|
|
       CODE: 511.582-010 Buy the DOT:Download/CD-ROM
TITLE(s): LEACHER (smelt. & refin.)
Controls equipment to leach out metal from ore in solution: Weighs sample of solution and
evaporates moisture from it, using heater. Reweighs sample to determine percentage of solid material
in solution. Siphons water from solution to obtain specified concentration, following chart. Turns
valves to feed chemicals, such as cyanide or acid, into tank of ground ore or filtered slime. Starts
mechanical agitators and observes percolation of solution to ascertain dissolution of ore. Tests
solution with hydrometer to determine degree of ore concentration. Obtains sample of solution for
laboratory analysis. May supervise workers in loading and excavating leaching tanks. May tend
filtering machine to separate fluids from metal. May tend pumps to force ground ore and solution
into or from tanks. May lubricate equipment and clean tank with water hose. May heat solution in
tank with steam and add premeasured amounts of solid materials, such as manganese. May be designated
according to ore leached as Molybdenum-Leaching-Plant Operator (smelt. & refin.).
GOE: 06.02.10 STRENGTH: L GED: R3 M2 L2 SVP: 5 DLU: 77
ONET CROSSWALK: 92962 Separating, Filtering, Clarifying, Precipitating, and Still Machine Operators and Tenders
|
