Description

Introduction high alumina fire bricks

SRL MD high alumina fire bricks protect furnaces from extreme heat. They contain over 70% alumina, so they resist temperatures up to 1790°C. Each brick has a dense body that withstands abrasion and slag attack. Moreover, the standard size lets masons build tight walls quickly. The bricks keep their shape under heavy loads and repeated heating. The brick handles sudden temperature changes without cracking. Masons lay it easily with fireclay mortar. Furnace operators in Bangladesh choose them for kilns, boilers and heat treatment units. Furthermore, low porosity blocks gas and molten material from entering the lining. Astzbd supplies genuine SRL MD bricks with clear specifications. In addition, our team helps you match the brick grade to your furnace.

Technical Specifications high alumina fire bricks price in Bangladesh

Specification	Detail
Brand	SRL
Model	SRL MD
Product Type	High alumina fire brick (shaped, fired)
Country of Origin	India
Size	230 mm (L) × 114 mm (W) × 65 mm (T)
Approx. Weight	4.0 kg per brick
Al₂O₃ Content	≥ 70%
Fe₂O₃ Content	≤ 2.0%
Refractoriness	≥ 1790°C
Refractoriness Under Load (0.2 MPa)	≥ 1450°C
Bulk Density	2.30-2.40 g/cm³
Apparent Porosity	≤ 22%
Cold Crushing Strength	≥ 60 MPa
Permanent Linear Change	≤ 0.4% (1500°C × 2 h)
Thermal Shock Resistance	Good
Color	Light yellow to grey
Packing	Palletized with strapping

 

Key Features refractory fire bricks

1. The ≥ 70% alumina content resists heat up to 1790°C.
2. Moreover, the dense body resists slag, abrasion and chemical attack.
3. High cold crushing strength carries heavy loads in furnace walls.
4. Low porosity blocks molten metal and hot gas.
5. The standard size fits tightly and speeds up bricklaying.
6. As a result, the lining lasts longer and needs fewer repairs.

Who Uses This SRL MD fire bricks

1. Furnace operators line melting and reheating furnaces.
2. Kiln owners in brick, ceramic and lime plants build kiln walls and crowns.
3. Boiler technicians repair combustion chambers and burner blocks.
4. Foundry and steel plant maintenance teams reline ladles and holding furnaces.
5. Contractors and fabricators build ovens, incinerators and chimneys. Consequently, they finish refractory jobs on schedule.

Applications furnace lining bricks

1. Furnace wall, roof and hearth lining
2. Kiln walls, crowns and kiln cars
3. Boiler and incinerator linings
4. Ladle and tundish working linings
5. Hot blast stove and chimney lining
6. Heat treatment and annealing furnaces
7. Industrial oven and pizza oven construction

Frequently Asked Questions / FAQ high alumina fire bricks

Q1. What are high alumina fire bricks?
They are fired refractory bricks with more than 45% alumina. This brand contains 70% or more, so the bricks handle higher temperatures than standard fireclay bricks.

Q2. What temperature can these bricks handle?
They resist heat up to 1790°C. However, you should check the load and atmosphere of your furnace because they affect the safe working temperature.

Q3. Which mortar should I use?
Use high alumina refractory mortar or fireclay mortar. Keep the joints thin to maximize strength and heat resistance.

Q4. Can I use them in a wood-fired or pizza oven?
Yes. They withstand repeated heating and cooling, so many builders use them for oven floors and domes.

Q5. How can I buy them in Bangladesh?
Add the quantity to your cart on astzbd, and we deliver across Bangladesh. The price depends on the order size, so contact us for the latest bulk quote.

Why Buy From astzbd high alumina fire bricks price in Bangladesh

1. We supply genuine SRL MD bricks with clear model and size details.
2. We offer competitive prices for small and bulk orders.
3. We pack each pallet securely, so bricks arrive intact.
4. We deliver quickly across Bangladesh.
5. Our team advises you on grade, quantity and installation.