Lead Acid Battery Recycling Plant

— Turnkey Lead Acid Battery Recycling Plant

Lead Acid Battery Recycling Plant is a complete, fully automated turnkey system designed to recycle used lead-acid batteries (ULAB) — automotive, truck, forklift, UPS, energy-storage and electric-vehicle batteries — through battery breaking, crushing and separation, lead paste desulfurization, lead smelting and refining, and plastic washing & pelletizing. The plant recovers high-purity lead (up to 99.985% refined lead ingot), polypropylene (PP) plastic granules and sellable sodium sulfate from spent batteries, achieving a lead recovery rate of ≥99% while meeting international environmental emission standards.YuSai Machinery supplies the with turnkey engineering covering plant design, equipment manufacturing, installation, commissioning and operator training.

Product Overview

The Lead Acid Battery Recycling Plant is a turnkey pyrometallurgical recycling facility that converts used lead-acid batteries (ULAB) into refined lead ingots of 99.9–99.985% purity, clean polypropylene granules and industrial-grade sodium sulfate. Four engineered sections — sealed battery breaking and separation, paste desulfurization, rotary smelting, and refining with automatic ingot casting — operate under one integrated control system, with dust, gas and wastewater treatment designed as part of the process flowsheet rather than added on as ancillary equipment.

Why lead-acid recycling is a mature business

Lead-acid batteries remain the most recycled product in the world: their construction is almost entirely recoverable, and secondary lead already supplies more than half of global lead consumption. Two structural advantages drive project economics:

Energy and cost: producing recycled lead consumes only about 35–40% of the energy required for primary lead from ore and costs 30–40% less, so secondary lead competes directly with mined metal.
Regulatory pull: the EU Battery Regulation sets recycling-efficiency targets of 65–80%, US regulations impose strict emission controls on secondary lead smelters, and the Basel Convention governs cross-border movement of spent batteries — compliance-ready equipment is a precondition for licensing.

Lead Acid Battery Recycling Plant Process architecture

Breaking and separation. Whole batteries are crushed in a sealed, water-based circuit: a two-stage crusher reduces them to fragments, while a hydro-separator and sink-float tank split the stream by density into lead paste, lead grids and posts, polypropylene and PE separators. Electrolyte is drained through a closed pipeline into a collection and neutralization system, magnetic separation removes iron terminals, screens classify the lead fraction, and a filter press dewaters lead paste to below 10% moisture.

Desulfurization. Sulfur in the paste is converted to sodium sulfate ahead of smelting. This step matters for two reasons: it prevents SO₂ formation in the furnace and lowers the smelting energy requirement, because desulfurized paste melts more readily than sulfated paste.

Smelting. Paste and grids are blended with reductant and flux and charged into a lead smelting rotary furnace. At controlled temperature the lead is reduced and separated from slag, then tapped as crude lead bullion of 95–98% purity. Furnace off-gas passes through a baghouse and scrubbing train before discharge, and captured dust returns to the charge.

Refining and casting. Crude lead is transferred to refining kettles, where copper, antimony, arsenic, tin and bismuth are removed by dressing and alloying to lift purity to 99.9–99.985%, or to a specified lead alloy grade. Refined lead is cast automatically into ingots, marked and stacked.

By-products and closure. Polypropylene casings are washed and pelletized for reuse in new battery containers; acid is neutralized to pH 6–9 or crystallized into sodium sulfate; process water recirculates with a zero-discharge option.

Scope of supply

YuSai Machinery supplies the complete plant on a turnkey basis: battery-sample testing, process design and mass balance, manufacturing of the breaking and separation, smelting, refining, plastic-washing and environmental systems, installation and commissioning, operator training with full documentation (layout, foundation, P&ID, electrical, O&M manuals), environmental-permit (EIA) support and lifetime spare-parts service. Configurations range from compact lines for regional recyclers to multi-line plants processing up to 1,000 t/day.

Recycling Value Analysis

A typical lead-acid battery consists of approximately 60–70% metallic lead (paste + grids + posts), 5–10% polypropylene casing plastic, 10–15% sulfuric acid electrolyte, and the balance of separators (PE), terminals and other materials. Nearly 99% of a lead-acid battery can be recycled — it is one of the most complete closed-loop recycling models in industry.

Value of recovered materials

Lead paste (PbSO₄, PbO₂, PbO) — ~30–40% of the battery: smelted and refined into lead ingot (99.9–99.985% purity). Recycled lead costs 30–40% less to produce than primary lead, and recycling already supplies over half of global lead demand.
Lead grids & posts (Pb-Ca / Pb-Sb alloy) — ~25–30%: recovered directly as lead alloy for reuse in battery manufacturing and other lead products.
Polypropylene casing — ~5–10%: washed and pelletized into clean PP granules sold to plastic compounders for new battery containers.
Sulfuric acid electrolyte — ~10–15%: neutralized to safe water or converted into industrial sodium sulfate for the detergent and glass industries.
Separators (PE) — ~3–5%: recovered as PE material for co-processing or safe disposal.

Economic efficiency of recycling

Energy saving: producing recycled lead consumes only about 35–40% of the energy required for primary lead production, cutting greenhouse gas emissions proportionally.
Cost saving: recycled lead is 30–40% cheaper than mined lead, a decisive advantage for battery manufacturers and lead consumers.
Environmental compliance: recycling eliminates the disposal risk of hazardous waste; many jurisdictions (e.g., EU Battery Regulation requiring 65–80% recycling efficiency) mandate battery collection and recycling.

Indicative daily profit model (50 t/day plant, for reference only)

Cost — raw materials (50 t spent car batteries at ~1,050/t):1,050/t):52,500
Cost — water, power, gas and consumables (crushing, smelting and refining): ~$4,830
Total cost: ~$57,330
Income — refined lead ingot (25 t at ~2,360/t):2,360/t):59,025
Income — plastic granules (4 t at ~800/t):∗∗800/t):3,222
Total income: ~$62,248
Net profit: ~$4,900 per day

Market prices fluctuate; figures are indicative estimates based on industry reference data and must be verified against your local market before investment.

Applicable Materials

The lead acid battery recycling plant accepts all types of used lead-acid batteries, without manual sorting or pre-dismantling:

Automotive starting batteries (SLI — car, truck, bus)
Electric vehicle (EV / e-rickshaw) batteries
Electric bicycle / scooter batteries
Forklift and industrial traction batteries
UPS / telecom backup batteries
Energy-storage batteries (solar, wind, grid)
Gel, AGM, SLA, VRLA and flooded (wet) batteries
Motorcycle and marine batteries

The plant can also process battery scrap mixes (e.g., from dismantling yards) and is configurable for additional feedstocks such as lead-bearing residues, dross and lead oxide materials.

Product Structure (Main Equipment)

A complete YuSai lead acid battery recycling plant consists of three integrated sections plus auxiliary environmental systems:

Section A — Battery Breaking, Crushing & Separation System

Vibrating feeder & belt conveyor — controlled, steady feeding of whole batteries
Battery crusher / hammer crusher — sealed two-stage crushing to 50–100 mm fragments, then 5–10 mm particles
Hydro-separator (hydrodynamic separator) — water-based separation of heavy lead fraction from light plastics
Sink-float separation tank — separates PP (floats) from lead paste and metals (sink)
Vibrating screens — size classification of lead particles
Magnetic separator — removes iron impurities (terminals, steel parts)
Lead paste collection & dewatering system — filter press or dewatering screen to recover lead paste (<10% moisture)
Acid drainage & collection tank — closed-loop collection of sulfuric acid electrolyte

Section B — Lead Smelting & Refining System

Lead smelting rotary furnace (5–60 t/batch) — melts paste + grids with reducing agents into crude lead bullion (95–98% purity)
Vibrating charging channel — automatic feeding of blended charge into the furnace
Crude lead refining kettle / refining furnace — removes Cu, Sb, As, Sn, Bi to reach 99.9–99.985% purity
Automatic ingot casting machine — casts and stacks refined lead ingots automatically
Slag handling system — discharges and recycles smelting slag

Section C — Plastic Recycling & Auxiliary Systems

Plastic washing line — multi-stage washing of PP fragments
Plastic granulator / pelletizing machine — converts clean PP into market-ready granules
Baghouse dust collector — captures ≥99.5% of dust from crushing and smelting
Wet scrubber & activated carbon tower — removes SO₂, acidic fumes and harmful gases
Acid neutralization tank (ETP) — neutralizes process water to pH 6–9 before discharge or reuse
Cooling water circulation system — closed-loop cooling for furnaces and casting
PLC control cabinet — centralized automatic control and monitoring

Lead Acid Battery Recycling Plant Process Flow

The recycling process follows a proven six-stage flow, from whole battery to finished products:

Stage 1 — Battery Breaking & Crushing Whole used batteries are fed by conveyor into the sealed crusher. The two-stage hammer crusher first breaks batteries into 50–100 mm fragments (sealed design prevents electrolyte splashing), then further crushes to 5–10 mm particles to fully liberate lead paste, grids and plastics.

Stage 2 — Hydraulic Separation The crushed material enters the hydro-separator. Heavy lead paste and lead grids sink; light plastics (PP) float and are skimmed off; the paste fraction is dewatered by filter press to <10% moisture. Magnetic separation removes iron terminals, and vibrating screens classify lead particles by size.

Stage 3 — Acid Collection & Neutralization Dilute sulfuric acid drained during crushing is collected through a closed pipeline system, then neutralized with lime/soda to pH 6–9 or processed into sodium sulfate — eliminating acid pollution while generating a saleable byproduct.

Stage 4 — Paste Desulfurization (optional, recommended) Lead paste contains sulfur which would generate SO₂ during smelting. In the desulfurization reactor, sodium carbonate converts lead sulfate into lead carbonate, reducing emissions and lowering smelting energy consumption.

Stage 5 — Smelting & Refining Desulfurized paste and lead grids are charged into the rotary smelting furnace with coke/coal and flux. At 1,000–1,200 °C the lead melts and separates from slag; crude lead bullion (95–98%) is tapped. The bullion is then transferred to refining kettles where Cu, Sb, As, Sn and Bi are removed by stirring, dressing and alloying agents, yielding lead of 99.9–99.985% purity, which is cast into ingots automatically.

Stage 6 — Tail-Gas, Dust & Water Treatment All dust and fume sources are connected to the baghouse dust collector (≥99.5% capture) and wet scrubber + activated carbon adsorption for SO₂ and acid mist. Process water is treated in the neutralization tank and recycled in a closed loop. Waste slag is discharged for safe disposal or further metal recovery.

Product Features

Turnkey, one-stop solution — from plant design and equipment supply to installation, commissioning and training; single-supplier accountability.
Lead recovery rate ≥99% — advanced crushing and hydrodynamic separation maximize yield from every battery.
High purity output — refined lead up to 99.985%, PP granules ≥99% purity, meeting battery-grade and resale standards.
Sealed, safe crushing — enclosed crushing circuit prevents electrolyte splash and lead dust leakage; operator exposure minimized.
Full environmental control — baghouse dust collection (≥99.5%), wet scrubber, activated carbon adsorption and acid neutralization included as standard; designed to meet EU Eco-design, US EPA and local emission limits.
Low energy & operating cost — gravity-based separation and energy-efficient furnace design reduce power and fuel consumption; ~25 kWh per ton in the crushing section.
High automation — PLC centralized control, automatic feeding, casting and conveying reduce labor demand by up to 40% compared with manual lines.
Customized capacity — 5–1,000 t/day options with tailored layouts for your site, feedstock and budget.
Flexible configuration — optional paste desulfurization, sodium sulfate crystallization, plastic pelletizing and lead alloying units.
Proven global track record — plants delivered and commissioned in Asia, Africa, the Middle East and Latin America.

Technical Parameters

1. Full Plant Models (Crushing + Smelting + Refining)

Model	Capacity (t/day)	Rated Power (kW)	Recommended Space (m²)
LABR-50	50	~300	2,000
LABR-100	100	~500	3,000
LABR-300	300	~800	6,000
LABR-500	500	~1,000	15,000
LABR-1000	1,000	~1,500	20,000

2. Battery Crushing & Separation Line

Item	Technical Data
Processing capacity	5 t/h · 10 t/h · 15 t/h
Rated power	~220 kW · ~280 kW · ~435 kW
Power consumption	~25 kWh/t
Equipment footprint	30×8×8 m · 42×12×8 m · 45×12×8 m
Lead recovery rate	≥99%
Advised site area	60×15 m · 100×15 m · 100×15 m

3. Lead Smelting Rotary Furnace

Item	Technical Data
Batch capacity	5 / 10 / 20 / 40 / 60 t per furnace
Furnace shell	Boiler steel Q345, thickness 20 mm
Refractory	Magnesia-chrome brick (18#), quantity per capacity
Rotation angle	360°
Rotation speed	0–1 rpm
Smelting time	6–8 h per batch (depends on feedstock)
Fuel	Natural gas ≤300 m³/h (diesel optional)
Crude lead purity	95–98%

4. Lead Refining Kettle

Item	Technical Data
Kettle capacity	25–100 t (custom)
Refined lead purity	99.9% – 99.985%
Impurities removed	Cu, Sb, As, Sn, Bi
Fuel	Natural gas / LPG / diesel

5. Environmental Performance (Typical)

Parameter	Value
Dust collection efficiency	≥99.5% (baghouse)
Acid neutralization pH	6–9 before discharge
Refined lead ingot	Automatic casting, stackable, ~25–50 kg/ingot (custom)
Wastewater	Closed-loop recycling, zero discharge option

Working voltage, layout and parameters are customizable. Data below are typical reference values — contact YuSai Machinery for a solution tailored to your raw materials and capacity.

Advantages

Why choose YuSai Machinery for your lead battery recycling project

Factory-direct manufacturer — Henan YuSai Precision Machinery Co., Ltd. is a manufacturer, not a trading agent. You buy at factory price with full technical support.
One supplier, whole plant — breaking & separation, smelting, refining, plastic recycling and environmental equipment are designed as one integrated system, eliminating interface problems between vendors.
Raw-material-based design — we test your actual battery scrap and design the process and equipment selection around your feedstock, moisture, sulfur content and target purity.
Lower operating cost — gravity separation (no chemicals for separation), energy-efficient rotary furnace and automated conveying cut power, fuel and labor bills.
Compliance-ready — the plant ships with dust collection, gas scrubbing and acid neutralization systems that help you obtain environmental permits (EIA support available).
Fast ROI — at reference market prices a 50 t/day plant can generate ~$4,900/day net profit; higher-capacity plants scale this up with lower unit costs.
Proven service network — engineers available for on-site installation and commissioning worldwide; 24/7 online support.
After-sales protection — 12-month warranty, lifetime spare-parts supply at cost, and continuous technology upgrades from our R&D department.

Quality System

ISO 9001:2015 Quality Management System — design, manufacturing and service processes are audited and documented.
ISO 14001 Environmental Management — our own production follows environmental management standards.
CE-compliant electrical & control systems — electrical components meet international safety standards (customizable to your country’s voltage: 380 V / 415 V / 440 V, 50/60 Hz).
Material quality control — steel plates (e.g., Q345 boiler steel), refractory bricks and electrical components are inspected against incoming-material standards.
Factory testing — every plant is pre-assembled and test-run in our workshop before shipment; key parameters (separation efficiency, motor load, sealing) are recorded and delivered with the machine.
Documentation package — layout drawings, foundation drawings, P&ID, electrical diagrams, operation & maintenance manuals, and installation videos provided with every order.

Service Process

Step 1 — Consultation & raw material test Share your battery types, daily tonnage, local market and target products. We test your scrap sample in our lab/workshop and issue a testing report.

Step 2 — Solution design & quotation Our engineers design the process flow, equipment list, layout and foundation plan, and provide a detailed quotation with financial analysis (CAPEX/OPEX, ROI projection).

Step 3 — Contract & project planning Upon confirmation, we finalize technical drawings, delivery schedule and payment terms.

Step 4 — Manufacturing & quality inspection Production starts in our factory; you are welcome to inspect equipment during manufacturing or at pre-shipment test run. Progress photos/videos are provided regularly.

Step 5 — Delivery & customs support Equipment is packed for sea/air freight with detailed packing lists and shipping documents.

Step 6 — Installation & commissioning Our engineers travel to your site (or provide remote guidance) to install, commission and debug the plant until it runs at rated capacity.

Step 7 — Training & handover We train your operators and maintenance staff on operation, safety and routine care, then hand over the complete documentation.

Warranty & After-Sales Service

12-month warranty from the date of acceptance, covering manufacturing defects and non-consumable parts.
Lifetime technical support — free online consultation and technology upgrading advice from our R&D team.
Spare parts at cost price — all wear parts (hammers, screens, refractory bricks, filter bags, etc.) are available for purchase at factory cost, shipped promptly.
Remote diagnostics — 24/7 online service via WhatsApp / email / video call for troubleshooting and operation guidance.
On-site service — paid on-site support available beyond the warranty period at preferential rates.
Performance commitment — the plant is commissioned to reach the agreed capacity and recovery rate before acceptance is signed.

Precautions

Safety:

Lead and lead fume are hazardous. Operators must wear PPE (respirators with P3 filters, gloves, protective clothing) and follow the operation manual.
Do not open the crusher or separation tanks while running; interlocked safety guards must remain in place.
Smelting and refining areas are high-temperature zones — keep flammable materials away, and ensure furnace operators are trained on hot-metal handling.

Environment:

Connect all dust sources to the baghouse before commissioning; never run the crusher or furnace with the gas treatment system off.
Neutralize acid to pH 6–9 before discharge; keep the ETP records for environmental inspection.
Obtain local hazardous-waste handling and recycling permits before start-up; YuSai can guide your EIA application.

Operation:

Batteries with visible leakage should be drained in the dedicated acid collection area before crushing.
Follow the recommended feed rate; overfeeding damages hammers and screens and reduces separation efficiency.
Perform daily checks on wear parts (hammers, screens, filter bags) and scheduled maintenance per the manual.

Logistics:

Battery scrap is classified as hazardous cargo in many countries — confirm your local transport regulations and manifest requirements for collection logistics.

FAQ (Frequently Asked Questions)

Q1: How much does a lead acid battery recycling plant cost?
A1: Investment depends on capacity, automation level and environmental equipment. As an industry benchmark, the starting price for a small-scale production line with a daily processing capacity of 5–10 tons is approximately $50,000–$300,000; a medium-sized plant with a capacity of 20–50 tons—featuring full automation and comprehensive pollution control systems—typically requires an investment of $500,000–$2 million; and large-scale plants with a daily capacity exceeding 100 tons require an investment of over $2 million. YuSai can provide a detailed quotation and a Return on Investment (ROI) analysis tailored to your specific requirements.

Q2: What is the lead recovery rate?
A2: The crushing and separation line achieves a lead recovery rate of ≥99%. Combined with smelting and refining, the total plant recovers more than 98% of the lead content in the batteries.

Q3: What purity of lead can the plant produce?
A3: Crude lead from the smelting furnace reaches 95–98% purity; after refining, refined lead reaches 99.9–99.985%, suitable for battery manufacturing and other industrial applications.

Q4: Which batteries can be processed?
A4: All types of lead-acid batteries: automotive SLI, truck, forklift, EV/e-rickshaw, e-bike, UPS, telecom, energy storage, gel/AGM/VRLA/flooded, motorcycle and marine batteries — no pre-dismantling required.

Q5: Is the plant environmentally compliant?
A5: Yes. The plant includes baghouse dust collection (≥99.5% efficiency), wet scrubbers, activated carbon adsorption and acid neutralization (pH 6–9), designed to meet EU, US EPA and local emission standards. An optional desulfurization stage prevents SO₂ emissions during smelting.

Q6: What are the final products and who buys them?
A6: Refined lead ingots (sold to battery makers, lead alloy producers, radiation shielding), PP granules (sold to plastic compounders), and sodium sulfate (detergent/glass industries). We can help you connect with off-takers in your region.

Q7: What is the daily profit potential?
A7: Using reference market prices, a 50 t/day plant can yield approximately $4,900/day net profit (lead ingot + plastic revenue minus raw material, energy and labor costs). Actual profit depends on local scrap prices, energy costs and refined lead prices.

Q8: Do you provide installation and training?
A8: Yes — our engineers provide on-site installation, commissioning and operator training worldwide, and the 12-month warranty includes lifetime technical support and remote diagnostics.

Q9: How long does delivery and installation take?
A9: Manufacturing typically takes 45–90 days depending on capacity; on-site installation and commissioning usually take 2–4 weeks. A detailed schedule is provided with your contract.

Q10: Can the plant be customized?
A10: Absolutely. Capacity (5–1,000 t/day), voltage (380/415/440 V), fuel (natural gas, LPG, diesel), automation level, byproduct units (sodium sulfate, pelletizing, alloying) and layout are all tailored to your site and feedstock. Send us your battery sample and requirements for a free solution.

Q11: What environmental permits and regulations apply to a lead acid battery recycling plant?
A11: Recyclers typically need hazardous-waste handling, air-emission and water-discharge permits. Key frameworks include the EU Battery Regulation (65–80% recycling efficiency targets), US EPA regulations for lead smelters and RCRA hazardous waste rules, and the Basel Convention for cross-border transport of spent batteries. YuSai provides layout, EIA documentation support and emission-control designs to help you obtain approval.

Q12: How is the sulfuric acid electrolyte and wastewater handled?
A12: Electrolyte is drained in a closed loop during crushing and neutralized with lime/soda to pH 6–9, or processed into industrial sodium sulfate. Process water is recycled within the plant with a zero-discharge option, and lead-bearing dust captured by the baghouse is returned to the smelting feed — nothing hazardous leaves the system untreated.