How to Remove Defective Coffee Beans in Industrial Processing

Introduction

In most coffee processing plants, defective beans are still a major issue that affects final quality and export pricing. Even after washing and drying, defects such as black beans, insect-damaged beans, or broken beans remain in the batch.

These defects cannot be fully removed by manual sorting.

Common Defects in Coffee Beans

· Black beans

· Immature beans

· Shells and husks

· Insect-damaged beans

· Broken beans

Limitations of Manual Sorting

Manual sorting depends heavily on labor experience. In large-scale production, it leads to:

· Inconsistent quality

· High labor cost

· Low efficiency

· Fatigue-related errors

Industrial Solution

Modern coffee factories use optical sorting systems that detect each bean individually using cameras and eject defective beans using air jets.

Result

· Stable output quality

· Higher export grade

· Reduced labor cost

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