Description

Introduction high alumina refractory castable

Osaka high alumina refractory castable lines furnaces that run at extreme heat. It contains over 70% alumina and resists temperatures up to 1700°C. You mix the powder with clean water and cast it into any shape. Moreover, the cured lining withstands abrasion, slag and thermal shock. The mix sets hard and keeps strength after repeated heating. Masons trowel, pour or pump it into walls, roofs and burner blocks. Furnace operators in Bangladesh choose it for kilns, boilers and heat treatment units. Furthermore, the seamless lining has no joints that leak heat. Astzbd supplies genuine Osaka castable with clear specifications. In addition, our team helps you pick the right grade for your furnace.

Technical Specifications high alumina refractory castable price in Bangladesh

Specification	Detail
Brand	Osaka
Model	OSK-HAC-70
Product Type	High alumina refractory castable (dry mix, hydraulic setting)
Country of Origin	India
Packing	25 kg moisture-proof bag
Al₂O₃ Content	≥ 70%
Fe₂O₃ Content	≤ 2.0%
Maximum Service Temperature	1700°C
Maximum Grain Size	5 mm
Bulk Density (110°C × 24 h)	2.65-2.75 g/cm³
Cold Crushing Strength (110°C × 24 h)	≥ 60 MPa
Cold Crushing Strength (1100°C × 3 h)	≥ 70 MPa
Permanent Linear Change (1500°C × 3 h)	± 0.5%
Water Addition	8-10% by weight
Installation Method	Casting, vibrating, troweling
Shelf Life	6 months in dry storage
Color	Grey

 

Key Features refractory castable cement

1. The ≥ 70% alumina content resists heat up to 1700°C.
2. Moreover, the dense cured body resists slag, abrasion and chemical attack.
3. High cold crushing strength carries heavy loads in furnace walls and roofs.
4. The seamless lining removes joints and blocks heat leaks.
5. You cast it into any shape, so it fits burner blocks, doors and curved walls.
6. As a result, the lining lasts longer and needs fewer repairs.

Who Uses This Osaka refractory castable

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

Applications furnace lining castable

1. Furnace wall, roof and hearth lining
2. Kiln roofs, doors and kiln cars
3. Boiler and incinerator linings
4. Burner blocks and tap holes
5. Ladle and launder working linings
6. Heat treatment and annealing furnaces
7. Repair of damaged brick linings

Frequently Asked Questions / FAQ high alumina refractory castable

Q1. What is a high alumina refractory castable?
It is a dry refractory mix with a high alumina content. You add water, cast it into shape and let it cure into a hard, heat-resistant lining.

Q2. What temperature can this castable handle?
It resists heat up to 1700°C. However, the furnace atmosphere and load affect the safe working temperature, so check your conditions first.

Q3. How much water should I add?
Add 8-10% clean water by weight and mix until the material flows evenly. Too much water weakens the final strength.

Q4. How do I dry and heat the new lining?
Cure the lining for 24 hours, then raise the temperature slowly. A gradual heat-up drives out moisture without cracking the castable.

Q5. How can I buy it 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 refractory castable price in Bangladesh

1. We supply genuine Osaka castable with clear model and packing details.
2. We offer competitive prices for small and bulk orders.
3. We pack each bag securely, so the powder arrives dry and intact.
4. We deliver quickly across Bangladesh.
5. Our team advises you on grade, water ratio and installation.