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       CODE: 579.382-010 Buy the DOT:Download/CD-ROM
TITLE(s): CALCINER, GYPSUM (concrete prod.)
Controls grinding mills, kettles, and conveyors to grind and dehydrate gypsum rock and transfer
gypsum to storage bins or pulverizing machine: Opens storage bin gates to admit rock into grinding
mill and starts mill. Feels ground rock to determine consistency and adjusts mill as required to
obtain specified consistency. Opens chute to allow ground rock to flow into kettle. Lights fire
under kettle. Reads temperature gauge and regulates fuel feed valve to maintain specified
temperature inside kettle. Collects sample of calcined gypsum for laboratory analysis. Opens chute
after specified time and turns air valve to force calcined gypsum into hot pits for cooling. Starts
bucket elevators and conveyors to move gypsum from pits to storage bins or to ball mill for
pulverizing. May operate rotary drier to dry gypsum rock before calcination.
GOE: 06.02.18 STRENGTH: L GED: R3 M2 L2 SVP: 4 DLU: 77
ONET CROSSWALK: 92965 Crushing, Grinding, Mixing, and Blending Machine Operators and Tenders
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