Green Coffee Bean Processing Line ????? ?? ??????? ???? Technology Introduction：Air Screen Cleaner- Destoner -- Gravity Separator -- Magnetic Machine --Polishing Machine --- Color-Sorting -- Grading Machine -- Packing Machine....

Ethiopia Green Coffee Beans Cleaning Project ?? ???/????? ????



Green Coffee Bean Processing Line ????? ?? ??????? ???? Technology Introduction:
Air Screen Cleaner- Destoner -- Gravity Separator -- Magnetic Machine --Polishing Machine --- Color-Sorting -- Grading Machine -- Packing Machine.
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Air screen cleaner: dust, leaf, light impurity, and then remove large, small impurity and small particles.
Destoner: remove stones.
Gravity separator: blighted seed, budding seed, damaged seed (by insect), rotten seed, deteriorated seed, moldy seed, non-viable seed, seed with black powder sick.
Magnetic machine: clod separate clod from grain.
Polishing machine: remove the dust in all kinds of beans' surfact and polishing the machinerial. 
Color Sortor: Remove different color seeds. 
Grading machine: It is to separate the beans to different size: big, medium and small size.
Packing machine: manual packing machine, save man power.



How Our Green Coffee Bean Processing Line ????? ?? ??????? ???? Works:
For washed coffee beans, no need in dehulling and polishing. If the capacity is large, like 10 tons per hour or even more, we recommend buyers to set up a suitable silo. The first step is cleaning, which usually adopts two machines: vibration separator and destoner. Big and small size impurity will be sorted out from the vibration separator. The stones will be sorted out through the destoner. The working principle is utilizing the gravity difference of the material.
To reach export standard, we need grading (with sieves inside) according to the beans’ size. Usually we classify them into 4 grades. The best beans will come from the middle 2 layers, then will be processed in the gravity separator. This high quality machine will sort out the shriveled or insect bitten kernels. Then, different color beans will be rejected in this color sorter machine. Next, some buyers add the manual checking belt. The last step is weighing and packing.
For dry coffee beans, besides of what listed above, we add dehuller and polishing machine, which will form another complete processing plant.



Coffee Bean Cleaning Line Yield:
Finished product: fine coffee beans
Fine beans proportion: 90-96%
Broken kernel proportion: 2-3%
Impurity content: 2-7%