Blast Furnace

Template:BuildingInfo A Blast Furnace is a moderately-advanced type of furnace, used to smelt ore into metal.

One run of a Blast Furnace takes 10 minutes. It can convert 1000 ore and 10 charcoal into 60 metal. However, output is halved (max 30 metal) if the furnace is allowed to run to the end. Thus, for optimal results, you must be around to open the furnace just before the 10-minute mark.

If you want to use a fire-and-forget method with a Blast Furnace, then you can load the furnace with only 9 charcoal, so that the furnace runs out of fuel before the 10-minute mark. This method will convert a batch of 1000 ore into 54 metal.

Source

This building becomes available after you have learned the Metallurgy tech.

Compare all Furnaces.

Cost

Use

Smelt Ore to produce Metal

Uses Charcoal for fuel.

Operation

Holds up to 1000 ore
Holds up to 10 Charcoal
Burns 1 Charcoal per minute for a maximum of 10 minutes
30 metal after 10 mins
60 metal if opened just before 10 mins
Note that the 60 metal recipe is twice more CC efficient than Gyration Cell.

FaF = Fire and Forget

Ore Used	CC Used	Metal Yield	Time opened	Ore Cost/Metal	CC/Metal	CC/Ore	Metal Yield/1000 Ore	CC Cost/1000 ore
10	9	1	FaF	10.00	9.0	0.9	100.0	900.0
28	9	2	FaF	14.00	4.5000	0.3214	71.43	321.43
491	10	29	9:55	16.93	0.3448	0.0204	59.06	20.37
500	9	27	FaF	18.52	0.3333	0.0180	54.00	18.00
968	10	58	9:55	16.69	0.1724	0.0103	59.92	10.33
990	10	59	9:56	16.78	0.1695	0.0101	59.60	10.10
991	9	54	FaF	18.351	0.1667	0.0091	54.49	9.08
1000	9	54	FaF	18.52	0.1667	0.0090	54.00	9.00
1000	10	60	9:55	16.67	0.1667	0.0100	60.00	10.00
1000	10	30	FaF	33.33	0.3333	0.0100	30.00	10.00