A leading plant-based protein manufacturer located in Shandong Province, Linyi City, China, specializes in deep processing of soybeans. Their core products include soybean protein isolate (SPI) and soy protein concentrate (SPC), widely used in meat analogs, nutritional beverages, sports nutrition, and bakery applications.
With the rapid growth of the domestic plant protein market and increasingly customer requirements for product mouthfeel, dispersibility, and solubility, the company faced a common challenge in the industry: how to efficiently and stably produce medium-fineness soybean protein powder with D50 around 20μm while maintaining high protein activity and controlling production costs.
In 2025, the client contacted EPIC Powder through an industry exhibition and online inquiry. After initial contact, our technical team quickly arranged an online + on-site consultation.
Process recommendation
Epic recommended MJW280-L Air Classifier Mill (vertical classifying wheel design, independent drive for grinding disc and classifier)
Advantages for soybean protein:
- Excellent temperature control (material outlet temperature rise <15-18°C)
- Strong shearing + impact composite crushing, suitable for fibrous protein materials
- Frequency conversion precise control of classifying wheel → flexible adjustment of cutting point
- Built-in high-efficiency classifier, almost no oversize particles >45μm
Production line configuration
Feeding system (screw feeder + rotary valve) → MJW280-L → cyclone collector → bag filter → finished product
Optional low-temperature chilled air supply for summer high-output condition
Project Results & Data (after 3 months of continuous production)
Customer Feedback
“After switching to EPIC MJW280-L, the biggest feeling is stability — the product fineness is very consistent every shift, customers no longer complain about coarse particles. At the same time, the output increased by nearly double, and the energy cost per ton dropped significantly. The most important thing is that the low temperature rise really protects the protein activity, and our emulsification and gel properties have improved significantly.”
The MJW280-L Air Classifier Mill has become an ideal solution for soybean protein manufacturers who pursue medium fineness (D50 20μm), high yield, low temperature rise and excellent functional retention. EPIC Powder continues to provide customized ultra-fine grinding solutions for the plant protein industry, helping customers gain competitive advantages in the rapidly developing alternative protein market.
If you are also facing similar challenges in plant protein, pea protein, rice protein or other dietary fiber grinding, welcome to contact us for free sample testing and process recommendation.
Technical Parameters
Material: Soybean Protein
Particle Size: D50: 20μm
Output: 60kg/h
