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U.S. Department of Labor
Industry: Government; Labor
Number of terms: 77176
Number of blossaries: 0
Company Profile:
A professional who tends machine that forces mortar into spaces between firebrick and steel shell of taconite ore furnace. Respnsibilities include: * Inspects furnace to detect discoloration spots which indicate flaws in firebrick inner wall of furnace. * Shovels grout into reservoir of machine. * Attaches airhose to compressed air system and grout hose to nipple on shell of furnace with wrench. * Starts machine and observes pressure gauge to determine when space is filled. * Caps nipple welded onto furnace shell, using wrench. * May mix mortar, using electrically driven paddle wheel. * May dismantle and clean grout machine and equipment, using wrenches, water, and airhoses.
Industry:Professional careers
A professional who tends oil-fired kettles that melt and fume antimony to make antimony oxide. Respnsibilities include: * Charges antimony crystals into melting kettle with hoist, and fires burners. * Regulates temperature according to thermometer readings and color and appearance of metal. * Skims slag from surface of kettle. * Connects trough from melting to fuming kettle, and pours metal into trough by tilting kettle. * Heats metal to specified temperature to vaporize antimony which is drawn to baghouse and condensed as oxide dust. * Fills buggy with antimony oxide from hoppers, and weighs filled buggy on floor scale. * Empties buggy onto conveyor leading to rotating drum in which oxides from different charges are blended. * Transfers blended dust to conveyor leading to automatic bagging machine. * Determines antimony content by casting sample into rod of specified size, weighing it, and referring to standard chart.
Industry:Professional careers
A professional who tends series of oil-fired kettles that refine lead. Respnsibilities include: * 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. * Skims 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 reaction as indicated by color of slag and molten metal. * Pours metal into molds or dips samples into cold water to prepare them for laboratory analysis. * May hook pot to crane and signal overhead crane operator to transfer lead from one kettle to another. * May crystallize zinc in water-cooled vacuum tank to remove zinc from desilverized lead. * May produce 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 specific duty performed as Desilverizer.
Industry:Professional careers
A professional who tends mill that mixes flue dust with water to settle it for shipment. Respnsibilities include: * Opens bin outlet allowing dust to fall into mixing mill. * Dislodges banked dust in bin by hammering sides. * Starts mill and opens valve of water spray. * Opens door of mill allowing moistened dust to fall onto conveyor belt leading to railroad car. * May distribute mixture evenly in car, using shovel.
Industry:Professional careers
A professional who tends rod mills that grind ore, clinkers, and rock into fine particles. Respnsibilities include: * Starts mill and feed conveyors. * Turns valves to feed lime, water, starch, soda ash, and other materials into mill to make slurry. * Pushes button to start screw conveyor that separates coarse particles from slurry and returns them to mill for regrinding. * Obtains sample of ore or slurry in bucket for laboratory analysis. * Weighs sample on balance scales to determine density of slurry. * Turns valves to feed water into mill to obtain specified density of slurry. * Replaces worn rods in mill, using electric hoist. * May record operating time of rod mills and levels of materials in storage bins.
Industry:Professional careers
A professional who tends rod mills that grind ore, clinkers, and rock into fine particles. Respnsibilities include: * Starts mill and feed conveyors. * Turns valves to feed lime, water, starch, soda ash, and other materials into mill to make slurry. * Pushes button to start screw conveyor that separates coarse particles from slurry and returns them to mill for regrinding. * Obtains sample of ore or slurry in bucket for laboratory analysis. * Weighs sample on balance scales to determine density of slurry. * Turns valves to feed water into mill to obtain specified density of slurry. * Replaces worn rods in mill, using electric hoist. * May record operating time of rod mills and levels of materials in storage bins.
Industry:Professional careers
A professional who seals opening around carbon anode, where it protrudes through cover of magnesium refining cell, to prevent leakage of chlorine gas and to secure anode in position. * Applies mixture of asbestos fiber or pulp and water or oil, using trowel.
Industry:Professional careers
A professional who rakes or scrapes flue dust from converter flues or hoppers into larry cars or screw conveyors for shipment to furnaces. * Breaks up packed dust with bar or pole, and hammers sides of hopper with mallet or bar to dislodge contents. * May drive larry car to furnace, and dump load into furnace. * May scrape dust into collecting hoppers. * May measure depth of dust in flue, using sounding chain.
Industry:Professional careers
A professional who rakes or scrapes flue dust from converter flues or hoppers into larry cars or screw conveyors for shipment to furnaces. * Breaks up packed dust with bar or pole, and hammers sides of hopper with mallet or bar to dislodge contents. * May drive larry car to furnace, and dump load into furnace. * May scrape dust into collecting hoppers. * May measure depth of dust in flue, using sounding chain.
Industry:Professional careers
A professional who mixes flux for graphite tubes and replaces tubes and chemical supply tanks on aluminum remelt furnaces. Respnsibilities include: * Mixes silicon aluminum paint solution (flux) and dips ends of new graphite tubes into solution to coat them. * Transports tubes and tanks of chlorine and nitrogen to furnaces, using handtruck. * Turns valves to shut off flow of chlorine and removes tubes from furnace, using handtools. * Discards broken tubes and installs new ones. * Cleans usable tubes, using wire brush, and installs them to specified depth. * Installs replacement tanks of chlorine and nitrogen on furnace, using handtools, and adjusts valves until tank pressure and flowmeters reach specifications. * Records amounts of chemicals and tubes used for each furnace. * Tours furnace area to verify readings of pressure and flowmeter gauges and makes required adjustments.
Industry:Professional careers
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