Designed for high-efficiency primary and secondary lead recovery, our rotary furnace is the ideal lead melting equipment and lead melting machine for processing lead-acid battery scrap, lead paste, and crude lead. As a professional manufacturer of industrial recycling machinery, Guanma Machinery lead melting furnaces and smelting systems are engineered to deliver a 99% recovery rate and high-purity metal extraction.
Lead Rotary Furnace Design
Lead smelting furnace designed and developed by guanma machinery is mainly composed ofthe rotary furnace body, hydraulic transmission system, combustion system, sealing system, lead discharge system, operating platform, control system and environmental protection equipments.
Raw Materials
Our lead rotary furnace is designed to process a wide range of lead-containing materials:
Lead paste & grids from spent lead-acid battery.
Lead sulfide & oxide ores (galena, cerussite, anglesite).
Lead-containing slags, Lead anode slimes from copper refining.
Lead-containing ash/dust from bag-house.
Lead scrap—cable sheathing, printing metals, etc.
Final Product
Crude Lead Ingots
Crude Lead
The processing of lead-bearing materials in our lead smelting rotary furnace yields two primary products:
Crude Lead (Bullion): The main product, typically containing 96-99% lead. This crude lead is suitable for further electrolytic refining or fire refining to produce commercial-grade lead with purities exceeding 99.99%.
Lead-Rich Slag: A secondary product that can be further processed in fuming furnaces to recover valuable zinc, indium, and germanium, while the final slag can be sold to the cement industry as a raw material.
Lead-antimony or lead-calcium alloy ingot on request.
If you want to undertake a crude lead refining project, you can check the crude lead refining plant.
The crude lead refining and ingot casting production line consists of a refining pot, alloying pot, dust collection hood, operating platform, linear casting machine, lead fume purifier, and control system. After smelting the lead purity can reach to more than 99.985%.
Lead Smelting Process Flow
Lead Smelting Rotary Furnace Process Flow
Feed Preparation: Lead-bearing materials are blended with fluxes and reagents. The mixture is often pelletized or agglomerated to improve feed characteristics and reduce dusting during charging.
Charging: Prepared feed is continuously or batch-charged into the lead melting rotary furnace through a sealed feed port to maintain a negative pressure and prevent fugitive emissions.
Smelting: The furnace rotates, efficiently mixing the charge. Fuel and heated air or oxygen-enriched air are injected. Under the intense heat (1100-1350°C), reduction reactions occur, melting the charge and separating it into molten lead and slag phases.
Reduction (if applicable): For oxidative smelting of sulfide feeds (e.g., lead concentrate), a reducing agent is added to reduce lead oxide to metallic lead.
Settling and Separation: Molten lead (high density) settles to the bottom of the furnace, while the lighter slag floats on top. This allows for separate tapping.
Tapping: Molten lead is tapped periodically through a tap hole for casting into crude lead blocks or transferred to refining kettles. Slag is tapped separately from a higher outlet.
Off-Gas Handling: High-temperature flue gases, rich in SO₂, pass through a waste heat boiler to recover energy. Gases are then cooled and cleaned in a dedusting system before being sent to a sulfuric acid plant or other treatment.
Dust Recycling: Collected dust (rich in lead and other metals) is returned to the furnace feed, maximizing metal recovery.
This process can be adapted for both batch and continuous operation.
Lead Smelting Furnace Technical Parameter
Lead Smelting Furnace Technical Parameters
Working voltage can be customized, and if you have other requrement and want to know more details, please contact us.(The data in this table are for reference only)
| ltems | Technical Data |
| Raw Materials Feeding Capacity | 5t/Furnace,10t/Furnace,20t/Furnace,40t/Furnace,60t/Furnace |
| Processing Capacity | 2t,3t,5t,10t,15t,20,25t,30t,40t,50t...Lead Contained Materials/Furnace |
| Rated Power | Based on Furnace Capacity |
| Furnace Size | Based on Furnace Capacity |
| Furnace Material | Boiler SteelQ345,Thickness: 20mm |
| Refractory Material | 18 Magnesia-Chrome Brick, Quantity: Based on Furnace Capacity |
| Rotation Angle | 360° |
| Rotation Speed | 0-1rpm |
| Smelting Time | 6~8h(Dependson Materials Condition) |
| Nature Gas Consumption | ≤300m3/h(Diesel Separately Calculated) |
| Discharged Crude Lead Purity | 95%-98% |
| Land Space Furnace | Based on Furnace Capacity |
| Environmental Protection Equipment | Based on Furnace Capacity |
Lead Smelting Plant Advantages
High Metal Recovery Rates: lead recovery rates exceed 98%, slag Pb <2 %.
Energy Efficiency: Oxygen enrichment technology intensifies smelting and reduces fuel consumption.
Versatile Melting & Smelting Capabilities: Functioning as top-tier lead melting equipment, it efficiently handles various raw materials with precise temperature control, ensuring minimal metal loss during the phase change.
PLC control: PLC control systems allow for precise control over temperature, rotation speed, and feeding rate, ensuring consistent operation and product quality.
Reliability and Durability: Lead melting machine features durable refractory linings (high alumina and magnesia carbon bricks) to withstand extreme temperatures and prolong service life.
Why Choose Our Lead Smelting Solution?
Guanma Machinery deliver more than just equipment; we provide integrated metallurgical solutions. from feed characterization and furnace design to installation supervision, operator training, and ongoing technical support. We focus on maximizing your return on investment through efficient, reliable, and environmentally sound technology tailored to your specific raw materials and production goals. Contact us today to discuss how our lead smelting furnace can enhance your operations.
Contact Us
Please specify your requirement by referring to the following aspects:
1-What kind of raw material do you want to process?
2-How many tons raw material do you want to process per day?
3-When will you want to start this project?
4-How is your budget of machine?
5-Which point that you really focus on?(We have customized service for each client)
