Dongtai Huanghai Refractcries Factory

Castable refractory for cement kiln and boiler

Application：
The Corundum wear castable: pulverized coal burner, fluidized bed, power generation boilers, rotary kiln mouth, cooler mouth.
Alumina castables: cement kiln inlet, kilns, coolers, under the feeder.
Clay castable: pre - heater with kiln hood and cyclone.
Feature：
According to the service conditions of different parts of cement kiln and boiler, corundum, high aluminum and clay castable prepared by corresponding refractory aggregate, binding agent, additive are selected. It is of high heat and cold strength, good wear-resisting property, resistance to heat shocks, anti-stripping and good stability of volume in high temperature.
Physical and chemical indicators:

Name of commodity		Corundum wear-resistant castable			High AL castable			The clay castable
Performance and index		Hh-3.1	Hh-3	Hh-2.9	Hh-2.6	Hh-2.4	Hh-2.3	Hh-2.2
Chemical composition（%）	AI2O3	95	92	85.0	70	65	50	40
	SiO2	0.5	0.6	10	14	28	41	96
	CaO	3.2	3.2	3.3	2.5	2.5	5	6
Bulk density（g／m3）		3.1	3	2.9	2.6	2.4	2.3	2.2
high-heat strengthMpa）	110℃×24h	75	85	90.0	48	45	40	32
	1100℃×4h	86	92	97	70	65	60	45
	1450℃×4h	100	105	107	90	80	72	60
Flexural strength（Mpa）	1100℃×4h	8	10	11	10	9	8	6
Flexural strength（Mpa）	1450℃×4h	12	13	14	12	11	10	9
Heating wire changes（%）	1100℃×4h				±0.2	±0.3	±0.4	±0.5
Heating wire changes（%）	1450℃×4h	±0.3	±0.3	±0.4	±0.3

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

　
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