Milling and dry classification processes for batteries.

Electric vehicles, smartphones, computers, consumer electronics… The battery market is becoming a new arena of international competition. The major battery manufacturers are now trying to improve the performance of batteries with a longer life span, reduce their carbon footprint while reducing their costs.

The POITTEMILL Group offers a wide range of patented industrial processes for fine grinding, particle size reduction, separation and classification of active materials to provide the most suitable engineering solutions for full operational compliance in the production of solid-state batteries, Lithium Iron Phosphate batteries and Lithium Ion batteries.


Typical cathode material compounds
for lithium-ion batteries:

• LCO (lithium cobalt oxide, LiCoO2)
• NCA (lithium nickel cobalt aluminium oxide, LiNiCoAlO2)
• NMC (lithium nickel manganese cobalt oxide, Li[NiCoMn] O2)
• LMO (lithium manganate, LiMn2O4)
• LFP (lithium iron phosphate, LiFePO4)
• Lithium carbonate (Li2CO3)
• Lithium hydroxide (LiOH)


Sustainable processing solutions

Fully integrated solutions are the key to providing optimised processes that help you both reduce costs and make more sustainable use of valuable resources.

These systems are based on the principle of:
• Reliability and safety
• Low operating and maintenance costs
• Guaranteed hygienic, customer-oriented process solutions
• Easy cleaning
• Energy saving

The diverse characteristics of powders in these types of industries require a combination of engineering skills and experience to design quality systems to meet the expectations of today’s and tomorrow’s customers.


Process testing and development

The POITTEMILL Group has its own scientific laboratory as well as a test center which is unique in France. It is in this test center that the dialogue between customers and the technical teams begins, but it is also here that detailed analyses of their raw materials are carried out to obtain complete information on the execution of the task set.

Our development and engineering team is always available to help you explore new and innovative processes and applications.

Our testing facilities offer exceptional opportunities to test ingredients, machines, parameters, and processes, whether in the laboratory, pilot or industrial scale, to ensure you achieve the necessary product quality and operating efficiency.


Type of tests

Classification - grinding

Test including drying

Test including inerting

Cryogenic test

Test including FORPLEX grinding equipment

Crushing and Screening Test


Particle size analysis

Hardgrove grindability index (HGI)

Laser particle size measurement - dry grinding / Lab Sieve

Moisture measurement

NIR analysis


Do you have a project in mind? Need information?

At the forefront of innovation, the POITTEMILL Group has been designing its own equipment for over 90 years, offering customized turnkey solutions.


Sustainable processing systems

In the context of the climate emergency, the environment is the strategic priority of the POITTEMILL Group. The Group approaches it with the ambition to offer processing technologies that maximise production efficiency while minimising your carbon footprint. In addition, our POITTEMILL Group dry powder processing technologies are developed to support and integrate a more sustainable life cycle.