Category · SiO₂ 92 – 95% · Max 1650 °C
Acid-Resistant Refractory Bricks — Exporter from India
Acid-resistant refractory bricks are engineered to withstand acidic chemical attack — sulphuric, hydrochloric, phosphoric and organic acid exposure — at moderate to high temperatures. The category includes high-silica acid-resistant bricks (SiO₂ ≥ 95%), acid-proof tiles and pavers for floor and lining duty, zircon bricks (ZrSiO₄) for high-temperature acidic service, and silicon-carbide (SiC) bricks where abrasion and thermal-shock resistance combine with acid resistance. Typical service temperatures range from ambient (acid-proof tiles in plant flooring) up to 1650 °C (SiC bricks in burner blocks). firebrickssource.com supplies the full range to chemical process plants, flue-gas desulphurisation (FGD) systems, FCC reactors and aggregate-handling industries, exported from Rajkot, Gujarat to industrial buyers worldwide.
Variants in stock
Grades of acid-resistant refractory bricks
High-Silica Acid-Resistant Bricks
SiO₂ ≥ 95% — sulphuric acid plants, FGD towers and chemical reactor linings.
Acid-Proof Tiles & Pavers
Class I & II tiles for chemical-plant floors, battery rooms and pickling lines.
Zircon Bricks
ZrO₂ ≥ 33% — glass furnace flux line, throat and tundish nozzles.
Silicon Carbide (SiC) Bricks
Abrasion + thermal-shock + acid resistance — aluminium, copper, blast-furnace bosh.
Properties overview
Acid-resistant grades compared
| Grade | Key chemistry | Max temp °C | Bulk density g/cm³ | Acid resistance | Typical application |
|---|---|---|---|---|---|
| High-Silica AR | SiO₂ ≥ 95% | 1400 | ≥ 2.20 | ≥ 98% | Sulphuric acid plant, FGD |
| Acid-Proof Tile I | SiO₂ ≥ 92% | 200 | ≥ 2.30 | ≥ 96% | Floors, pickling, battery rooms |
| Acid-Proof Tile II | SiO₂ ≥ 92% | 200 | ≥ 2.20 | ≥ 96% | General industrial flooring |
| Zircon | ZrSiO₄ ≥ 60% | 1750 | ≥ 3.20 | High (alkali too) | Glass flux line, tundish nozzle |
| Silicon Carbide | SiC 85 – 95% | 1650 | ≥ 2.55 | High | Aluminium, blast-furnace bosh |
*Typical certified values — actual batch values issued on the per-shipment test certificate. Values aligned with IS 1528 / ASTM C-series / EN 993 test methods.*
Applications
Where acid-resistant refractories are used
Chemical Plants
Reactor linings, mixing vessels, acid storage tanks.
Sulphuric Acid
Absorption towers, drying towers, acid coolers.
FGD & Power
Flue-gas desulphurisation towers, scrubber linings.
FCC & Refineries
Catalytic-cracker reactor cones, regenerators.
Fertiliser
Phosphoric acid digesters, ammonia carbamate lines.
Plant Flooring
Battery rooms, electroplating bays, pickling shops.
Datasheet
Download acid-resistant datasheet
Full property table for all acid-resistant refractory grades — chemistry, porosity, acid resistance %, abrasion loss, dimensional tolerances.
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