Refractory Materials Repairers, Except Brickmasons

Build or repair furnaces, kilns, cupolas, boilers, converters, ladles, soaking pits, ovens, etc., using refractory materials.

Job Task

• Spreads mortar on stopper head and rod, using trowel, and slides brick sleeves over rod to form refractory jacket.
• Installs clay structures in melting tanks and drawing kilns to control flow and temperature of molten glass, using hoists and hand tools.
• Measures furnace wall, and cuts required number of sheets from plastic block, using saw.
• Bolts sections of wooden mold together, using wrench, and lines mold with paper to prevent adherence of clay to mold.
• Removes worn or damaged plastic block refractory lining of furnace, using hand tools.
• Disassembles mold, and cuts, chips, and smoothes clay structures, such as floaters, drawbars, and L-blocks, using square rule and hand tools.
• Dumps and tamps clay in mold, using tamping tool.
• Mixes specified amounts of sand, clay, mortar powder, and water to form refractory clay or mortar, using shovel or mixing machine.
• Tightens locknuts holding assembly together, spreads mortar on jacket to seal sleeve joints, and dries mortar in oven.
• Climbs scaffolding with hose, and sprays surfaces of cupola with refractory mixture, using spray equipment.
• Transfers clay structures to curing ovens, melting tanks, and drawing kilns, using electric forklift truck.
• Chips slag from lining of ladle, or entire lining when beyond repair, using hammer and chisel.
• Installs preformed metal scaffolding in interior of cupola, using hand tools.
• Relines or repairs ladle and pouring spout with refractory clay, using trowel.
• Dries and bakes new lining by placing inverted lining over burner, building fire in ladle, or by using blowtorch.
• Fastens stopper head to rod with metal pin, to assemble refractory stopper used to plug pouring nozzles of steel ladles.
• Drills holes in furnace wall, bolts overlapping layers of plastic to walls, and hammers surface to compress layers into solid sheets.

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