Job Description:

• 1) Tends tanks and related equipment that coats cathode screens with asbestos for use in electrolytic cells: Opens valve to fill cathode tank with caustic liquor.

• 2) Weighs out prescribed quantity of asbestos and dumps it into tank.

• 3) Starts air compressor and opens valve to force asbestos and cell liquor to mixing tank and return it to cathode tank after agitation for specified time.

• 4) Draws sample of resulting slurry and determines specific gravity, using hydrometer.

• 5) Positions cathode screen over cathode tank, using crane.

• 6) Connects vacuum hose to cathode and lowers cathode into tank for asbestos coating, using hoist.

• 7) Observes vacuum gauge to determine number of dips or immersion time necessary to apply asbestos coating of specified thickness to cathode.

• 8) Applies asbestos tape to secure cathode rim.

• 9) Transfers coated cathode to drying area, using crane.

• 10) Records number of cathodes coated, immersion and drying time, and quantity of materials used.

• 11) May tin cathode bars, using tinning compound.

• 12) May cut asbestos paper to size and cover screens and plates with new linings.