EVENT Date October (28) 2023
Description Pluse Air test 2
Goal Sliding gate / pulse air effects
Team Darrell Markewitz (M)
Neil Peterson
Kiernan Rogers
Richard Schwitzer
photos Sarah Scroggie
FURNACE Type standard short shaft
Walls cylinder / clay+sand+horse 7 to 4
Interior 25
Height 62
Stack 45
Base 18
Packing charcoal fines 19
Tuyere standard copper
Diameter 2
Angle -22.5
Proud 5
Air System standard electric blower / sliding gate
Extraction bottom / furnace collapse
MATERIALS Ore DD 1 (red) 51% Fe
Charcoal Oak / Ash
CLOCK ELAPSED EVENT AIR CHARCOAL ORE
UNIT COUNT TOTAL Unit TOTAL
pressure LpM bucket kg kg kg
psi oak = 2.0
ash = 1.7
830 start wood splints pre-heat
905 start sliding gate, minimal air touch
adjust rate to 1 per second
917 open blast slightly 200
922 increase, assumed loss? 600
924 T 56 first rough charcoal to ignite - oak 1 1 2.0
926 fill with rough charcoal 3 4 8.0
944 probe to settle 1 5 10.0
945 tape to seal leak at volume gate
958 T 34 probe to settle, start graded 1 6 12.0
1200 start main sequence
1218 air increase against pulsing amount 800
1219 19 probe to settle 1 7 14.0
1240 column ignited - top touches off
1241 22 1 8 16.0
1303 22 1 9 18.0
1330 27 first slag addition 1 10 20.0 .8 S .8 S
1357 27 1 11 22.0 1 S 1.8 S
1425 28 1 12 24.0 1 S 2.8 S
1450 25 first ore addition 1 13 26.0 1 O 1 O
1512 air via wind gauge (?) 22 kph
1545 55 slag bowl observed too high 1 14 28.0 1 2
1605 20 dropped slag bowl (additional volume) 1 15 30.0 1 3
1631 26 1 16 32.0 1 4
1711 40 air increase 900 1 17 34.0 1 5
1744 33 1 18 36.0 1 6
1814 30 switch to ash charcoal / increase ore 1 19 37.7 1.5 7.5
1847 33 1 20 39.4 1.5 9
1923 36 1 21 41.1 1.5 10.5
1955 32 increase ore 1 22 42.8 2 12.5
2005 poked to settle
2025 30 1 23 44.5 2 14.5
2102 37 1 24 46.2 3 17.5
2132 30 final to cover / start burn down 1 25 47.9
2237 T 65 start extraction
TOTALS
Charcoal 48 kg
Ore 17.5 kg
iron slag added 2.8 kg
Bloom total 3023 gm 3 kg
Gromps
Yield 17 %
Condition fragmented / 2 kg retained
Quality