IRON SMELT Experiment Overview

2012 Iron Smelt Experiments

v1 - 2021

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CONSUMPTION / SEQUENCE rates (at m/kg) are from first ore to last ore additions

Date: May 5, 2012
Experiment: 50
Location: Wareham
Team: none!
Furnace: standard Short Shaft
clay cobb on plinth
tap arch (bottom extraction)
Size: 28.5 cm ID / 48 cm stack height
Source: production furnace in metal shell
Tuyere: standard forged copper at tip 2 cm
Placement: 5 cm proud
set at 22.5 degrees down
Bellows: standard electric blower / 900 LpM
Charcoal: 48 kg, mixed oak / maple
Consumption: varies, about 16 minutes/charge
8.4 m/kg
Ore:
mixture of types / ?? Fe
43.9 kg
Sequence:
steady increase to 3 kg charges
7.2 min/ kg
Duration
: main sequence about 7 hours
Result: large bloom 12.3 kg / compressed to 8.8
Yield: 28 % at extraction
Notes: massive effort as single

b2b
Date: May 26, 2012
Experiment: 51 / D27
Location: Wareham
Team: Neil Peterson
Furnace: banked Short Shaft
clay and manure cobb
'slag room' (bottom extraction)
Size: 28 x 26 cm ID flat at front x 53 H cm total / 48 cm shaft height
Source: working space based on Hals Iceland
Tuyere: 2.5 cm ID ceramic tube
Placement: 10 cm above ash base
5 cm proud
set at 22 degrees down
Bellows: standard electric blower
delivery at 800 LpM
Charcoal: 49 kg, type?
Consumption: varies, average 12 m per charge
10.8 m/kg
Ore: DD1 = 48 % Fe
total 31.8 kg
Sequence: regular increase from 1 to 3 kg / charge
6.5 m/kg
Duration: about 5 1/2 hours
Result: 11.1 kg bloom
Yield: 35 %
Notes: wall thickness reduced to 4 cm
slag tap

Date: August 11, 2012
Experiment: 52
Location: Goderich ON
Team: Celtic College students
Furnace: Short Shaft on plinth
top extraction
Size: 27 x 29 cm ID x 64 H
Source: standard teaching system
Tuyere: standard ceramic tube 2.5 cm
Placement: 15 cm above base
5.5 cm proud
set at 22.5 down
Bellows: electric blower
Air: 800 LpM
Charcoal: 50 kg, maple
Consumption: 1.8 kg charcoal every 12 minutes
6.7 m/kg
Ore:
DD1A = 55 % Fe
24 kg
Sequence: ore charges recorded by 'scoops'
7.6 m/kg
Duration: about 6 hours (including preheat)
Result: 7.1 kg bloom
Yield: 22 %
Notes: combination teaching & demonstration

extract

TEAM PARTICIPANTS

Dark Ages Re-creation Company
Neil Peterson, Kelly Probyn-Smith

IRON SMELT LINKS
Lee Sauder
DARC - Iron Experiments



Unless indicated, All text and photographs 2005 - 2021 Darrell Markewitz - the Wareham Forge