EVENT Date Oct-19
Description Icelandic stone block 3rd use
Goal slag bowl in place test
Team Darrell Markewitz
Rey Cogswell
Neil Peterson
2x from OABA
safety Kelly Probyn-Smith
FURNACE Type Norwegian / Icelandic
Material granite block, clay fill
Interior 25
Height 100
Stack 70
Base 15
Packing charcoal fines 15
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 1.8
1000 start wood splints pre-heat
1020 20 gentle air
1040 20 seal tap arch
1120 increase air 400
1145 T 1:45 add rough charcoal 800
relative
1200 main sequence start 3 3 5.40
1204 4 adding rough charcoal 1 4 7.20
1211 7 1 5 9.00
1220 9 1 6 10.80
1233 13 last ungraded fuel 1 7 12.60
1238 air increased 1000
1248 15 graded fuel 1 8 14.40
1300 12 1 9 16.20
1313 13 1 10 18.00
1326 13 1 11 19.80
1339 13 first ore charge 1 12 21.60 1 1
1353 14 1 13 23.40 1 2
1406 13 1 14 25.20 1 3
1419 13 1 15 27.00 1 4
1434 15 1 16 28.80 1 5
1446 12 1 17 30.60 1 6
1500 14 1 18 32.40 1.5 7.5
1512 12 1 19 34.20 1.5 9
1528 16 1 20 36.00 1.5 10.5
1541 13 1 21 37.80 2 12.5
1557 16 1 22 39.60 2 14.5
1609 12 1 23 41.40 2 16.5
1622 13 1 24 43.20 3 19.5
1638 16 1 25 45.00 3 22.5
1654 16 last ore charge 1 26 46.80 3.5 26
1703 9 last charcoal to cover 1 27 48.60
start burn down
1725 air reduced 800
TOTALS
Charcoal 49 kg
Ore plus 2.8 kg tap slag 26.0 kg
Bloom 6.75 kg
Gromps
Yield 26 %
Condition lacy and crumbly
Quality spark test estimate  1045