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DOT Code: 512.362-014

Industry: nonfer. metal; smelt. & refin.

Controls furnace to refine or melt nonferrous ore or metal to specifications: Sets furnace controls to regulate flow of air, gas, oil, or current to heat metal to specified temperature. Observes color, fluidity of molten bath, and appearance of metal on bar, to estimate temperature, or measures temperature, using pyrometer. Inserts end of green pole into furnace to prevent oxidation of copper. Adds reagents to remove impurities, according to type of metal processed. Skims slag with rabble, dross hoe, or ladle. Opens blowers to force air through tuyeres to agitate bath, and stirs bath with wooden pole or iron rod to release oxygen. Seals taphole with fire clay and firebrick. Turns handwheel or moves lever to tilt or turn furnace and taps metal into pots for removal to other furnaces [Tapper (nonfer. metal; smelt. & refin.)]. Lifts and transfers ladles of melt, using hoist. Sprays dore or silver crystals with water, and dries them with vacuum drier prior to melting. Samples materials and sends samples to laboratory for analysis [Raw Sampler (smelt. & refin.)]. Sprays molds with bone ash to prevent metal from adhering to mold. May replace defective parts or clean equipment. May operate puncher to clear tuyere holes and allow air to pass through molten copper in converters to burn off impurities. May be designated according to type of furnace operated or product processed.

GOE: 06.02.10 STRENGTH: M GED: R4 M2 L2 SVP: 5 DLU: 77