Dry Milling: Particle Size Reduction and Control for Powder Products
Particle Size Reduction Technology Using Hammer Mills, Particle Size Control Down to 20 µm, ATEX Industrial Safety and Contract Manufacturing Solutions Tailored to Different Formulations and Industrial Applications.
Dry milling is an industrial process used to reduce the size of solid particles without incorporating them into a liquid medium. This technology enables the production of powders with a particle size distribution tailored to the requirements of each product and its intended applications.
Particle size influences mixture homogeneity and material behaviour during subsequent formulation stages.
At AFEPASA Global Solutions, we provide contract dry milling services, from pilot trials to industrial production campaigns, using specialised equipment and adapting the process to the characteristics of each raw material.
Dry Milling Technology and Equipment
At AFEPASA, we operate industrial hammer mills, designed to reduce the size of solid materials through the mechanical action of moving hammers.
Our facilities also include mixing and sieving equipment, allowing materials to be processed according to the specifications of the final product.
Equipment selection and operating conditions depend on factors such as moisture content, thermal sensitivity and material behaviour during processing.
How Does the Dry Milling Process Work?
The process begins with an assessment of the material's properties and the definition of particle size targets.
During milling, the hammers progressively break down the particles. Feed conditions and mill configuration are adjusted to achieve the required fineness.
When necessary, sieving and mixing stages are incorporated to complete product processing.
Process monitoring allows the resulting particle size distribution to be verified and ensures reproducibility between batches.
Particle Size Control: Down to 20 µm
One of the main objectives of this technology is to achieve a controlled particle size distribution.
At AFEPASA, we have the capability to achieve particle sizes down to 20 µm, depending on the properties of the material and the milling conditions.
Preliminary trials allow us to assess process feasibility and establish the parameters required to obtain a particle size distribution suited to each application.
Industrial Safety: ATEX Facilities and Inertisation
Handling certain powdered materials requires specific measures to control the risks associated with the formation of explosive atmospheres.
AFEPASA has ATEX-compliant facilities and nitrogen inertisation systems for processes that require them.
Safety conditions are established according to the characteristics of the material and the risk assessment of each operation.
Applications and Contract Dry Milling Services
Dry milling is used to process raw materials intended for SC and WG formulations, as well as other powder products requiring a specific particle size distribution.
At AFEPASA Global Solutions, we offer a service that integrates pilot trials, industrial milling, mixing and sieving, according to project requirements.
We operate with quality control, batch-to-batch traceability and campaign-based production planning, adapting the process to each customer's technical specifications.
Our contract dry milling services combine industrial technology, particle size control and safety to produce materials suitable for subsequent formulation processes.