Cocoa powder

• 01

  Cocoa Bean Husk Separation (A West African Cocoa Processing Plant)

  Background: A cocoa processor required efficient separation of fragmented husks and impurities from roasted cocoa beans to improve chocolate production quality.

  Challenges:
  Traditional manual sieving caused uneven particle size distribution (15%-20% husk residue);
  Static electricity from dry cocoa powder led to screen clogging and material loss.

  Solution:
  Deployed a tumbler vibrating screen with anti-static coating (food-grade stainless steel);
  Customized 3-layer sieve configuration:
  Top layer: 8-mesh (2.36mm) for large husks;
  Middle layer: 30-mesh (0.6mm) for fine cocoa powder separation;
  Bottom layer: Ultra-fine dust collection.
  Integrated airflow assist system to neutralize static charges.

  Results:
  Husk removal efficiency reached 98.5%;
  Cocoa powder yield increased by 22% (from 75% to 97%);
  Processing capacity stabilized at 2 tons/hour with zero cross-contamination.