Category: Refractory Brick

Fire Clay Brick Applications

Fireclay bricks are often used in the Metallurgy, building materials, chemical industry, petroleum, machinery manufacturing, silicate, power and other industries.

Shape	Brick	Material	Alumina Cement
Al2O3 Content (%)	30%	Refractoriness(SK)	32
Cold Crushing Strength (MPa)	25	Bulk Density(g/m3)	2.05
Porosity	2.10-2.15	Thermal Expansion At 1000°C (%)	0.6
Size	Customized

Fire Clay Brick Physical & Chemical Indicators

Fire Clay Brick SK-32
Item	Standard
AI2O3(%)	30
Fe2O3 (%)	3
Refractoriness (SK)	32
Refractoriness under load, 0.2MPa, Ta, ((°C)	1300
Porosity (%)	22-26
Bulk density (g/cm³)	2.05
Cold crushing strength (MPa)	25
Thermal expansion at 1000°C (%)	0.6
Fire Clay Brick SK-34
Item	Standard
AI2O3(%)	38
Fe2O3 (%)	2.5
Refractoriness (SK)	34
Refractoriness under load, 0.2MPa, Ta, ((°C)	1350
Porosity (%	19-23
Bulk density (g/cm³)	2.10-2.15
Cold crushing strength (MPa)	25
Thermal expansion at 1000°C (%)	0.6
Fire Clay Brick SK-36
Item	Standard
AI2O3(%)	50
Fe2O3 (%)	2
Refractoriness (SK)	36
Refractoriness under load, 0.2MPa, Ta, ((°C)	1450
Porosity (%	20-24
Bulk density (g/cm³)	2.30-2.40
Cold crushing strength (MPa)	45
Thermal expansion at 1000°C (%)	0.3

Fire Clay Brick of Furnace Photos for Different Type

Fire Clay Brick of High Temperature Furnace Packaging & Shipping

Heavy dense fire clay bricks are packed on wooden pallet with papers in each layer and PP film wrapped outside of the whole pallet.

Fire Clay Brick Manufacturer from China Refractory Material Factory – RongSheng

Zhengzhou Rongsheng Refractory Material Co., Ltd. is located in the hinterland of Central Plains, at the foot of Songshan Mountain, and adjacent to Zhengshao Highway, Longhai and Jingguang railways. The convenient transportation, abundant resources and high quality minerals provide favorable conditions for the production of refractory materials.

Established in the early nineties of twenty century, with continuous innovation and development, now it is a comprehensive enterprise in refractory material sindutry, covering metallurgy, building materials, electric power, chemical industry etc.

Our main products: refractory material for industrial furnaces, such as high-alumina brick, refractory fire clay brick, silicon brick, high-strength diatomite brick, light weight insulation brick, low iron mullite brick, etc;anti-stripping alumina brick,alkali proof brick,phosphate brick for cement industry; For the  industrial furnace and power boiler, we can provide various series of abrasive bricks,corundum brick, mullite brick, wear resistant castable, corundum castable , high strength low cement castable, impervious material,plastick refractory, etc. Our products are popular in the whole country and have been exported to India, Iran.etc.

RS refractory company adhering to the ” integrity, innovation, hard work” and business philosophy,the ” people-oriented” as the cornerstone of enterprise development, to ” the pursuit of excellence” as the core values of the enterprise, will create ” Rongsheng Brand” as a corporate strategic objectives.and product types rich scientific management processes, improve customer information management system, timely, efficient, to provide satisfactory service to our users.

FAQ

1. Are you a manufacture or trading company ?
Factory+ trade(mainly factories, at the same time, we operates other related products)

2. Can we visit your factory ?
Sure,welcome at any time, seeing is believing.

3. Is your company accept customization ?
We have own factory and excellent technical team, and we accept OEM service

4. What’s the MOQ of trial order ?
No limit, we can offer the best suggestions and solutions according to your condition.

5. Will your company supply samples ?
Yes, we do. The shipping charges should be undertaken by customer.

The chemical and mineral composition of clay brick. Clay bricks usually contain 30%~48% of Al2O3, 50%~65% of SiO2, and a little amount of alkali metals, alkaline earth metal oxides(TiO2, Fe2O3, etc). The mineral compositions of fireclay bricks are: mullite, cristobalite, quartz and glass phase.

The refractoriness of clay bricks is usually between 1580~1750℃, the higher Al2O3/SiO2 ratio, the higher the refractoriness. When there are more low melting point impurities, the refractoriness of the products significantly decreases.

The refractoriness under load temperature of fireclay brick is about 1250~1450℃, the variation range is very large. Deformation beginning temperature is relatively low, temperature difference between 40% deformation is about 200~250℃.

Clay brick has very low thermal expansion rate, 20~1000℃ average linear expansion rate is 4.5~6*10-6 /℃. Chamotte brick also has relatively low thermal conductivity.

Clay brick has good thermal shock resistance, but the fluctuation scope is very large. 1100℃ water cooling recycling tests is usually higher than 10 times, that’s because clay bricks have low thermal expansion coefficient, there is no significant crystal transfer at high temperature, and have plasticity at high temperature.

Chemical corrosion resistance. clay brick is weak acid refractory, it has good acid slag corrosion resistance, but weak resistance to basic material corrosion.

The Applications of Clay Bricks

Clay bricks has relatively good acid slag corrosion resistance, so they are suitable for the masonry of acidic kiln working lining. Since the chemical composition and mineral phases of clay bricks varies significantly, their high temperature performance differs greatly, so as their application.

Glass Kiln clay blocks

Glass kiln large scale clay bricks are clay blocks used to mason glass kiln, unit weight is no less than 50 kg.

Glass kiln large scale clay bricks physicochemical index

Item	GCB-40a	GCB-40b
Al2O3% ≥	40	40
Fe2O3 % ≤	1.5	1.8
RUL 0.2 Mpa ℃ ≥	1450	1400
Reheating linear change(1400℃, 2h)	0~-0.4	0~-0.4
Apparent porosity%	≤18	≤18
Cold compression strength Mpa ≥	49	34.3

Clay bricks used in blast furnace should have high cold crushing strength and endure the abrasion of material loading, have small volume shrinkage under long term high temperature working condition, low apparent porosity, low Fe2O3 content, etc.

Blast Furnace Clay Bricks Physicochemical Index

Item	BZCB-42	BCB-42
Al2O3% ≥	42	42
Fe2O3 % ≤	1.7	1.7
Refractoriness ℃	1750~1770	1750~1770
RUL 0.2 Mpa ℃ ≥	1450	1430
Reheating linear change(1450℃, 3h)	0~-2	0~-3
Apparent porosity%	≤15	≤16
Cold compression strength Mpa ≥	58.8	49.0

Hot Blast Furnace Clay Bricks

Hot blast furnace clay bricks should have good thermal shock resistance, high rupture under load temperature, low creep. Hot blast furnace clay bricks are mainly used in regenerator chamber, partition wall and so on.

Hot blast furnace clay bricks physicochemical index

Item	HCB-42	HCB-40	HCB-36
Al2O3% ≥	42	40	36
Refractoriness ℃	1750~1770	1730~1750	1690~1710
RUL 0.2 Mpa ℃ ≥	1400	1350	1300
Reheating linear change	(1450℃, 3h)0~-0.4	(1350℃, 3h)0~-0.3	(1350℃, 3h)0~-0.5
Apparent porosity%	≤24	≤24	≤25
Cold compression strength Mpa ≥	29.4	24.5	19.6