Over 10,000+ customers' choice, Focus on screening industry 40+ years
The agglomeration of protein powder fines results from multiple contributing factors:
Electrostatic attraction is the primary culprit. Protein powder particles are extremely fine. During screening, friction between particles generates static electricity. Charged fine particles attract each other, forming agglomerates, while simultaneously adhering to the screen surface and gradually blocking the mesh.
Low bulk density makes natural settling difficult. Protein powder is lightweight – on conventional vibrating screens, it struggles to pass through high‑mesh screens by gravity alone. Material floats and tumbles on the screen surface but fails to pass through in a timely manner.
High fineness leads to rapid blinding. Whey protein powder particles can be as fine as 43 microns. Soy protein powder typically requires 80‑200 mesh screening. Once fines agglomerate, the mesh becomes blocked quickly, and screening efficiency drops sharply within a short period.
Conventional vibrating screens "vibrate and blind more." The high‑frequency vibration of conventional screens actually intensifies particle friction and static generation, creating a vicious cycle of "more vibration, more blinding."
The working principle of Gaofu's QLSP series centrifugal sifter is fundamentally different from that of conventional vibrating screens.
Conventional vibrating screens rely on gravity settling and mechanical vibration to make material "bounce" through the screen. The centrifugal sifter works completely differently: material is mixed and atomised with airflow after passing through a screw conveying system, then enters a cylindrical screen drum. Inside the drum, rotor blades subject the material to both centrifugal force and propelling force, forcing it to pass through the screen.
Fine particles that pass through are discharged from the fines outlet, while oversize material travels along the screen wall and is discharged from the oversize outlet.
The key difference is: protein powder no longer "squeezes" through the screen as agglomerates – it is thoroughly dispersed in the airflow and passes through as individual particles "floating" through the mesh.
This technical approach fundamentally solves the agglomeration problem of protein powder fines – the lightweight, easily floating nature of the powder is fully utilised. Material is thoroughly dispersed in the airflow, breaking down agglomerates, so that individual particles pass through the screen sequentially with the airflow.
Addressing the three major causes of protein powder fine agglomeration, Gaofu's QLSP series centrifugal sifter provides corresponding solutions:
1. Airflow dispersion – preventing agglomeration at the source
Upon entering the sifter, protein powder is first thoroughly mixed and atomised with high‑speed airflow. Under the strong impact of the airflow, existing agglomerates are rapidly broken apart, and individual particles become suspended in the airflow. Material is thoroughly dispersed in the airflow, with no agglomeration. This process is completed before the material even contacts the screen – fundamentally preventing agglomerates from entering the screening zone.
2. Centrifugal force + propelling force – forced passage through the screen
Dispersed individual particles enter the screen drum with the airflow. Under the dual action of centrifugal force and propelling force generated by the rotor blades, particles are "propelled" toward the screen. Protein powder particles no longer "wait" to pass through – they are "actively" driven through the mesh. Fine particles that pass through are discharged from the fines outlet.
3. Continuous airflow scouring – automatic screen cleaning
On conventional vibrating screens, fine protein powder tends to accumulate statically on the screen surface, gradually blocking the mesh. The centrifugal sifter is different – the screen is continuously scoured by the rotating airflow, achieving automatic self‑cleaning. Material remains suspended in the airflow and cannot accumulate on the screen surface. Fine particles cannot adhere to the screen – blinding is fundamentally eliminated.
4. De‑agglomeration function – breaking soft lumps
Protein powder may form soft lumps during storage or conveying. The QLSP series is equipped with a de‑agglomeration function that breaks up soft lumps. Lumps are dispersed into individual particles before entering the screening zone, preventing screening efficiency loss caused by agglomerates.
Gaofu's QLSP series centrifugal sifter is specifically designed for 80‑635 mesh ultra‑fine powders, developed for ultra‑light, sticky, electrostatic, and easily agglomerated materials.
In high‑fineness protein powder screening, this series offers the following technical features:
High screening efficiency. Screening efficiency reaches over 95% , with throughput 5‑10 times that of conventional vibrating screens. For protein powder processors, this means significantly more合格 finished product in the same amount of time – the screening stage no longer bottlenecks the entire production line.
Wide screening fineness coverage. Screen mesh covers 80‑635 mesh. Whether for conventional soy protein screening (80‑200 mesh) or ultra‑fine whey protein screening (above 200 mesh), suitable configurations are available.
Fully enclosed negative‑pressure structure prevents dust emission. The equipment features a fully enclosed structure with excellent sealing performance – no dust escapes during operation. Fine powder is classified within a closed chamber, protecting the workshop environment and improving material recovery. For high‑value materials like protein powder, dust control is not just about the workshop environment – it directly affects material loss and economic efficiency.
Compatible with positive/negative pressure pneumatic systems – suitable for integrated production lines. The QLSP series can be connected in series with positive‑ or negative‑pressure pneumatic systems and can withstand 0.1 MPa of operating pressure. For protein powder processors with existing pneumatic conveying lines, seamless integration is achievable. The equipment can operate as a single unit or in multiple units, supporting long‑duration continuous operation.
Easy cleaning – suitable for multi‑product changeovers. Protein powder processors typically handle multiple product varieties and formulations. The QLSP series is easy to clean and suitable for small‑batch, multi‑product screening – effectively preventing cross‑contamination from material mixing.
Gaofu's QLSP series centrifugal sifter is used in the following protein powder processing applications:
Fine screening of soy protein isolate : removing lumps and agglomerates from fine powder, ensuring uniform finished product fineness
Ultra‑fine classification of whey protein powder : precise classification of 43‑micron ultra‑fine powder, removing sediment particles
Impurity removal screening of pea protein : removing fibre impurities and agglomerated particles from raw materials
Multi‑product changeover production : suitable for protein powder processors with diverse product lines and small‑batch requirements – easy to clean, preventing cross‑contamination
Food Industry Client Testimonials
Nestlé, CP Group, Haitian Flavour & Fragrance, Yihai Kerry, Yili, Mengniu,Shuanghui, Wahaha, Master Kong, Want Want, Anjoy Foods, Angel Yeast,Yangyuan Foods, Uni-President Enterprises, Qiaqia Food, Luhua Group,Alpenliebe, Golden Monkey, Orion, Xizhilang,Sanquan Foods, Synear Food, Oishi, Wong Lo Kat, Yanjing Beer, Seamild,Jinpai, Chubang, Hengshun Vinegar Industry, Longda Group, Beijing Daoxiangcun, Anhe Dairy,Weiwei Group, Xiangpiaopiao, Maiquer, Tianbing, Binqi Food, Ligao Okun
Fortune 500 Client Testimonials
CNPC、CSCEC、Sinochem Holdings、CRCC、China Minmetals Corporation、CNOOC、CR、Sinopharm、CHN Energy、COFCO Corporation、Huawei Technologies、PowerChina、CITIC Group、Wuchan Zhongda Group、NORINCO、Chalco、CNBM、 Shaanxi Coal and Chemical Industry Group、Ansteel Group、CETC、CSSC、CASC、CEC、Jinchuan Group、CASIC、Conch Cement、CNNC、SPH、Shanxi Coking Coal Group、 Zhongtai Chemical、GPHL、DEC、Sinosteel Corporation、MCC、China National Salt Industry Chemical、China Baowu Steel Group、China Animal Husbandry Industry Co., Ltd.、CECEP
About Gaofu
Xinxiang Gaofu Machinery Co., Ltd. was founded back in the 1980s. With over 40 years of development, it has been certified as a National-level Specialized, Refined, Unique & Innovative Little Giant Enterprise, National Green Factory, National High-tech Enterprise, and National Intellectual Property Advantage Enterprise, and serves as the President Unit of China Vibration Screening Industry Association.
The company is accredited with the Henan Provincial Industrial Design Center, Henan Provincial Engineering Technology Research Center for Intelligent On-line Screening System, and Xinxiang Municipal Engineering Technology Research Center for Fine Screening.
Gaofu has obtained more than 500 patents including invention patents, utility model patents and design patents, been awarded the Science and Technology Achievement Prize issued by the Ministry of Industry and Information Technology of China, and participated in drafting and formulating 4 national standards.
Gaofu's product portfolio covers multiple series and hundreds of specifications, including vibrating screening equipment, conveying equipment, coal crushing equipment, filtration equipment and automatic material handling systems.
Core products include vibrating screens, screening machines, vibratory sifters, rotary vibrating screens, ultrasonic vibrating screens, linear vibrating screens, airflow screens, gyratory screens, roller screens, dewatering screens, bar screens, vacuum feeding machines, dust-free feeding stations, bulk bag feeding stations, feeding systems, automatic powder feeding systems, automatic slag-discharging filters, leaf filters, clay filters, toothed roll crushers, coal crushers and other machinery.
These products are widely applied in food, pharmaceutical, chemical, metallurgy, construction materials, mining, thermal power, environmental protection and many other industries, winning recognition and trust from over 10,000 clients worldwide.
Gaofu products enjoy strong sales across Greater China, and are exported to more than 100 countries and regions such as Russia, Canada, the United States, New Zealand, Japan, Brazil and South Africa.
Upholding the corporate mission of Improving material quality & efficiency to fully satisfy customer demands, Gaofu maintains long-term partnerships with clients to achieve win-win development.
At present, Gaofu is an official qualified supplier for numerous Fortune Global 500 enterprises, including CNPC, Sinopec, Sinochem Holdings, China Resources Group, Sinopharm Group, COFCO, China National Building Material, China Aerospace Science and Technology Corporation, Jinchuan Group and more.
Gaofu Machinery ranks No.1 in global sales volume of vibrating screens.
In May 2024, Frost & Sullivan, a world-renowned international consulting firm, issued a Market Position Verification Certificate confirming that Gaofu achieved the world's largest shipment volume of vibrating screens in the global market in 2023.
