Job Description and Jobs
- 1) Operates pebble mill to grind emery, rouge, and other abrasives and separates them according to fineness by water suspension method: Examines abrasive under microscope to determine grinding time required, and grinds abrasive in pebble mill.
- 2) Turns valve to allow ground particles and water to flow into agitator tank.
- 3) Presses button to start agitator which stirs particles into suspension.
- 4) Stops machine and determines by microscopic examination when particles of particular grade have settled below tank outlet.
- 5) Opens stopcock to allow particles remaining above the outlet to descend into vat.
- 6) Repeats separation process for other grades, regrinding as required.
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Job Number: 5494