Blast Furnace

"Blast" redirects here. For the mine, see Blast mine. For the elemental combat spells, see Blast spells.

"Bf" redirects here. For the amulet, see Amulet of blood fury.

This article has a strategy guide.

All information on mechanics and strategy will be on this page.

Blast Furnace
Released								23 August 2005 (Update)
Type								Minigame
Members								Yes
Location								Keldagrim
League region								Fremennik✓
Participants								1+
Skills								Smithing, Firemaking, Strength, Agility, Crafting
Reward currency								N/A
Tutorial								No
Music								Have a Blast
Map
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The Blast Furnace is a members-only minigame situated in Keldagrim that involves smelting bars in bulk. The furnace here only requires half as much coal compared to a usual one, which is useful when smelting high-tier ores that require more coal.

Requirements

• Started The Giant Dwarf to gain access to Keldagrim.
• 2,500 coins per 10 minutes of use. 60 Smithing^{(not boostable)} allows you to skip this fee.
  • Equipping the ring of charos (a) will reduce the entrance fee to 1,250 coins, if you go through Blast Furnace Foreman's dialogue ( 1•3•2•3)…

    1
    3
    2
    3

    .
  • On Blast Furnace themed worlds, there is an additional fee of 72,000 coins to use the Blast Furnace per hour; you don't need to pay all at once, as the fee is time based (12 coins per tick). 111-140 Coins can be deposited in the coffer with run on for maximum efficiency. Coins can be deposited in the coffer near the bank chest to pay the fee. On all other worlds, there is no extra fee but players must work together to operate the Blast Furnace.
• While bars will cool down on their own with time, wearing ice gloves allows the player to retrieve bars directly and immediately.
  • Alternatively, a bucket of water can be used at the bar dispenser to cool the heated bars immediately. An empty bucket spawn and water source can be found nearby. However, this approach is strongly discouraged, as it takes up an inventory space and increases interactions needed.

Getting there

From Seers' Village and Camelot, follow this path.

The Blast Furnace is located in Keldagrim. To enter Keldagrim, the player must have started the The Giant Dwarf quest by speaking to the Dwarven Boatman within the mines east of Rellekka. The map on the right shows a path the player can take walking from Seers' Village/Camelot to the mines east of Rellekka. Once the player has visited Keldagrim at least once, they can return via mine cart from the Dwarven Mines under the Ice Mountain or the Grand Exchange, or use the Grouping teleport to teleport right outside the Blast Furnace building.

The Fairy ring system can be used in two ways: Either travel to ring DKR to go immediately west of the Grand Exchange, use its underwall tunnel north of the ring (requires 21 Agility) and then the mine cart, or travel to ring DKS, which puts the player a short walk to the south-west to the Keldagrim entrance.

Bank chest

Near the water pump and the coffer is a bank chest, which players can use to more efficiently use the furnace. Note that time spent with the bank chest interface open will deplete the coins in the coffer.

Official worlds

There are 15 Blast Furnace worlds on Old School RuneScape, all of which make soloing the Blast Furnace easy as there are five different dwarves—Dumpy, Stumpy, Pumpy, Numpty, and Thumpy—operating the mechanics of the Blast Furnace, so the player only has to focus on running the ores to the conveyor belt. There is an additional 72,000 coins fee per hour to use the Blast Furnace on these worlds, which is deposited in the coffer near the bank chest.

World	Location	Members	Activity
352	Germany	1	Blast Furnace
355	United States (west)	1	Blast Furnace
356	United States (west)	1	Blast Furnace
357	United States (west)	1	Blast Furnace
358	United Kingdom	1	Blast Furnace
386	United States (east)	1	Blast Furnace
387	Australia	1	Blast Furnace
395	Germany	1	Blast Furnace
424	Australia	1	Blast Furnace
466	Germany	1	Blast Furnace
494	United States (east)	1	Blast Furnace
495	United States (east)	1	Blast Furnace
496	United States (east)	1	Blast Furnace
515	United Kingdom	1	Blast Furnace
516	United Kingdom	1	Blast Furnace

Experience rates

Main article: Blast Furnace/Strategies

Full Smithing experience is gained from smelting the bars. There is also an anvil nearby to smith on, requiring level 60 Smithing to access.

At the Blast Furnace, the following Smithing experience rates can be gained producing bars. The tables assume that the player is wearing ice gloves and, when applicable, has a coal bag or goldsmith gauntlets in their inventory, leaving 27 inventory slots occupied by ore. Hybrid bar patterns utilise 26 inventory slots for ore, as they need both the coal bag and the goldsmith gauntlets.

For better rates, use the Barbarian vial smash perk unlocked through Alfred Grimhand's Barcrawl when sipping energy restores and stamina potions.

Bar		Smithing		Default		Coal bag
		Level	XP	Bars/h	XP/h	Bars/h	XP/h
	Bronze	1	6.2	2,900–3,400	18,000–20,100	No change
	Iron	15	12.5	5,800–6,850	72,500–85,600	No change
	Silver	20	13.6	5,800–6,850	78,900–93,200	No change
	Steel	30	17.5	2,900–3,400	50,800–59,500	4,650–5,450	81,400–95,400
	Gold	40	22.5	5,800–6,850	130,500–154,100	No change
	Gold (gauntlets)	40	56.2	5,600–6,600	314,700–370,900	No change
	Gold (Smithing cape)	99	56.2	5,800–6,850	326,000–385,000	No change
	Mithril	50	30	1,900–2,250	57,000–67,500	3,150–3,700	94,500–111,000
	Mithril hybrid	50	43.1	N/A		2,225–2,625 mithril 2,225–2,625 gold	191,800–226,300
	Adamantite	70	37.5	1,450–1,700	54,400–63,800	2,400–2,800	90,000–105,000
	Adamantite hybrid	70	50	N/A		1,475–1,750 adamantite 2,950–3,500 gold	221,100–262,300
	Runite	85	50	1,150–1,350	57,500–67,500	1,900–2,250	95,000–112,500
	Runite hybrid	85	54.7	N/A		1,100–1,300 runite 3,300–3,900 gold	240,500–284,200

Collecting raw materials

Raw materials can be obtained in two ways:

1. Having ore in the bank, using the bank chest.
2. Buying ore from Ordan who runs the Ore Seller shop (up to mithril). Ordan usually sells ore cheaper than GE price, putting them in high demand and causing players to world-hop for them. Therefore, Ordan's stock will often be diminished, especially with coal, making it rarely profitable or advantageous to rely on it for on-site procurement.

Operating the Blast Furnace

A map of the Blast Furnace room itself.

Blast Furnace worlds

The official Blast Furnace worlds provide a great level of convenience and are the de-facto way to use the Blast Furnace. It is unlikely to find a player run furnace and, at most, the stations are used to train other skills. The process for operating the Blast Furnace on an official world is as follows:

1. Place coal and/or ore on the conveyor belt.
2. Cool down smelted bars with a bucket of water. This step can be skipped if ice gloves are equipped when collecting the bars.
3. Collect the bars from the bar dispenser.
4. Bank.
5. Repeat.

Manual operation

The process for operating the Blast Furnace manually is as follows:

1. Place coal and/or ore on the conveyor belt.
2. Turn the conveyor belt by operating the pedals.
3. Repair any broken cogs, pipes, or drive belt using a hammer.
4. Collect coke from storage using a spade to obtain a spadeful of coke.
5. Refuel the adjacent stove with the scooped-up coke.
6. Operate the pump, while keeping the pipes repaired.
7. Keep an eye on the temperature gauge to prevent the furnace from overheating.
8. Cool down smelted bars with a bucket of water from the sink. This step can be skipped if ice gloves are equipped.
9. Collect the bars from the bar dispenser.
10. Bank.
11. Repeat.

Notes

• Caution: When smelting steel bars, make sure that coal is already loaded in the furnace, or at least deposited before the iron ore. Otherwise, the furnace will yield iron instead of steel.
• The coal bag can be filled straight from the bank by using the Fill option on it, which is accessible with a shift-click.
• The maximum amount of coal which may be placed in the Blast Furnace is 254 ores, or a little over 9 inventories.
• The maximum amount of primary ores (the metal itself) which may be placed in the Blast Furnace is 28, and another 28 bars may be stored at one time. Attempting to place more than 28 primary ores without collecting the 28 bars in the dispenser results in an error that says: "You should collect your bars before making any more."
• Logging out or disconnecting while only coal is upon the conveyor belt results in permanent loss of that coal. However, if the coal is paired with another ore, it will remain on the belt after disconnecting.
• If using ice gloves and goldsmith gauntlets, remember not to equip the ice gloves UNTIL the smelting process is complete and the experience drops. Doing so too early negates the gauntlets' bonus. For safety, equip the gauntlets again as soon as the bars are collected.
• On Blast Furnace activity worlds, the minimum amount of money required for a single run that should be deposited in the coffers is 109 coins if running, and 217 coins if walking. This requires standing north of the coffers and moving directly towards the conveyor belt on the same tick as depositing the coins.
• A token amount of contribution experience is awarded to all participants when bars are dispensed during manual operation of the Blast Furnace.

Products

Failed to find products using that facility - ensure it is spelled correctly. (ERR: no results from SMW)

Ordan the Ore Seller

Main articles: Ordan and Ore seller.

The Ore seller., run by Ordan, is one of many of the stores in Keldagrim and can be found immediately west of the conveyor belt. The shop is restocked by dwarves that regularly enter the room and deliver a number (around 30) of one type of ore to the shop, rather than restocking 1 of every ore periodically. When the shop stocks 100 of a particular ore type the extra are "sent to storage".

Stock

Sells at: 150.0% • Buys at: 40.0% • Change per: 0.0%

Item		Number in stock	Restock time	Price sold at	Price bought at	GE price
	Copper ore	100	2m (200t)	4	1	27
	Tin ore	100	2m (200t)	4	1	27
	Iron ore	100	2m (200t)	25	6	209
	Mithril ore	100	2m (200t)	243	64	134
	Silver ore	100	2m (200t)	112	30	65
	Gold ore	100	2m (200t)	225	60	157
	Coal	100	2m (200t)	67	18	152

Changes

Date	Changes
[[{{#explode:27 July 2022| |0}} {{#explode:27 July 2022| |1}}]] [[{{#explode:27 July 2022| |2}}]] (update)	The Blast Furnace is now a safe zone on PvP worlds, due to occasional incidents of luring around the bank chest.
[[{{#explode:9 September 2021| |0}} {{#explode:9 September 2021| |1}}]] [[{{#explode:9 September 2021| |2}}]] (update)	Pumping at the Blast Furnace will now continue giving players Strength experience, even if the pipes are broken.
[[{{#explode:14 February 2019| |0}} {{#explode:14 February 2019| |1}}]] [[{{#explode:14 February 2019| |2}}]] (update | poll)	Items dropped in the Blast Furnace room will now only ever appear to the person who dropped them.
[[{{#explode:17 January 2019| |0}} {{#explode:17 January 2019| |1}}]] [[{{#explode:17 January 2019| |2}}]] (update)	The total amount of Blast Furnace themed worlds was increased from 7 to 15.
[[{{#explode:25 October 2018| |0}} {{#explode:25 October 2018| |1}}]] [[{{#explode:25 October 2018| |2}}]] (update)	Box traps may no longer be placed at Blast Furnace.
[[{{#explode:29 March 2018| |0}} {{#explode:29 March 2018| |1}}]] [[{{#explode:29 March 2018| |2}}]] (update | poll)	The Blast Furnace Bar Stock interface has been replaced with the new Make-all interface.
[[{{#explode:5 October 2017| |0}} {{#explode:5 October 2017| |1}}]] [[{{#explode:5 October 2017| |2}}]] (update)	You can now examine the Blast Furnace's Melting pot in order to check which ores, and how many, have been added to the Blast Furnace.
[[{{#explode:27 July 2017| |0}} {{#explode:27 July 2017| |1}}]] [[{{#explode:27 July 2017| |2}}]] (update | poll)	Two more dwarves were added to the themed worlds to repair broken pipes, cogs, and the drive belt. The hourly fee was raised to 72,000 coins.
[[{{#explode:4 May 2017| |0}} {{#explode:4 May 2017| |1}}]] [[{{#explode:4 May 2017| |2}}]] (update)	The message when adding ore to the Blast Furnace can now be disabled.
[[{{#explode:15 September 2016| |0}} {{#explode:15 September 2016| |1}}]] [[{{#explode:15 September 2016| |2}}]] (update | poll)	Three dwarves were added to Blast Furnace themed worlds, and will operate the furnace for an hourly fee of 60,000 coins.
[[{{#explode:11 August 2016| |0}} {{#explode:11 August 2016| |1}}]] [[{{#explode:11 August 2016| |2}}]] (update | poll)	A deposit box has been added to the Blast Furnace room.
[[{{#explode:14 April 2016| |0}} {{#explode:14 April 2016| |1}}]] [[{{#explode:14 April 2016| |2}}]] (update | poll)	Wearing ice gloves when at the Blast Furnace will now allow you to pick up bars without cooling them first.
[[{{#explode:6 August 2015| |0}} {{#explode:6 August 2015| |1}}]] [[{{#explode:6 August 2015| |2}}]] (update)	Players who intentionally overheat by using the pump too much at Blast Furnace will now be kicked out temporarily.
[[{{#explode:16 July 2015| |0}} {{#explode:16 July 2015| |1}}]] [[{{#explode:16 July 2015| |2}}]] (update)	Ensured that maximums of coal and tin of 254 are enforced in the Blast Furnace.
[[{{#explode:21 May 2015| |0}} {{#explode:21 May 2015| |1}}]] [[{{#explode:21 May 2015| |2}}]] (update | poll)	The Blast Furnace Foreman gained right-click options to pay for access to the Blast Furnace.
[[{{#explode:8 January 2015| |0}} {{#explode:8 January 2015| |1}}]] [[{{#explode:8 January 2015| |2}}]] (update)	A trading post has been added to the Blast Furnace Bank.
[[{{#explode:9 January 2014| |0}} {{#explode:9 January 2014| |1}}]] [[{{#explode:9 January 2014| |2}}]] (update | poll)	A bank chest has been added to the Blast Furnace room.

Gallery

• 
  The historical bar stock; replaced with Make-X
• 
  Blast Furnace maintenance plan
• 
  The building where the Blast Furnace resides

Trivia

• Contrary to popular belief, the temperature of the stove does not affect the chance of a pipe becoming broken.
• The conveyor belt that moves the ores into the furnace has three separate sections turning independently. However, only the outer two are connected to the pedal mechanism; the inner one turns by itself.
• In the Q&A on 11 February 2010, Paul Gower stated that the Blast Furnace was created during an attempt to make a Smithing Guild.
• Originally, the Blast Furnace did not have dwarves working on the machines. They were added due to player complaints of saboteurs breaking the machines constantly.
• Oddly, the bar dispenser doesn't work while a dialogue box is open.