Dongtai Huanghai Refractcries Factory

Anti-permeability carbon brick,high-aluminum low-iron brick

Application:
Wall and lining thermal insulation material of various thermal treatment furnace carburizing furnace, nitriding furnace and other industrial furnaces.
Feature：
Extrusion molding is used, anti-permeability carbon, high-aluminum low-iron brick produced by secondary processing craft, which is of low iron content, high anti-carburi-zation, low coefficient of heat conductivity and uniform internal structure
Physical and chemical indicators
Physical and chemical indicators：

Name of commodity Performance and index	Anti carburizing bricks					High aluninum low iron brick
Name of commodity Performance and index	KST0.6	KST0.8	KST1.0	KST2.0	KST2.5	ZDLG0.6	ZDLG0.8
Bulk density g／cm	0.6	0.8	1	2	2.5	0.6	0.8
Compressive strength Mpa	2	3	4	25	35	2	3.5
Linear change on reheating ℃Xhr％≤	1250*12 0.5	1300*12 0.4	1300*12 0.4	1300*12 0.2	1300*12 0.2	1400*4 0.5	1400*4 0.5
Linear change on reheating ℃Xhr％≤	1250*12 0.5	1300*12 0.4	1300*12 0.4	1300*12 0.2	1300*12 0.2	1400*4 0.5	1400*4 0.5
A12O3 ％ ≥	42	46	48	50	56	50	52
SiO2 ％ ≤	56	52	50	48	42	48	46
Fe2O3 ％ ≤	0.7	0.7	0.7	0.7	0.7	0.5	0.5
Heat conductivity ≤350±20℃w／m.k	0.25	0.35	0.45	1.6		0.25	0.3
Highest use temp ℃	1250	1300	1350	1350	1350	1350	1350
Load softening temp ℃	1280	1350	1400	1400	1400	1400	1400

The actual parameters can be adjusted according to the requirements of users.

　
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