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eTool Home   Raw Materials Processing   Smelting   Refining and Casting Refining  Casting Drossing Environmental Controls Maintenance   Engineering Controls   OSHA Lead Requirements ...   Refining and Casting Crude lead produced during smelting operations is remelted in cast iron kettles and refined by the addition of reagents, such as sulfur and caustic soda. The purified lead is then cast into molds or ingots.  Significant lead emissions can occur from poorly controlled refining, casting, and drossing operations. Refining Casting Drossing Casting pigs | eTool Home | Raw Materials Processing | Smelting | Refining and Casting | | Environmental Controls | Maintenance | Engineering Controls | OSHA Lead Requirements | | Scope | Definitions | Additional References | User Guide | Credits |

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