Document qmdN6Rr4zgQaG50bovMypKopK

REFRASIL APPLICATION BULLETIN Refractory silica In textile form R-2/3 T'rSVr I INSULATION REFRASIL tape helps cut blast furnace maintenance costs At the blast furnace in Armco's Ashland, Kentucky men, in teams of Iwo, musf take turns going to the tap- Works, the power lead for the mud gun, insulated with hole with mud and scrambling back to escape the asbestos wrapping, had to be replaced every 7 to 8 heat. Another good reason for cutting way back on weeks. High temperatures and flexing were the cul the number of times it's necessary. prits. The same lead wrapped with a single layer ol A typical job tor REFRASIL tape REFRASIL tape, has lasted 6 months already without REFRASIL tape is one of the forms of REFRASIL tex failure. True, the REFRASIL costs about five times as tiles. It's a refractory textile prepared by chemically much as asbestos, but based on other savings It converting glass lextiies. It continues to serve at tem makes possible, this is insignificant. peratures where glass, asbestos and other textiles Savings mount fail. It contains no binders or finishes, but can be pro vided with various coatings for improved abrasion re Each new power lead costs about $200. For every sistance and ease of installation. REFRASIL wrapped lead, more than nine asbestos- This outstanding thermal insulation will operate wrapped leads could be required. continuously at temperatures to 1800 F with little or If a lead is replaced when not in action, It takes no change in properties and does not melt or vapor one man to replace it at a cost of about $12.50 per ize until temperatures exceed 3100 F. The same bene hour for two hours. But if, as is more often the case, fits that make it ideal lor mud gun motor lead it fails in use, it becomes much more costly. It takes insulation make it a good choice in many other ap about 3 man-hours tor 6 men to finish sealing the plications where heat is a maintenance headache. It's blast furnace taphole. This added half hour is delay well worth looking at for those jobs in your plant. f time for the furnace at a cost of over $850 per hour. Plugging the taphole when a failed lead puts the mud gun out of commission, is a very unpopular job. Six 8005 1701 PRODUCED BY FORD