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Job Description:

  • 1) Tends battery of tanks that precipitate aluminum hydroxide from rich liquor: Schedules filling, seeding, and emptying of precipitator tanks.

  • 2) Opens feedline valves to fill tanks to designated levels with liquor and alumina seed slurry.

  • 3) Adjusts valves to regulate rate of filling precipitators and to maintain specified level in green-liquor tanks.

  • 4) Opens feedline valves to admit measured quantities of aluminum hydrate seed particles into precipitators.

  • 5) Turns valves to agitate mixture with compressed air.

  • 6) Turns valves to control flow of liquor to tanks of secondary thickness.

  • 7) Weighs sample of mixture in flask on platform scale.

  • 8) Reads charts and graphs to determine amount of slurry or liquor required to obtain specified consistency.

  • 9) Signals BOTTOM-PRECIPITATOR OPERATOR to pump mixture from tanks.

  • 10) Records sequence of operations on forms.

  • 11) May lubricate valves and adjust packing glands to prevent leaks.




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End Of Job Description for: "TOP-PRECIPITATOR OPERATOR"
DOT:   511.465-010

Job Number: 11324