A study case on coffee (Coffea arabica): Limu Coffe - IRD

Then coffee for export gets commonly reprocessed in the Bülher machine in the same
warehouse that exporters rent to the Coffee Processing and Warehouse Enterprise. Some
exporters own the required processing plants. Then export coffee is stocked in the ECX export
coffee or exporter warehouse. Then, export coffee goes to the second test CLU, the export
CLU.
Illustration 41: From Bülher machine to export warehouse (Bossolasco, 24 th September 2009)
Coffee stocked in arrival warehouse is then divided in three piles, which correspond to
the three processing lines: two for unwashed coffee and one for washed coffee. A single line
of Bülher machine processes coffee as steps follow: 1) hoper 2) elevator 3) pre-cleaner (to
separate overscreen and underscreen coffee) 4) magnetic separator (to separate metal
parasites) 5) distoner (to separate stones) 6) elevator 7) huller (to separate parchment) 8)
polisher (to smooth the bean) 9) grader (to separate elephant size, peaberry, C-grade and
under screen 13 coffee) 10) C-grade separator 11) Catadors for C-grade and normal beans (to
separate light coffee) 12) elevator 13) colour separator (to separate hand picked coffee) 14)
three silos for normal coffee and one silo for C-grade coffee (capacity: three exporters, but if
they own more than one container, they will pass turn by turn) 15) sorting belts (women
sorting remained defects) 16) final silo 17) export warehouse: balance (weight according to
importing countries: 50 kg for washed coffee addressed to Saudi Arabia and 60 kg to USA).
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