Brown University - Experimental Archeaology & Iron

April 2011
CLOCK ELAPSED EVENT AIR   CHARCOAL     ORE  
          UNIT COUNT TOTAL UNIT TOTAL
      mark P bucket   kg added kg kg
          E=1.8 kg        
12:00   start wood splints pre-heat              
    very gentle air (maintain burning)              
12:41   plug tap arch              
12:50   add rough charcoal     2        
12:55 :55 fill with graded charcoal 800   1 3 5.40    
    start main sequence              
                   
1:03 :08 added charcoal     1 4 7.20    
1:14 :11       1 5 9.00    
1:24 :10   900 2 1 6 10.80    
1:32   heat zone to top              
1:36 :12       1 6 10.80    
1:43 :07       1 7 12.60    
1:48 :05           0.00    
1:53   first ore addition              
1:54   adjusted air 850            
2:04 :16 ore as 1 kg     1 8 14.40 1 1
2:16 0:12       1 9 16.20 1 2
2:33 :17       1 10 18.00 1 3
2:43 :10       1 11 19.80 1 4
2:58 :15       1 12 21.60 1 5
3:12 :14 increase ore charge     1 13 23.40 1.5 6.5
3:33 :21       1 14 25.20 1.5 8
3:35   tuyere shoved into furnace              
    air blast fails during repair              
3:45   convert to 2" pipe tuyere 1400            
3:53 :20 resume sequence     1 16 28.80 1.5 9.5
4:01 0:08       1 17 30.60 1.5 11
4:10 :09 addition of DD2 analog     1 18 32.40 1.5 12.5
4:19 :09       1 19 34.20 1.5 14
4:27 :08       1 20 36.00 1.5 15.5
4:41 :14       1 21 37.80 1.5 17
4:52 :11       1 16 28.80 2 19
5:05 0:13 mix = 1.5 k DD2 + .5 k haematite     1 17 30.60 2 21
5:17 0:12 mix = 1 k haematite + 1 k rock     1 18 32.40 2 23
5:28 :11 all rock ore     1 19 34.20 2 25
5:39 :11       1 20 36.00 2 27
5:49 :10       1 21 37.80 2 29
    (end of record)              
                   
                   
                   
    time (total) E 6:00            
    time (main sequence) 5:45            
    total charcoal E 45 kg            
    total ore 29 kg            
    total high Fe ore   10.4 kg          
    bloom 2.2 kg            
    yield (against total) 8%            
    yield (corrected to high Fe ore)   21%          

Last Updated on 10/16/11
By Darrell Markewitz