Molten Lead Refining Device

摘要

A molten lead refining device is described which is characterized by a pan to hold the molten lead with an agitator having a vertical rotary shaft with an impeller at its tip placed at the center part of the pan. A circulatory cylinder surrounds said rotary shaft and reaches near the upper part of the impeller. An air intake pipe is provided concentrically in the circulatory cylinder and its lower end reaches the position immediately above the impeller, where the rotation of the impeller sucks in the molten lead in the circulatory cylinder to the lower part of the pan. The lead passes through the outside of the cylinder to its upper part to effect circulation, and in the meantime the impeller also sucks in the air from the air intake pipe into the molten lead. The molten lead refining device is also described wherein the air intake pipe is substantially closed at its upper end and is equipped with an air inflow pipe having a valve to regulate the amount of air suction on its upper part. (ERA citation 10:018860)