| EVENT | Date | October (29) 2022 | |||||||||
| Description | Lower & Longer - Repeat | ||||||||||
| Goal | second use of air at bellows volume | ||||||||||
| Team | Darrell Markewitz (M) | ||||||||||
| Neil Peterson | |||||||||||
| Ryan Kuntze | |||||||||||
| Ethan Khan Hafner | |||||||||||
| Max Hafner | |||||||||||
| FURNACE | Type | short shaft on plinth | |||||||||
| Material | standard | ||||||||||
| Walls | cylinder / clay+sand+horse | 4 to 7 | |||||||||
| Interior | 25 | ||||||||||
| Height | 60 | ||||||||||
| Stack | 40 | ||||||||||
| Base | 20 | ||||||||||
| Packing | charcoal fines | 18 | |||||||||
| Tuyere | standard copper | ||||||||||
| Diameter | 2 | ||||||||||
| Angle | -22.5 | ||||||||||
| Proud | 6 | ||||||||||
| Air System | standard electric blower | ||||||||||
| Extraction | bottom via arch (furnace broken) | ||||||||||
| MATERIALS | Ore | DD 1 (red) | 51% Fe | ||||||||
| Charcoal | Oak | ||||||||||
| CLOCK | ELAPSED | EVENT | AIR | CHARCOAL | ORE | ||||||
| UNIT | COUNT | TOTAL | Unit | TOTAL | |||||||
| pressure | LpM | vane | probe | bucket | kg (E) | kg | kg | ||||
| inch water | plate | x172 | x79 | 1.8 | |||||||
| 900 | start wood splints pre-heat | touch | |||||||||
| 1025 | T 1:25 | fill with rough charcoal | touch | 500 | 3 | 3 | 5.40 | ||||
| 1101 | interupted to set meters | ||||||||||
| 1113 | 48 | switch to graded | 1 | 4 | 7.20 | ||||||
| 1113 | 9 | ||||||||||
| 1122 | meter reading | 3.8 / 654 | |||||||||
| 1144 | 31 | 1 | 5 | 9.00 | |||||||
| 1148 | meter reading | 3.9 / 671 | |||||||||
| 1213 | 29 | 1 | 1 | 6 | 10.80 | ||||||
| 1222 | poked to settle (1/2 bucket) | ||||||||||
| 1231 | 18 | taped various gaps at meters | 1 | 7 | 12.60 | ||||||
| 1238 | first ore addition (Lexington) | ||||||||||
| 1301 | meter reading | 4.0 / 688 | 6.15 / 486 | 1 | 8 | 14.40 | 1 L | 1 L | |||
| 1326 | 25 | 1 | 9 | 16.20 | 1 L | 2 L | |||||
| 1350 | 24 | switch to analog | 1 | 10 | 18.00 | 1 O | 1 O | ||||
| 1410 | 20 | 1 | 11 | 19.80 | 1 | 2 | |||||
| 1430 | poked to settle | ||||||||||
| 1444 | 34 | 1 | 12 | 21.60 | 1 | 3 | |||||
| 1514 | 30 | 1 | 13 | 23.40 | 1.5 | 4.5 | |||||
| 1545 | 31 | 1 | 14 | 25.20 | 1.5 | 6 | |||||
| 1606 | 21 | poked to settle | 1 | 15 | 27.00 | 1.5 | 7.5 | ||||
| 1649 | meter reading | 5.1 / 403 | |||||||||
| 1653 | 47 | 1 | 16 | 28.80 | 2 | 9.5 | |||||
| 1730 | 37 | 1 | 17 | 30.60 | 2 | 11.5 | |||||
| 1800 | 30 | 1 | 18 | 32.40 | 2 | 13.5 | |||||
| 1810 | self tap | ||||||||||
| 1823 | meter reading | 4.16 / 791 | 5.25 / 415 | ||||||||
| 1833 | 33 | 1 | 19 | 34.20 | 3 | 16.5 | |||||
| 1908 | 35 | 1 | 20 | 36.00 | 3 | 19.5 | |||||
| 1952 | 44 | time estimated | 1 | 29 | 52.20 | 3 | 22.5 | ||||
| 2021 | 29 | balance of ore | 1 | 30 | 54.00 | 2 | 24.5 | ||||
| charcoal to cover | 1 | 31 | 55.80 | ||||||||
| start burn down | |||||||||||
| TOTALS | |||||||||||
| Charcoal | 56 | kg | |||||||||
| Ore | 24.5 | kg | |||||||||
| Lexington as seed | 2 | kg | |||||||||
| available iron (Fe x wt) | 12.5 | kg | |||||||||
| charcoal burn rate (average) | 18.1 | M/kg | |||||||||
| ore addition rate (average) | 16.0 | M/kg | |||||||||
| Bloom | 5 | kg | |||||||||
| Gromps | |||||||||||
| Yield | 20 | % | |||||||||
| yield from available iron | 40 | % | |||||||||
| Condition | very crumbly | ||||||||||
| Quality | sparks as about 1010 |