Dongtai Huanghai Refractcries Factory

Carborundum,silicon nitride-carborundum,cordierite-mullite,cordierite kiln furniture

Application:
Applied in high-temperature kiln of industries like ceramics, electrotechnical porce-lain, electronic ceramics, such as push pedal, flame insulation board, saggar, refractoryboard, snap-gauge, guide rail, base plate, high temperature bearing plate, burner block and also can be used as the lining of rotary kiln or other thermotechnical kiln with tem-perature shock
Feature:
High thermal conductivity, heat resistance, anti-thermal shock, low expansion,erosion resisting, stand wear and tear.
Physical and chemical indicators:

Name of commodity Performance and index	SiO2 SiC	Si3N4 SiC	cordierite bonded mullite	Sillimanite	Cordierite
Bulk density g／cm3	2.6	2.6	1.85	2.3	1.8
Compressive strength at ambient temp Mpa≥	80	85	35	60	28
Coefficient of heat expansion 1／℃×106	4.8	4.6	4.6	4.8	4.2

Apparent porosity ％≤	18	18	25	22	22
AL2O3%≥	SiC 85	SiC 70	42	65	35
SiO2%	10	Si3N4≥20	50	32	50
Fe2O3%≤	1.0	1.0	MgO 7	1.2	MgO 6
Heat conductivity ≤ 350±20℃w／m．K	4.2	16.5	1.5	1.5	1.5

Highest use temp ℃	1400	1450	1350	1400	1250
Flexural strength at ambient temp Mpa≥	25	30	15	15	20
Heat shock stability 1100℃water cooling／times	40	60	30	25	35

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

　
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