Product Details

Specifications

1.Low thermal conductivity
2..Low thermal expansion

High Alumina Refractory Brick

Product Description

Definition:

Clay brick is refers to the Al2O3 content is 30% ~ 40% aluminum silicate clay products. Clay brick is made of soft clay and 50% and 50% of hard clay grog, ingredients required by certain granularity, after forming, drying, burning under the high temperature of 1300 ~ 1400 °C.

Composition:

The main mineral composition of clay brick kaolinite (2 sio2, Al2O3 · 2 h2o) and 6% ~ 7% of impurities (potassium, sodium, calcium, titanium, iron oxide).

Advantage:

1.Low thermal conductivity

2.Low thermal expansion

3.Excellent oxidation resistance

4.Excellent corrosion resistant

5.long duration

Application:

1.Good lining refractory materials in Aluminum electrolysis cell,furnace,kiln,incinerators, and reactors.

2.As Tuyere combined bricks or other combined blocks in Iron&steel industry.

3.Used as Kiln shed board, beams,slide push board, sagger.

Performance:

Thermal performance is good, resistance to thermal shock and wear corrosion resistance to spalling characteristics such as high mechanical strength low creep.

Parameter:

	TERM			Indication
				N-1		N-2a	N-2b	N-3a	N-3b		N-4	N-5	N-6
	refractoriness/°C	>=		1750		1730	1730	1710	1710		1690	1670	1580
	RUL 0.2MPa/°C,≥			1400		1350		1320			1300
	linear change on reheating /%		1400°C,2h	+0.1 -0.4		+0.1 -0.5	+0.2 -0.5
			1350°C,2h					+0.2 -0.5	+0.2 -0.5		+0.2 -0.5	+0.2 -0.5
	Apparent por/%		<=	22		24	26	24	26		24	26	28
	Cold crushing strength/MPa,≥			300		250	200	200	150		200	150	150


SiC%					≥					72
Si3N4 %					≥					21
Fe2O3 %					≤					0.5
Density					g/cm3					2.65-2.70
Apparent porosity %					≤					18
Modulus of Rupture					Mpa (at ambient temperature)					42
					Mpa(1400°C)					45
Compressive strength					MPA≥					150
thermal conductivity1250°C					W/m.k					15-18
acid-proof alkaline										Excellent
Size Difference					0-100mm					±1.0
					101-300mm					±1.5
					301-500mm					±2.0
					501mm above					±0.5%

Execution standard:

China metallurgical standard (YB/T5106—1993)

Usage:

Mainly used for coke oven, the blast furnace hot blast stove, ladle, casting system, boiler, cement kiln, glass kiln and kiln liner and thermal technology equipment, etc., are widely used in in metallurgical, chemical, ceramics, casting, machinery, electricity, building materials, oil and other industries.

Company Information

Surya Thermal Insulation Material Co., Ltd. mainly exports all kinds of industry insulation materials and refractory materials required by customers.
The calcium silicate boards we produced feature high temperature and low temperature resistance. Annual output is 30000 cubic meters.
Products are used for processing equipment, piping and furnace because of thermal insulation and soundproof and fireproof characteristics. They are applied in electric power, metallurgy, prettification, construction and vessel fields.
With professional technicians and excellent team members, Tthe products from our company got good evaluation from customers.
We sincerely welcome you to negotiate business with us. You will get super products and super service from our company.