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Blast Furnace

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Blast Furnace

The Blast Furnace is a members only minigame situated in Keldagrim for smelting bars which require coal. The furnace here only requires half as much coal when smelting usually, so it can be useful when smelting the ores that require more coal. It is designed to be used by a team, but it can also be worked by a single player if the correct strategy is followed.

The Blast Furnace worlds on RuneScape are World 358 and 386, which are hosting British and American servers respectively.


Keldagrim map

The Blast Furnace can be accessed in East Keldagrim by going downstairs in the building with the furnace icon.

  • Smithing level 60 (cannot be boosted) or a 2500-coin (1250 coins when wearing a Ring of charos) entrance fee, for 10 minutes to utilise the furnace for smelting bars.

Note that for teams, all of the following level requirements must be met for the team overall, not for each individual. However, players using the Blast Furnace on World 358 and 386 will not need these requirements, provided they pay 60,000 coins per hour to the coffer near the bank chest.

  • Strength level 30, for pumping the stove (Skillers can have someone else pump for them.)
  • Agility level 30, for pedaling the conveyor belt.
  • Crafting level 30, for fixing the broken pipes and parts of the pedaling machine.

Traveling and getting to the Blast FurnaceEdit

Getting to Keldagrim

From Seers' Village or Camelot, follow this path.

Keldagrim Northeast Mine

After arriving in Keldagrim, go to the east side of town and downstairs in the building marked with the furnace icon.

A player can only visit the Blast Furnace after visiting Keldagrim. To visit Keldagrim, the player must have started or completed the quest The Giant Dwarf. The player does not need the levels or items required to finish the quest, only to start the quest. Once the player has visited Keldagrim, they can return via mine cart from the Dwarven Mines under Ice Mountain. The player can also use the Quick Minigames Teleport to be teleported outside the Blast Furnace building. The Quick Minigames Teleport is listed in the Quest Tab under the Minigames (Red) Icon. To use this teleport, the player must have visited Keldagrim at least once. Alternatively, the player can also walk from Seers' Village/Camelot to Keldagrim via the path shown on the map in the upper-left. Once in Keldagrim, the player can run to the opposite (east) side of the town from the bank.

Suggested materials/inventory setupsEdit

Blast Furnace Map

A map of the Blast Furnace room itself.

  • Note: Remember to deposit coal first if not working with pure iron!

A spade can be picked up to refuel the stove with spadefuls of coal after depositing your ores on the conveyor belt. Coins can also be used to purchase ore there from Ordan.


Below 60 SmithingEdit

The suggested inventory for players below 60 Smithing is coins (to pay the fee every 10 minutes), a stamina potion, a bucket of water, and 25 ore. When using ice gloves, replace bucket with a hammer.

Stamina potion (4)
Bucket of water
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore
Iron ore

60 Smithing and aboveEdit

The suggested inventory for players 60 Smithing and above is a coal bag, which helps greatly, a stamina potion, a bucket of water, and 25 ore. When using ice gloves, replace bucket with a hammer.

Coal bag
Stamina potion (4)
Bucket of water

Experience ratesEdit

Full Smithing experience is gained from smelting the bars. There is an anvil nearby to smith any items you wish for additional experience. Magic experience can be gained should one choose to alchemise their produced items. Also, both Magic and Smithing experience can be gained should one Superheat their ore.

Additionally, maintaining the Blast Furnace also offers XP in other skills. However, this gives trivial XP:

Skill Action Experience
Agility Pedaling the conveyor belt 2 experience per second
Crafting Repairing the pipes or drive belt 50 experience
Strength Pumping 4 experience per second
Firemaking Putting coal in the stove 5 experience per load
Smithing Helping use the Blast Furnace 1 experience per bar loaded (by any other person)
Magic High Level Alchemy (if used) 65 experience
Magic and Smithing Superheat Item (if used) 53 Magic experience and normal Smithing experience as if you were smelting the bar in a furnace (e.g. It would give the usual 12.5 furnace XP if casting Superheat on iron ore.)

At the Blast Furnace, the following Smithing XP can be gained producing bars. Moreover, the following assumes that the player has a coal bag, hammer, and bucket of water in his or her inventory, thus there are 25 inventory slots occupied by ore.

Bar Type Coal Needed
(in bag + in inventory = total)
Primary Ore # of Bank
Trips (from bank to furnace)
Bar Yield Total
XP [1]
Steel 25 + 0 = 25 25 Iron ore 1 25 437.5
Mithril 25 + 25 = 50 25 Mithril ore 2 25 750
Adamantite 25 + 25 + 25 = 75 25 Adamant ore 2 25 937.5
Runite 25 + 25 + 25 + 25 = 100 25 Rune ore 3 25 1,250
  1. You also get 1 XP per additional person loading if you help out. For example, if there are four other people excluding yourself, you'll get 4 Smithing XP extra.


The number of bars per hour will vary depending on team size and how quickly pipes are fixed.

BF Bars
  • Bronze: 950 - 1,250 bars per hour
  • Iron: 5,000 - 5,700 bars per hour (Blast Furnace has a 100% ore to bar ratio for iron.)
  • Steel: 3,000 - 3,500 bars per hour
  • Gold/Silver: 5,000 - 5,700 bars per hour
  • Mithril: 3,000 - 3,300 bars per hour
  • Adamantite: 2,200 - 2,500 bars per hour
  • Runite: 1,800 - 2,000 bars per hour

Experience per hourEdit

  • Bronze: 6,000 - 7,000 XP per hour
  • Iron: 60,000 - 70,000 XP per hour
  • Steel: 50,000 - 60,000 XP per hour
  • Gold WITHOUT Gauntlets: 110,000 - 130,000 XP per hour
  • Gold WITH Gauntlets: 280,000 - 320,000 XP per hour
  • Mithril: 90,000 - 100,000 XP per hour
  • Adamantite: 82,000 - 93,000 XP per hour
  • Runite: 90,000 - 100,000 XP per hour

The best rates are only achieveable when working together in a team to get the fastest bars possible. Joining a team or clan will greatly boost your bars and experience.

Collecting raw materialsEdit

Raw materials can be obtained in two ways:

  1. A player can have ore in their bank, and use the bank chest conveniently located in the Blast Furnance itself.
  2. Buy ore from Ordan who runs the Ore Seller shop (up to mithril). Ordan usually sells ore for cheaper than street price while his stock is 50 or above, so many players choose to supplement their supply of banked ores by buying ore from Ordan when his stock is high. Therefore, on a busy world, Ordan's stock will often be at less than the max of 100 (which is especially true with coal).

Operating the Blast FurnaceEdit

BF Plan

Blast Furnace Plan

The process for operating the Blast Furnace is as follows:

  1. Place coal and/or ore on the Conveyor Belt.
  2. Turn the Conveyor Belt by operating the Pedals.
  3. Repair cogs or drive belt (if broken) using a hammer.
  4. Collect coke via using the spade to refuel the Stove.
  5. Operate the Pump.
  6. Repair pipes (if broken).
  7. Cool down smelted bars with a bucket of water from the sink.
  8. Collect the bars from the bar dispenser.
  9. Repeat!
  • Note: Always keep your coal bag full, and focus your run energy toward putting the maximum amount of coal on the conveyor belt, which is 254, although 225 or 250 is a decent amount for optimal Smithing. Sometimes, it will only allow you to place up to 225 coal max until your bars are finished. If you have 200 coal or under, you can usually place more coal on the belt. Afterwards, place a full load of your primary ore. The max amount of primary ore that may be placed is 28. Replenish your inventory with your primary ore, and place it on the belt after bars have been produced so that your bars can be processing while you bank your made bars.

Single-player strategyEdit

BF Solo

Blast Furnace Camera Spot: Keep an eye out for any broken pipes!

This can be hard work but it works.

  1. Collect the materials in the desired way.
  2. Place them on the conveyor belt (just left click on the belt to put them all on at once). Remember to place coal first if working with steel, mithril, adamant, or rune with the correct ratio of ores (1:1 iron to coal, 1:2 mithril to coal, 1:3 adamantite to coal, and/or 1:4 runite to coal). For the long haul, place 25 pieces of coal on the belt ten times (250 coal total) and then a load of 25 of your preferred ore afterwards each time.
  3. Pedal the conveyor belt so that the ores go into the furnace. Repair the drive belt or cogs if jammed. 
  4. Collect the hammer if you didn't bring one and/or the spade from their respawn places in the room. The hammer spawn point is in the north-east corner on a table, and the spade spawns on the floor next to the re-fuel area.
  5. Now, fuel up the machine. There's no point in only putting in a little fuel as it will run out when it's needed, so it's important to put enough in. Repeatedly click on "Collect Coke" and then "Refuel Stove." Notice the colour of the three lines on the stove to know if you've put enough in. The more fuel you put in results in the colour changing from brown to orange and then finally to red. When it is red, there's enough fuel, but adding a dozen more spadefuls of coke helps greatly.
  6. Now, move onto pumping the machine. First, check that there are no pipes broken. If there are, click on them, and you'll repair them with your hammer.
  7. Start pumping! Players do not need to check the gauge when pumping, contrary to popular belief. While pumping, position the 'camera' so one can see the bar dispenser, pipes, and stove top.
  8. Repair the drive belt, cogs, or any pipes that break while pumping. Sometimes, many will break and it will take a while; other times, none will break.
  9. When the bar dispenser turns a golden colour (and if the sound effects are on, one will hear a splat), stop pumping as the bars are done, or you'll get damaged by a blast of hot air.
  10. Collect the bucket if one isn't already in your backpack, and fill it with water from the sink, and use bucket with the bar dispenser.
  11. Collect the bars and repeat the whole process.

Team playingEdit

Team playing on the Blast Furnace is much easier than attempting it yourself as people can assume different jobs, so a single person doesn't overwork him or herself over multiple tasks and spreads the jobs evenly among fellow players. This option also allows for the faster gathering of experience.

Blast Furnace W358

The three dwarves here operating the furnace are only available on World 358 and 386.

Exclusive to World 358 and 386, the official Blast Furnace worlds, players can place 60,000 coins into the coffer next to the bank chest to have three dwarves operate the pump (Pumpy), refuel the stove (Dumpy), and pedal the pedals (Stumpy) for one hour. Players will not be able to interfere with them, allowing the furnace to be operated at maximum efficiency.

Ordan the Ore SellerEdit

Main articles: Ordan and Ore Seller

The Ore Seller, run by Ordan, is one of many of the stores in Keldagrim and can found downstairs in the Blast Furnace factory in the eastern side of Keldagrim. This shop stocks ore used for Smithing. 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 reaches 100 of a particular ore type the extra are "sent to storage".


Item Number
in stock
sold at
Copper ore Copper ore 100 4 15
Tin ore Tin ore 100 4 36
Iron ore Iron ore 100 27 117
Mithril ore Mithril ore 100 243 314
Silver ore Silver ore 100 121 80
Gold ore Gold ore 100 225 417
Coal Coal 100 109 181

Possible methodsEdit

Note: There is a maximum of 254 coal and 56 primary ore in the furnace.

High-level oresEdit

All high-level ore, such as (adamantite and runite), must be in the player's bank as they cannot be bought from Ordan. Coal can be bought from Ordan, but the quantities required for high-level ore usually exhaust his stock after only making one inventory of bars. Therefore, it is recommended that players only use Ordan as a supplemental source and have most or all of the required coal in their bank.

Mithril-processing from the shopEdit

Ordan sells all types of ore up to mithril, which allows a player to train Smithing without mining ores. The process for smelting mithril bars is as follows:

  1. Purchase mithril and coal from Ordan in the ratio two coal per one mithril.
  2. Make two trips of 27 coal (or one trip if using a coal bag with a loaded inventory) and another trip with 27 mithril.
  3. Operate the Blast Furnace to obtain 27 mithril bars as described thoroughly in the aforementioned Single-player Strategy.
  4. Smith the bars into items and bank them or bank the bars directly using the Blast Furnace bank chest.
  5. One can repeat this until the shop runs out of ores. The coal supply generally runs out first; hence, players may need to switch to another world or supplement the store coal supply with banked coal.


  • 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.

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