3000 Degree Fire Brick, A super duty fireclay brick

3000°F+ High Density Fire Bricks - Canadian Forge & Farrier

High Fired Super Duty Drying Pressing Alumina Bauxite Fire Clay Refractory Bricks - China Clay Firebrick, Fire Brick

Lynn Manufacturing Insulating Fire Brick, Heat Insulation Block, Low Thermal Conductivity, 2.5 x 4.5 x 9, Pack of 4, 3000F-Rated, for Kilns, Forges, Furnaces, Soldering, 3130R : Arts, Crafts & Sewing

Refractory High Alumina Super Duty Fire Brick for Furnace Lining - China Refractory Dense Fire Brick, Fireclay Brick

Lynn Manufacturing Insulating Fire Brick, Heat Insulation Block, Low Thermal Conductivity, 2.5 x 4.5 x 9, Pack of 4, 3000F-Rated, for Kilns, Forges, Furnaces, Soldering, 3130R : Arts, Crafts & Sewing

This is the same burner that's included with the Graham Forges. This burner produces 100K BTU and is capable of running a propane tank sized forge.

Graham 100K BTU forced air burner-214

Fire Brick Deco-Crete Supply

Lynn Manufacturing Insulating Fire Brick, Heat Insulation Block, Low Thermal Conductivity, 2.5 x 4.5 x 9, Pack of 4, 3000F-Rated, for Kilns, Forges, Furnaces, Soldering, 3130R : Arts, Crafts & Sewing

WireJewelry High Density/Super Duty Hard Fireclay Brick, Rated Up to 3200 Degree Fahrenheit - 2 Pack : Tools & Home Improvement

Alsey Firebrick 9x4.5x2.5 (Full Size Brick) – Exteriors Direct

What is the difference between clay firebrick and high alumina refractory brick? - Quora