Low-Porosity Fireclay Bricks

Low porosity fireclay bricks feature a dense structure, low porosity, high cold crushing strength, excellent resistance to acid and slag corrosion, high refractoriness under load, and good thermal shock resistance at low and medium temperatures. They are widely used in petrochemical cracking furnaces, steelmaking metallurgical vessels, and regenerators of glass melting furnaces.

Send Message

Physical and Chemical Indicators

Item	ZMN-45	ZMN-42	ZMN-42L	ZMN-40
Al₂O₃ (%)	≥ 45	≥ 42	≥ 42	≥ 42
Fe₂O₃ (%)	≤ 1.2	≤ 1.5	≤ 1.8	≤ 1.7
P₂O₅ (%)	/	/	≥ 5	/
Apparent Porosity (%)	≤ 12	≤ 15	≤ 14	≤ 17
Cold Crushing Strength (MPa)	≥ 80	≥ 70	≥ 70	≥ 55
Refractoriness Under Load (0.2MPa, ℃)	≥ 1500	≥ 1460	≥ 1450	≥ 1420
Permanent Linear Change (%)	-0.2~0.1 (1450℃×3h)	-0.2~0.1 (1450℃×3h)	-0.2~0.1 (1450℃×3h)	-0.4~0 (1400℃×2h)

Low Creep Fireclay Bricks

Low creep fireclay bricks are characterized by good volume stability at medium and high temperatures, excellent high-temperature creep resistance, superior corrosion resistance, and strong thermal shock resistance.

Send Message

Physical and Chemical Indicators

Item	DRN-128	DRN-125	DRN-120	DRN-115
Al₂O₃ (%)	≥ 45	≥ 45	≥ 42	≥ 40
Fe₂O₃ (%)	≤ 1.5	≤ 1.5	≤ 1.8	≤ 1.9
Apparent Porosity (%)	≤ 15	≤ 20	≤ 20	≤ 22
Cold Crushing Strength (MPa)	≥ 60	≥ 45	≥ 35	≥ 35
Creep Rate (0.2MPa, %)	≤ 0.25 (1280℃×25h)	≤ 0.8 (1250℃×50h)	≤ 0.8 (1200℃×50h)	≤ 0.8 (1150℃×50h)
Permanent Linear Change (%)	-0.3~0.1 (1400℃×2h)	-0.4~0.1 (1350℃×2h)	-0.4~0.1 (1300℃×2h)	-0.4~0.1 (1300℃×2h)

Related Products

Fireclay Bricks

Low-Porosity Fireclay Bricks are characterized by a dense structure, low apparent porosity, and high cold crushing strength.

High Alumina Bricks

High alumina bricks are neutral refractory materials with a certain degree of corrosion resistance to both acidic and alkaline slags.

Phosphate-Bonded High Alumina Bricks

Based on their characteristics, phosphate-bonded high alumina bricks are mainly classified into phosphate-bonded high alumina bricks, phosphate-bonded wear-resistant bricks, and special phosphate bricks.

Mullite Bricks

Mullite bricks possess excellent high-temperature performance, high strength, high refractoriness under load, superior thermal shock resistance, and good chemical stability. They exhibit good corrosion resistance against acidic and low-alkaline slags.

Corundum Bricks

Corundum bricks feature high refractoriness under load and excellent chemical stability. They have strong resistance to acidic or alkaline slags, liquid metals, and molten glass, along with a dense structure.