Product Overview:
Our LDSHA Series High Alumina Castable represents a step-change in performance over conventional dense castables. Engineered for applications where temperature, abrasion, and structural load are paramount, it is formulated with premium aggregates like high-quality bauxite, mullite, andalusite, or corundum. Combined with silica powder, α-alumina micro-powder, and specialized additives, this castable delivers exceptional hot strength and corrosion resistance, making it the superior choice for the most demanding thermal containment challenges.
Technical data
| Item |
LDSHA75 |
LDSHA80 |
LDSHA85 |
LDSHA95 |
| Service Temp ℃ |
1600 |
1650 |
1700 |
1750 |
Bulk Density (g/cm3)
(Dried at 110℃) |
2.5 |
2.6 |
2.7 |
3.0 |
CCS 110℃
(Mpa) 1100℃
1500 ℃ |
65
55
80 |
70
60
85 |
90
80
100 |
95
85
110 |
MOR 110℃
(Mpa) 1100℃
1500℃ |
10
9
11 |
11
9
12 |
12
10
13 |
13
12
15 |
| Max Grain Size (mm) |
6 |
6 |
6 |
6 |
Chemical Analysis(%)
Al2O3
Fe2O3 |
75
2.5 |
80
2.0 |
85
1.8 |
95
1.2 |
Application Guidelines
Mixer
Placement
Water/Mixer Temp℃
Mixing Time(Min):Dry/Wet |
P
V/T
20±5
2/5 |
P
V/T
20±5
2/5 |
P
V/T
20±5
2/5 |
P
V/T
20±5
2/5 |
| Water % (Typical) |
7-9 |
7-9 |
6-8 |
6-7 |
Superior Performance Advantages:
- Exceptional High-Temperature Stability: Formulated to maintain structural integrity and strength under continuous exposure to ultra-high temperatures.
- Outstanding Abrasion & Erosion Resistance: Withstands the severe wear from solid charge materials, slag, and high-velocity gases, significantly extending campaign life.
- Enhanced Mechanical Strength: Exhibits higher cold crushing strength (CCS) across all temperature ranges compared to standard castables, providing robust load-bearing capability.
- Improved Corrosion Resistance: Offers better defense against chemical attack from slags and fluxes in aggressive melting and processing environments.
- Engineered for Critical Applications: Specifically designed to outperform where conventional castables reach their limits.
Targeted High-Performance Applications:
This castable is ideally specified for lining and repairing critical high-wear, high-temperature zones in:
- Waste & Biomass Incineration: Primary chambers, slagging zones, and cyclone areas.
- Non-Ferrous Metal Processing: Aluminum holding & melting furnaces, copper refining vessels.
- Cement & Lime Industry: High-temperature zones of rotary kilns, preheater cyclones.
- Steel Industry: Ladles, tundishes, induction furnace linings, and other secondary steelmaking vessels.
- Petrochemical: High-temperature reformers and cracking units.
The Definitive Choice for Demanding Thermal Processes:
When process intensity elevates the demands on refractory linings, our High Alumina Castable provides the necessary margin of safety and longevity. Its optimized formulation ensures not just survival but reliable performance, reducing unscheduled downtime and total cost of ownership in your most critical thermal assets.
