【Equipment Overview】

 The oxygen-enriched side-blown furnace is the core equipment for lead paste smelting, suitable for processing various raw materials including lead paste and lead grids from waste lead-acid battery recycling, as well as primary lead ores. Featuring natural gas heating and oxygen-enriched side-blowing process, it delivers high smelting efficiency, low lead content in slag, and excellent environmental performance, representing advanced smelting technology in the secondary lead industry.

【Process Principle】

Raw materials including lead paste, lead grid, and coke are automatically weighed and charged into the furnace. Under an oxygen-enriched atmosphere, lead sulfate decomposes into lead oxide and sulfur dioxide. The furnace atmosphere is then adjusted to a reducing condition, where lead oxide is reduced to metallic lead via carbon reduction. The final products are crude lead and smelting slag.

【Technical Parameters】

● Furnace area: 2㎡~30㎡

● Annual processing capacity: 20,000~300,000 tons

● Heating method: Natural gas

● Lead content in slag: ＜2.0%

● Slag rate in crude lead: ＜10%

【Technical Advantages】

● Wide raw material adaptability: Capable of processing various raw materials including waste battery lead paste, lead grid, and primary lead ore.

● Leading smelting performance: Metallic lead content in slag is stably controlled below 2%, with a high metal recovery rate.

● Energy-saving and eco-friendly: Vertical structure with water jacket design reduces heat loss, minimizes flue gas volume, and achieves low dust emission.

● Continuous production: Uninterrupted operation with high production efficiency and high degree of automation.

● Easy maintenance: Main spare parts have a service life of over 2 years, with modular maintenance design.

● Siphon lead discharge: Siphon-type lead outlet can be directly connected to the ingot casting system.

● Compact footprint: Shaft furnace structure requires a smaller area compared to furnaces of the same capacity.