Fire Clay Brick

1.Good resistance to corrosion and abrasion,
2.Perfect thermal shock resistance,
3.Good spalling resistance,
4.High mechanical strength,
5.Good volume stability under high temperature,
6.Excellent thermal performance, and acid resistance.

Brief Introduction

Fire clay brick is made from clinker clay by mixing, forming, drying, sintering and matching characterized by good resistance to corrosion and abrasion, good thermal shock resistance, good spelling resistance, high mechanical strength, good volume stability under high temperature.

Application

Low porosity clay bricks can be applied to steel, nonferrous metals, glass, cement, ceramics, pertrifaction, machinery, boiler, light industry, electric power, war industry and other economic filed, which is the indispensable basic material to ensure above production running and technological development, it plays an incomparable important role in the development of high temperature industrial production.

Classification

Alumina content in fireclay bricks approximate 28-45% are classified to Low Duty Fireclay Bricks, Medium Duty Fireclay Bricks, High Duty Fireclay Bricks and Super Duty Fireclay Bricks, the detailed information are as below.

Low Duty Fire Clay Bricks

Content: 60%-70% SiO2, 23%-33% Al₂O_3, 6%-10% Other Content
Working Temperature: 1500 °C – 1590 °C.
Application: mainly used for fireplace, chimneys, and also used as back up bricks

Medium Duty Fireclay Bricks

Content: 60%-70% SiO2, 26%-36% Al₂O_3, 5%-9% Other Content
Working Temperature: 1630 °C – 1690 °C.
Application: mainly used as backup linings, and also for lower-temperature ceramic kilns and chimneys

High Duty Fireclay Bricks

Content: 55%-60% SiO2, 35%-40% Al₂O_3, 5%-9% Other Content
Working Temperature: 1690 °C – 1740 °C.
Application: Widely used for boilers, ceramic kilns, chimneys and back-up linings

Super Duty Fireclay Bricks

Content: 49%-53% SiO2, 40%-44% Al₂O_3, 5%-7% Other Content
Working Temperature: 1740 °C – 1760 °C.
Property: good strength, refractoriness, volume stability at high temperatures, superior resistance to cracking or spalling during rapid changes of temperature

Technical Datas

ITME	SK 31	SK 30	SK 30	SK 29	SK 29	SK 28	SK 27
CHINA CODE	N-1	N-2a	N-2b	N-3a	N-3b	N-4	N-5
Refractoriness ℃	1750	1730	1730	1710	1710	1690	1670
Al2O3 %	40	39	34	34	32	32	31
Fe2O3 %	2.1	2.1	2.3	2.3	2.5	2.5	2.5
Apparent Porosity％	22	24	26	24	26	24	26
Bulk Density g/cm3	2.15	2.1	2.1	2.05	2.05	2.05	2
Cold Crushing Strength Mpa	30	25	20	20	15	20	15
0.2Mpa Refractoriness Under Load T0.6 ℃ ≥	1400	1350	1350	1320	1320	1300	1300
Reheating Linear Change 1400℃	0.1–0.4	0.1–0.5	0.2–0.5
Reheating Linear Change 1350℃				0.2–0.5	0.2–0.5	0.2–0.5	0.2-0

Note: Any Interests and questions, please email us for more information and quotation: inquiry@rsrefractorygroup.com

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