Pneumatic Gunning of Refractory Castables

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Title: Pneumatic Gunning of Refractory Castables

Author(s): E. C. Tinsley and H. L Kalousek

Publication: Special Publication

Volume: 14

Issue:

Appears on pages(s): 139-154

Keywords:

Date: 3/1/1978

Abstract:
Castable refractories can be suc-cessfully applied by gunning. The dry-mix method is generally considered superior to wet-mix. Proper proportioning of appropriate mix ingredients, careful predampening techniques, and thorough mixing before charging the dry-gun equipment are essential to obtaining high quality and uniformity of the material in place. Properties of gunned and cast refractories are compared, and effect of varying amounts of predampening water is noted. Recommendations cover proportioning and application techniques, selection of appropriate nozzles, and adaptations nec-essary for hot patching.