Granular furnace refractory bricks are made by pressing high-quality expanded vermiculite with a certain amount of binder. These bricks have a melting point of 1150℃ and also provide heat insulation and preservation. They are lighter than common clay, with a density of 500-800KG/cubic meter, and can be produced in different weights according to customer requirements. The bricks have a room temperature strength of 4.67 kN and can be cut, drilled, and grooved. They can be shaped differently to meet various customer needs.