20+ Years · ISO 9001:2015
Battery Material Drying, Calcination and Recycling Equipment
SINOTHERMO builds the drying, calcination, granulation and milling equipment behind battery materials — for precursor, cathode and anode material makers, lithium and sodium salt producers, and black-mass recyclers, plus in-plant waste treatment and R&D pilot lines for cell manufacturers. Inert N₂ protection, iron-free ppb-grade design and ppm-grade residual moisture are built into every dryer we engineer.
- Material testing in our own pilot lab
- Custom-engineered to your process
- Worldwide installation & commissioning
- Response within one business day
Trusted by leading manufacturers
Battery Materials, Salts and Recycling — Not Electrode Coating
Battery Material Makers — Our Core
Precursor (pCAM), cathode (CAM) and anode material plants: co-precipitated hydroxides, iron phosphate, LFP/NCM/NCA powders, graphite, silicon-carbon and hard carbon — from filter-cake dewatering to calcination and final ppm-grade drying.
Recyclers & Salt Producers
Black-mass recyclers and lithium/sodium salt plants: solvent-laden black mass with electrolyte recovery, recovered sulphates and hydroxide intermediates, battery-grade Li₂CO₃ and LiOH·H₂O with CO₂-sealed, iron-free handling.
Cell Makers — Two Specific Scopes
Inside the cell plant we serve two niches: thermal treatment of production solid waste and R&D / pilot-line drying. Electrode coating dryers and dry-room dehumidification are different trades — we will tell you honestly.
From Wet Feed to Battery-Grade Powder
Thermal Sensitivity, Gentle Drying
Low-temperature, controlled drying protects crystal structure, BET surface area and particle morphology through the full precursor-to-cathode process.
Inert-Gas Protection
N₂ atmosphere with O₂ below 500 ppm in closed-loop spray circuits protects high-nickel precursors, carbon-coated LFP and silicon-carbon anode from oxidation.
Iron-Free, ppb-Grade Design
SUS304/316L contact parts, electro-polished surfaces and multi-stage magnetic separation meet battery-grade magnetic-impurity targets.
Ultra-Low Residual Moisture
Vacuum and low-temperature drying reach the ppm-grade residual moisture that cathode and anode powders require.
Spray Drying and Granulation Equipment
Closed-Loop Inert Spray Drying
A sealed N₂ loop spray-dries precursor slurries and solutions into uniform spherical powder while protecting oxidation-prone feeds.
LFP Spray Granulation
Centrifugal spray granulation converts LFP slurry into spheroidised, free-flowing granules ready for calcination.
Solvent Recovery
Staged vacuum control from 0.2 to 500 mbar recovers process solvents selectively as the material dries.
Lab-to-Line Scale-Up
The LPG-5 laboratory spray dryer runs the same equipment envelope as our production-scale units, so pilot results transfer directly to your line.
Black Mass and Battery Recycling
Inert Vacuum Drying
Black mass carrying residual electrolyte and water is dried under inert N₂ with indirect heating and staged vacuum.
Selective Solvent Recovery
Adjustable vacuum from 0.2 to 500 mbar condenses and recovers each solvent selectively as the powder dries.
Explosion Safety Engineering
Explosion venting and suppression designed to EN 14491 and EN 14373, with anti-static grounding and negative-pressure dust containment for combustible carbon fines.
Recovered Material Ready for Re-Use
Dried black mass and recovered salts leave the process as qualified powder ready to re-enter the battery-material supply chain.
Sodium-Ion Cathode and Hard Carbon Carbonization
Same Platform as Lithium
The same equipment family that dries lithium-battery materials covers sodium-ion streams — layered oxides, polyanion cathodes, Prussian-blue analogs and hard carbon.
Hard Carbon Carbonization
Indirect-heating rotary kilns carbonize hard-carbon anode material at 1000–1400°C under N₂/Ar with O₂ below 10 ppm, keeping combustion gas off the powder.
Prussian-Blue and NaPF₆ Handling
Prussian-blue analogs stay below a hard 180°C product-temperature limit with HCN monitoring; NaPF₆ electrolyte salt dries to a KF target at or below 50 ppm with HF off-gas scrubbing.
Polyanion Spray Granulation
The same spray-granulation platform that runs LFP also spheroidises polyanionic sodium cathode materials — NVP, NVPF, NFPP and NFS.
In-Plant Production Waste Treatment
Electrically Heated Rotary Kiln
An indirect rotary kiln with electric resistance heating burns out binders and electrolyte residues from scrap electrodes and waste powder at 300–800°C under N₂ or vacuum.
No Combustion Flue Gas
Electric heating keeps burner exhaust away from the material, so no CO₂, H₂O or SO₂ contaminates battery-grade streams during binder burnout.
Zoned Temperature Control
Independently controlled electric heating zones hold the pyrolysis curve to within ±5°C of setpoint across the 300–800°C range.
Clean Off-Gas Train
HF and POF₃ go to an alkaline scrubber with on-line F- monitoring, CO to after-burning, and solvents to condensation recovery.
Material × Equipment Quick Reference
NCM / NCA Precursor (pCAM)
Dried before calcination at 150–180°C under N₂.
Spray Dryer · Vacuum Paddle / Rake Dryer · Spin Flash Dryer
NCM / NCA Cathode (CAM)
ppm-grade drying at 150–180°C, with calcination at 700–1000°C under N₂.
Vertical Disc Dryer · Rotary Kiln
Iron Phosphate FePO₄·2H₂O
Crystal-water removal at 200–300°C in air or N₂.
Spin Flash Dryer · Vacuum Rake Dryer · Disc Dryer · Rotary Kiln
LFP Finished LiFePO₄/C
Spheroidised granules — spray outlet around 125°C, then calcination under N₂/Ar.
Spray Granulation (LPG / YPG / GXP) · Rotary Kiln
Graphite / Si-C Anode
Below 50 ppm residual moisture at 110–130°C under N₂, explosion-proof design.
Fluid Bed Dryer + Vacuum Disc Dryer · Belt Dryer · Rotary Kiln
Black Mass (Recycling)
Low residual moisture with solvent recovery, up to 200°C under vacuum (to 650°C where required), N₂ inerted.
Vacuum Paddle / Rake Dryer · Double Cone Rotary Vacuum Dryer · Rotary Kiln
Cell-Plant Production Waste
Binder burnout and pyrolysis at 300–800°C under N₂ or vacuum, low-oxygen atmosphere.
Electrically Heated Indirect Rotary Kiln
Waste-Powder Re-Granulation
Re-agglomeration to D50 200–500 μm at ambient temperature in air.
Oscillating Granulator · Roller Compactor
Li₂CO₃ / LiOH·H₂O Salts
Battery-grade magnetic-impurity control — LiOH at 80–95°C, anhydrous grades at 300–450°C under N₂ with CO₂ sealing.
Sealed Disc / Plate Dryer · Rake and Paddle Dryer · Fluid Bed Dryer
Validate Your Material Before You Commit
Send Us Your Material
Ship a representative sample of your slurry, filter cake or powder. We run it on pilot-scale equipment from the same families we build at production scale.
Trial on Real Equipment
Trials run under the atmosphere your process needs — N₂ inerted, vacuum-staged or air — so the conditions match what your line will actually see.
Measured, Not Estimated
Particle size distribution is measured on our own laser diffraction analyser; residual moisture, bulk density and morphology are recorded against each parameter set.
A Report You Can Design From
You receive the confirmed process parameters, the recommended equipment and model, and the measured product data — the basis for a firm technical proposal instead of an estimate.
Pilot Results Transfer Directly
Because the pilot unit shares the equipment envelope of the production machine, the parameters you validate scale up without re-developing the process.
Proven on Real Battery Materials
A sample of delivered battery-material applications. Client names are withheld under confidentiality — full references are available in a direct conversation, subject to each client's consent.
LFP Cathode Powder — Korea
Pilot-scale LFP-related spray drying (LPG-5, 2025), with on-site commissioning and operator training.
Spray Dryer
Sodium-Ion Cathode Material
SZG-5000 double-cone rotary vacuum drying — low-temperature, oxygen-free, gentle batch handling.
Double Cone Rotary Vacuum Dryer
Solid-State Electrolyte Powders
LPG-5 spray drying for solid-state battery key materials on an R&D pilot line.
Spray Dryer
Cell-Plant Production Waste
Thermal treatment of scrap electrodes and waste electrode powder — controlled atmosphere, no flue gas.
Electrically Heated Rotary Kiln
Battery-Grade Li₂CO₃ (> 99.5%)
Continuous vertical plate drying — contamination-free, with stable residual moisture.
Vertical Plate Dryer
NCM Cathode, Precursor & LFP/LMFP
Ternary cathode and precursor drying, nickel/manganese/cobalt sulphates, iron phosphate and LFP/LMFP powders.
Spray Dryer · Vacuum Dryer
CNT Conductive Agent & Graphene
Low-solids nano-slurry spray drying with powder morphology and dispersibility control.
Spray Dryer
Supercapacitor Electrode Waste
Dry granulation of waste electrode powder — re-agglomeration without re-dissolving the material.
Dry Granulator
Our Company
Quality Management System
Global Compliance, Certified Excellence: All SINOTHERMO equipment complies with ISO9001:2015 standards, ensuring end-to-end quality control from R&D to final testing. Traceable processes and continuous optimization guarantee efficiency, durability, and compliance with EU/NA/Asian industrial regulations.
Advanced Production Facilities
Efficient Production Processes: We utilize optimized production processes and layouts to enhance production efficiency and ensure product quality.
Strict Quality Control: Every product undergoes rigorous quality inspections before leaving the factory to meet high standards.
Excellent Technology
Expert R&D Team: Comprising top industry experts, our R&D team continuously innovates and optimizes our products.
Patents and Certifications: Numerous technological achievements have received national patents and international certifications, highlighting our technical leadership.
Comprehensive Service Solutions
Highly Customizable Pre-sales Support: Our pre-sales team is dedicated to understanding your unique requirements and providing highly customizable solutions.
On-site Installation and Commissioning: Our skilled technical team provides on-site installation and commissioning services worldwide.
Comprehensive After-sales: Our after-sales service system is efficient, ensuring timely responses to customer needs and issues.
Facility Showcase
Our Changzhou manufacturing base and in-house testing laboratory — where we run your material before you commit to a machine.
Schedule a Meeting with Us
Discover Our Extensive Product Lines
Looking for the ideal industrial drying solution? Schedule a meeting now and let our experts show you our extensive range of drying equipment tailored for food, pharmaceutical, chemical, and petroleum industries.
Explore Our Custom-Made Solutions
Every project is unique. Our team specializes in creating custom solutions to meet your specific requirements. Book a meeting to discuss your project needs and discover how we can provide the perfect fit.
Benefit from Pre-sales Consulting
Not sure which equipment suits your needs? Take advantage of our comprehensive pre-sales consulting services. Arrange a meeting today to ensure you choose the best solution for your operations.
Experience Our Expertise and Support
From initial consultation to final on-site installation, our team is here to support you every step of the way. Schedule a meeting now to learn more about how we can assist you throughout your entire project lifecycle.
Get Solution
Send us your material and throughput requirements — we'll come back with a sized configuration and budget.