Kettle Tender I
Overall rating: (N/A)
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Tends series of oil-fired kettles that refine lead: Charges
kettle with lead in molten or pig form, and fires kettle. Adds
specified type and amount of reagent and agitates mixture to
cause impurities, such as antimony, arsenic, bismuth, and tin to
form into dross. Sikms dross off mixture, using ladle, shovel,
or perforated dipper. Throws zinc bricks into kettle and
agitates mixture to desilverize lead. Skims crust of silver and
gold content into basket of press, and compresses dross with
air-driven ram. Pumps lead through reaction cylinder while
chlorine is admitted to form zinc chloride slag.
Skims slag
after completion of reaciton as indicated by color of slag and
molten metal. Pours meatl into molds or dips samples into cold
water to prepare them for laboratory analysis.
May hook pot to
crane and signal Overhead Crane Operator (any industry)
921.663-010 to transfer lead from one kettle to another.
May
crystallize zinc in water-cooled vacuum tank to remove zinc from
desilveirzed lead.
May prodcue antimony crystals from antimonial
lead by mixing prescribed reagents with molten metal in kettle,
by skimming dross, and by cooling bath to specified temperature.
May be known according to speciifc duty performed as
Desilverizer (smelt. & refin.).
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Kettle Tender I
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