05 / 08

Coke oven refractories

Precast door-lining blocks made from synthetic raw materials, designed for low porosity and expansion, thermal-shock stability and fast replacement compared with conventional brick linings.

Long precast door-lining block resting on a coke oven door frame at the battery

05.01

Coke oven door refractories

Large precast door-lining blocks made from synthetic refractory materials and additives. Features include low porosity and expansion, thermal-shock stability, abrasion and erosion resistance, and convenient installation and maintenance.

Coke oven door bricks
Property	Precast oven-door brick	Glazed oven-door brick
Al₂O₃ (%)	≥50	≥50
Bulk density (g/cm³)110°C × 24h	≥2.1	≥2.15
Cold crushing strength (MPa)110°C × 24h	≥50	≥50
Cold crushing strength (MPa)1200°C × 3h	≥70	≥70
Modulus of rupture (MPa)110°C × 24h	≥5.5	≥5.5
Modulus of rupture (MPa)1200°C × 3h	≥4.5	≥4.5
Permanent linear change (%)1000°C	≤0.5	≤0.5
Glaze thickness (mm)	—	1

Typical values from the product data sheets. Properties for a specific order are confirmed in the quotation.

Ask about this product

05.02

Precast door-lining comparison

The catalog compares precast door bricks with standard-size brick linings in service life, energy conservation, leakage control and installation. Listed service-life figures are 5 years for precast bricks and 1-1.5 years for standard bricks.

Precast door bricks vs. standard-size brick linings
Property	Performance	Benefits
Long service life	Large precast door bricks: service life 5 years. Small standard-size refractory bricks: service life 1–1.5 years.	Fewer repairs, higher coke-oven utilisation, lower labour and material costs, longer service life.
Energy saving	Oven-door surface temperature is 50°C or more lower than with small standard-size refractory bricks.	Higher coke-end temperature, shorter carbonisation time and longer life of the door steel structure.
Environmental protection	No emission of coke smoke and dust; no tar seepage through the one-piece precast door lining.	Solves long-standing smoke, dust and gas-leakage problems; extends door life and reduces maintenance and repair.
Fast installation	Very simple installation allowing rapid replacement; carbon deposits are easy to clean during maintenance, saving labour and time.	Lower maintenance workload; carbonisation efficiency greatly improved.

Typical values from the product data sheets. Properties for a specific order are confirmed in the quotation.

Ask about this product

Other product groups

Need a quotation or a data sheet?

Send us the product name, grade or a short description of the application. We reply by email, phone or WhatsApp.

Send an inquiry Call +86 132 6040 2428