To cut down on the entrance cost We recommend you purchase The Ring of Charos (a). But, do not use the 'pay' option with the Blast Furnace foreman, as it can void the benefits of the ring. The ring can be obtained by completing The Creature of RS Gold Fenkenstrain questline.
Bringing Ice Gloves into the Blast Furnace will be beneficial when you're using the bar dispenser, because they will cool them down quickly and make them easier to collect. This will help you save time, instead of hauling buckets of water repeatedly to cool your bars (and it'll help you save space in your inventory too).
Before you start your journey to the Blast Furnace It's important to know that it's only available across the four worlds: 352, 355 (358), 386 and 387. Once you've spoken the Giant Dwarf and entered Keldagrim You must head north and make your way to cross the bridge. Once you've crossed it, continue south until you find that Blast Furnace icon on the map. Inside the designated building, walk downstairs and you'll find the furnace itself.
After this is done and you'll be much more able to get there when you return. You can take advantage of your Grand Exchange shortcut on the northwest wall, take an excursion in the minecart through Ice Mountain dwarven mines or make use of the minigame group locater to appear outside the building.
It may take some time to get acquainted at first but playing the minigame on the Blast Furnace is an easy task. To make use of the furnace you must follow these steps: Put your ore into the conveyor belt. Take a run on the ramp that has been prepared with Buy OSRS Gold a bucket full of water or gloves that are ice. You can cool your bars down and store them.