DARC - Fall Smelt : November 2006

Virginia Rock Ore in Norse Short Shaft

		EVENT	ORE				CHARCOAL		AIR
ELAPSED	COMPARE		ADD (scoops)	AMOUNT	TOTAL	COMPARE	TOTAL	COMPARE	SETTING	VOLUME
			(410 gms each)	(as KG)	(as KG)	(AS LB)	(1 KG each)	(AS LB)		(litre/min)

		start preheat
40		addtion of rough carcoal							B	700
10									D	1060
5		start graded fuel

0							1
4							2
6							3
7							4
5		burn column to top of clay					5
8		start of ore charges	5	2	2		6
7	15		5	2	4	8.8	7	4.4
7			5	2	6		8
4	11		5	2	8	8.8	9	4.4
8			5	2	10		10
5	13	first ore hits tuyere?	5	2	12	8.8	11	4.4
7		rod tuyere	5	2	14		12
6	13		5	2	16	8.8	13	4.4
7			6	2	18		14
5	12		6	2	20	8.8	15	4.4
6		last ore charges	2	0.8	20.8		16
6							17
8							18
7		start burn down					19

31		start emptying furnace							B	700

		TOTALS	LBS		47		42
			KG		21.00		19.00

NOTES:

1) Significant error was made in the amounts of charcoal used per charge. After the actual measue used was wieghed - it was found the additions were NOT in 4 lb amounts
as had been originally intended. The actual charge amount was only 1 KG / 2.2 lbs.
2) After weighing the ore scoop amount, it was found each scoop was in fact .9 lbs / 410 gms.
3) A new charoal source was used for this smelt. The material was well dried, and composed of more evenly broken pieces than had been used in the past. The source wood was
all oak.
4) The base of the smelter was NOT fixed via the addition of compressed charcoal fines as had been done in the past. The base was allowed to establish itself from the collected
wood ash from the pre-heat, plus addtiional charcoal. This resulted in the slag bowl forming significantly lower than what had been seen in the past. (roughly 10 plus cm below the
bottom of the tuyere.

Last Updated on 6/11/06
By Darrell Markewitz
Email: smelt@warehamforge.ca