EVENT Date Oct-19
Description Icelandic stone block 2nd use
Goal slag bowl in place test
Team Darrell Markewitz
James Burton
Neil Peterson
photos Kelly Probyn-Smith
FURNACE Type Norwegian / Icelandic
Material granite block, clay fill
Interior 25
Height 100
Stack 70
Base varies - previous slag bowl retained
Packing wood ash
Tuyere standard copper
Diameter 2
Angle -22.5
Proud 5 ?
Air System standard electric blower
Extraction bottom via arch
MATERIALS Ore DD 2 (red + 18% scale)
Charcoal Maple
CLOCK ELAPSED EVENT AIR CHARCOAL ORE
actual UNIT COUNT TOTAL Unit TOTAL
pressure LpM bucket kg kg kg
psi 1.92
1000 start wood splints pre-heat
1030 30 gentle air, port open / seal arch
1050 20 close port
1131 T 1:30 fill with rough charcoal
1131 main sequence start 800 2 + 2 3.84
1120 start adding graded fuel
1131 11 charcoal is hanging up / rough sides 1 3 5.76
1135 4 dropped with probing 1 4 7.68
1148 13 1 5 9.60
1159 11 1 6 11.52
1215 16 1 7 13.44
1216 air increased 900
1229 14 1 8 15.36
1230 air increased 1000
1242 13 1 9 17.28
1253 11 first ore charge 1 10 19.20 1 1
1307 14 1 11 21.12 1 2
1317 10 1 12 23.04 1 3
1331 14 1 13 24.96 1 4
1345 14 1 14 26.88 1.5 5.5
1356 11 1 15 28.80 1.5 7
1407 11 1 16 30.72 1.5 8.5
1423 16 1 17 32.64 2 10.5
1433 10 1 18 34.56 2 12.5
1445 12 1 19 36.48 2 14.5
1458 13 1 20 38.40 2 16.5
1510 12 1 21 40.32 3 19.5
1525 15 1 22 42.24 3 22.5
1540 15 large self tap 1 23 44.16 3 25.5
1552 12 1 24 46.08 0.714 26.214
1604 12 1 25 48.00
1605 start burn down
1620 air reduced 800
1634 air reduced 600
TOTALS
Charcoal 48 kg
Ore plus 2.8 kg tap slag 26.2 kg
Bloom 6.26 kg
Gromps
Yield 24 %
Condition
Quality spark test estimate  1035