Refractory Insulation Bricks for Chemical Furnace Lining
Product Overview
Our refractory insulation bricks for chemical furnace lining are engineered to endure the aggressive environments of modern petro‑chemical, polymer, and specialty‑chemical processing plants. Built from high‑purity alumina‑silica matrices with carefully selected binders, these bricks provide superior thermal insulation while resisting corrosive gases, molten salts, and cyclic temperature swings. The product is supplied in standard modules that can be cut, drilled, or shaped on‑site, allowing seamless integration into existing furnace designs or new installations.
Technical Specifications
Typical performance data are presented below; all dimensions, densities, and additives can be customized to meet specific process requirements.
| Parameter | Typical Range | Unit |
|---|---|---|
| Bulk Density | 1.45 – 1.70 | g/cm³ |
| Thermal Conductivity | 0.45 – 0.60 | W/(m·K) |
| Maximum Service Temp. | 1150 – 1350 | °C |
| Cold Crush Strength | 15 – 20 | MPa |
| Corrosion Resistance | Excellent vs. H₂S, SO₂, HF | – |
All bricks are pre‑tested for dimensional stability after 500 h of continuous operation at 1200 °C, ensuring consistent performance throughout the furnace’s duty cycle.
Application Scenarios
- High‑temperature oxidation reactors where temperature uniformity reduces hot‑spot formation.
- Sulfuric acid and hydrogen fluoride vapor generators that demand aggressive‑chemical resistance.
- Polymer cracking furnaces operating under rapid heating/cooling cycles, benefitting from low thermal conductivity.
- Batch‑type chemical synthesis kilns where modular brick geometry simplifies maintenance and part replacement.
By selecting the appropriate grade of refractory insulation bricks, plant engineers can achieve up to 30 % energy savings compared with conventional dense firebrick, while extending lining life beyond 2 years under continuous service.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for custom‑size bricks?
We accept orders starting from 500 kg of finished product. For larger projects, volume discounts and dedicated production lines are available.
Can the composition be altered to improve resistance to a specific chemical?
Yes. Our R&D team can adjust the silica‑alumina ratio, add zirconia or magnesia, or incorporate specialty binders to target resistance against HF, HCl, or chlorine‑based atmospheres.
What is the typical lead time from order confirmation?
Standard grades ship within 15–30 days. Custom formulations require 30–45 days, depending on the complexity of the specification.
Do the bricks comply with international safety standards?
All products meet or exceed ISO 9001 quality management requirements and are tested according to ASTM C-617 for refractory insulating materials. Certifications can be provided on request.
Ready to boost furnace efficiency and prolong lining life?
Contact Our Engineering Team Today