Supply PXZT refractory material - fire bricks with high quality

PXZT refractory material - fire brick is a block of refractory ceramic material used in lining furnaces, kilns, fireboxes.....

PXZT refractory material with competitive price is your best choice.

A refractory brick is designed mainly to withstand high heat, but should also usually have a low thermal conductivity to save energy. Usually dense firebricks are used in applications with extreme mechanical, chemical, or thermal stresses, such as the inside of a wood-fired kiln or a furnace, which is subject to abrasion from wood, fluxing from ash or slag, and high temperatures. Dense fire bricks have a high thermal mass which is sometimes a useful property in that they will retain heat eg in a pizza oven after the fire has been taken out. Fire bricks are made by firing a clay based composition in the kiln until it is partly vitrified, and for special purposes may also be glazed. Fire bricks usually contain 30-40%  alumina and the primary raw material is usually chamotte with other materials. The maximum service temperature increases with increasing alumina content and bricks can be obtained with an alumina content of 80% and above.

In other, less harsh situations, such as a natural gas fired kiln, more porous bricks are a better choice, usually referred to as Insulation Bricks. They are weaker, but they are much lighter, easier to form, and insulate far better than dense bricks. In this case they have a low thermal mass and so cannot be used to store heat. Insulation bricks have a better thermal shock resistance than dense firebricks but the main disadvantage is their low strength. The insulation property of these bricks usually comes from perlite or vermiculite.

refractory fire brick characterized by good mechanical property at high temperature, Low thermal conductivity,high stength.

refractory fire brick is made from high-grade and high purity refractory powers and materials. During the process of production, organic and multiple filling materials are injected according to the required proportion. 

In addition, we also produce a various of refractory bricks based on the customer’s requirement, such as fireclay bricks, high alumina bricks,Mg-C bricks, Mg-Cr bricks, corundum bricks and so on.

Well come your detailed inquiry.

Item	Mullite brick	Re-sintered fusion mullite brick	Mullite corundum brick	Corundum mullite brick	High purity corundum brick
	MZ-70	SDM-75	MGZ-80	GM-88	GGZ-99
Max. service temperature,oC	1600	1650	1700	1750	1800
Al2O3, % ≥	70	75	80	88	99
SiO2, % ≤	25	23	18	8	0.2
Fe2O3, % ≤	0.5	0.5	0.5	0.3	0.15
Bulk density,≥,g/cm3	2.55	2.65	2.70	2.9	3.15
Apparent porosity, % ≤	17	17	19	19	19
CCS, MPa ≥	90	100	80	70	70
Refractoriness under loadoC,≥(0.2MPa,0.6%)	1630	1700	1700	1700	1700
Application	Used in upper lining, paving part and cover board of glass tank; also used as linings of other industry kilns such as carbon black reactor, etc.	Used as hat block and last block in upper part of glass tank, also used in linings of other hot-work devices	Used in upper lining, paving part and cover board of glass tank; also used as linings of other industry kilns such as carbon black reactor,etc.	Used as lining materials for various high temperature kilns such as hot blast stove and EAF, etc.	Used as lining materials in petrochemical kilns such as compound ammonia gasifier, decomposing kiln, gas generator, carbon black reactor, also used in kilns in refractory and metallurgy industries