Pic 17. A completed pile of clay ready for use.
3.2 Factories in Gemayer, Omdurman
The large factories have a standard way of preparing
the clay. They mix the materials including additives
in a hole with water. They then filter the mixture
through a filter bucket into an adjacent hole. The
factory in picture 18 only has these two holes where
as the factory in pictures 19 – 21 have three holes in
total; two holes for filtered clay (one on either side of
the ingredients mixing hole):
Pic 19. The filter bucket has lots of little holes in the
bottom for drainage.
Pic 20. The mixture is transferred by hand through the
filter to get rid of the impurities into the filtered hole.
Pic 18.The filtered hole on the left (full) and the mixing
hole on the right (empty).
The water that has accumulated in the filtered hole
is then drained back into the empty mixing hole,
leaving behind good quality clay. This drainage is
achieved by opening up a small hole in the dividing
wall between the filtered and mixing holes which is
normally blocked. The clay is then removed and is
ready to use.
Pic 21. The filtered clay hole is then drained of water
which goes back into the mixing hole leaving behind good
quality clay ready for use.
Diagram 1.
Clay Preparation Holes
Clay Preparation Holes
(Factory A) Picture 18
Filtered
Hole
Mixing
Hole
Filter bucket
Clay Preparation Holes (Factory B)
Pictures 19- 21
Filtered
Hole
Mixing
Hole
Filtered
Hole
CLAY BASED
TECHNOLOGIES