Job Description:

• 1) Operates machines to recover cryolite from scrap potlining: Sets mill gauge to specified feed rate and adjusts air volume, according to screen analysis from laboratory.

• 2) Sets hearth rheostats and heat controller to specified temperature, and turns valves to adjust rate of flow of steam and oil to burners.

• 3) Starts system of conveyors, grinder, roaster, mixer equipment, cooling and exhaust fans, and burners.

• 4) Moves levers to regulate flow of materials, and adjusts valve to control volume of liquor.

• 5) Turns valve to drain spent liquor and lime hydrate to causticizer tanks.

• 6) Makes titration test, records results, and sends samples to laboratory.

• 7) Observes gauges, indicators, thermometers, and controls to ensure conformity to specifications.