cullen

Amul Gupta

Roberta A Meisner

Roberta A Peascoe-Meisner

Camden R Hubbard

J Peter Gorog

A method for improving the insulating character/and or penetration resistance of a liner in contact with at least one of an alkali and/or alkaline environments is provided. The method comprises lining a surface that is subject to wear by an alkali environment and/or an alkaline environment with a refractory composition comprising a refractory aggregate consisting essentially of a calcium hexa aluminate clinker having the formula CA, wherein C is equal to calcium oxide, wherein A is equal to aluminum oxide, and wherein the hexa aluminate clinker has from zero to less than about fifty weight percent CA, and wherein greater than 98 weight percent of the calcium hexa aluminate clinker having a particle size ranging from &#x2212;20 microns to +3 millimeters, for forming a liner of the surface. This method improves the insulating character/and or penetration resistance of the liner.

Methods of use of calcium hexa aluminate refractory linings and/or chemical barriers in high alkali or alkaline environments

A method includes containing a high-temperature alkali salt containing environment using a refractory containment liner containing MgAlOspinel. A method, includes forming a refractory brick containing MgAlOspinel having an exterior chill zone defined by substantially columnar crystallization and an interior zone defined by substantially equiaxed crystallization; and removing at least a portion of the exterior chill zone from the refractory brick containing MgAlOspinel by scalping the refractory brick containing MgAlOspinel to define at least one outer surface having an area of substantially equiaxed crystallization. A product of manufacture includes a refractory brick containing MgAlOspinel including an interior zone defined by substantially equiaxed crystallization; and at least one outer surface having an area of substantially equiaxed crystallization.

MgAl2O4 spinel refractory as containment liner for high-temperature alkali salt containing environments

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Oak Ridge, TN, United States of America

James R Keiser