/cgl/ - Cosplay & EGL

Does anyone know what company I'm supposed to contact in order to purchase firebricks that can withstand 3000F and such grade? I'm trying to finish assembling my furnace and such after I manage to restore this anvil I picked up in CO later this month.

I have everything I need, barrel for frame, assembled hose feeder for gas, and assorted tools and enough scrap metal to build a house. I just for the life of me can't find or remember the specific company or video where the guy explains where to get his. It's starting to get late into 2018 and I'm worried I won't hit my 2020 deadline for my armor /diy/. Secondly, has anyone gone through the practice of actually smelting steel out of iron? Every time I try to find references I just see nerds heating up and reshaping steel rebars and what not.