Background: A large domestic food processing company in China required precise screening of corn starch to remove foreign matter and agglomerates, ensuring compliance with food-grade standards.
Challenges: Corn starch is prone to moisture absorption and clumping; traditional screens frequently clogged, and manual cleaning was inefficient.
Solutions:
Deployed a 304 stainless steel vibrating screen with dual-layer 80-mesh (coarse) and 100-mesh (fine) screens for simultaneous two-stage screening.
Sealed design with dust extraction ports to minimize airborne contamination.
Adjustable vibration amplitude to prevent starch particle damage.
Results:
Screening efficiency increased by 300%, achieving a throughput of 2 tons/hour.
Uniform starch fineness (≥98% pass rate), with clump rate reduced to <0.3%.
Successfully passed ISO 22000 food safety certification audit.
Background: A starch processing plant in Southeast Asia required continuous screening of high-moisture cassava starch.
Challenges: Cassava starch's high viscosity caused particle adhesion to screen mesh, reducing output.
Solutions:
Implemented an airflow sifter using negative pressure airflow to disperse sticky particles.
Integrated automatic screen-cleaning system (bouncing balls + ultrasonic) to prevent mesh blockage.
Linked with drying systems to maintain humidity below 12%.
Results:
Achieved 8-hour continuous operation without clogging, boosting productivity by 40%.
Final starch met moisture (≤14%) and impurity (≤0.1%) specifications.
Enabled full automation of the production line.
Background: A European pharmaceutical manufacturer required ultra-pure potato starch for capsule formulations.
Challenges: Traditional screening failed to remove trace metal shavings and fibrous impurities.
Solutions:
Adopted an ultrasonic vibrating screen with high-frequency micro-vibration to break starch agglomerates and remove impurities >20μm.
Selected 500-mesh screen (≈25μm) and added magnetic separator for metal removal.
Fully enclosed aseptic design compliant with GMP standards.
Results:
99.9% impurity removal rate, meeting pharmacopoeia requirements.
Improved starch flowability enabled direct use in tablet pressing, reducing costs by 15%.
Background: A chemical company producing carboxymethyl starch (CMS) required particle size classification for diverse applications.
Challenges: Modified starch had broad particle distribution, necessitating multiple screening stages.
Solutions:
Customized centrifugal sifter with adjustable centrifugal force and airflow for single-pass grading (80/120/200 mesh).
Constructed with corrosion-resistant 316L stainless steel for acid/alkali resistance.
PLC-controlled system for real-time monitoring.
Results:
Simultaneous production of three product grades replaced multi-stage processes.
Particle size distribution deviation narrowed from ±15% to ±5%, increasing product value by 20%.
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