Iron foundry basics
Practical Action
D. Ash pit
E. Refractory
F. Chimney
G. Tongs
H. Sliding cover
I. Fuel
Fig. 4.
Part of construction
Made from local clay, which would be cheaper to obtain
and be
immediately available for any repair required.
Constructed of local clay or used kerosene drums, the
bottom
sections to be lined with clay.
Can be purchased along with salamander pot, or made
by local blacksmith.
Local refractory stone
Charcoal obtained locally is recommended. Other fuels
such as coal, coke, oil, etc., can be used.
Figure 2: Crucible Furnace (Forced air)
Additional equipment required for forced-air system
Blower or Fan
Handwheel or Motor
Damper
Purchased (possibly locally) together with suitable drive belts.
Probably obtainable locally, handle to be added. To drive blower,
Instead of operating manually with handwheel. Pulleys for motor and
blower shafts required, together with suitable drive belts (V belts)
Obtained and made locally.
If an increased melting capacity is required, a cupolette can be used (Figures 5, 6 and 7).
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