High strength alkali resistant brick

Product

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Home > Refractory brick> High strength alkali resistant brick

High strength alkali resistant brick

High strength alkali resistant brick is a new type brick made by alkali-resistant clay or semi-siliceous refractory material. Under certain temperature, alkali from kiln gas and bedding will congeal on the brick surface and produce chemical reaction with it to form high viscosity enamel layer which enclose the alkali erosion paths or routes.

Other name: entrance brick

Model Number: PK-O, PK-H, PK-A, CB-20, CB-30

Certification: ISO9001-14001

Minimum Order Quantity: 5 MT

High strength alkali resistant brick

Introduction
High strength alkali resistant brick is a new type brick made by alkali-resistant clay or semi-siliceous refractory material. Under certain temperature, alkali from kiln gas and bedding will congeal on the brick surface and produce chemical reaction with it to form high viscosity enamel layer which enclose the alkali erosion paths or routes. This kind of brick usually have four kinds: alkali resistant brick, high strength alkali resistant brick, arch alkali resistant brick and insulation type alkali resistant brick.

Characteristic
1.Excellent alkali resistance
2.High strength
3.High refractoriness

Physical & Chemical Index

Item	PK-O	PK-H	PK-A	CB-20	CB-30
Item	Common type alkali-resistant bricks	High strength type alkali-resistance bricks	Arch type alkali-resistant bricks	Insulation type alkali-resistance bricks
Al₂O₃ (%)	25-35	25-35	25-35	20-30	20-30
SiO2 (%)	60-70	60-70	60-65	60-67	60-67
Apparent Porosity (% )	25	20	25	30	30
Cold Crushing Strength Mpa	25	60	30	15	20
Refractoriness under load of 0.2 Mpa (℃)	1350	1300	1400	1200	1200
Thermal Shock Resistance(1100℃,water quenching cycle)	10	5	10	5	-
(350℃)W/mk Thermal Conductivity	1.3	1.4	1.3	0.75	0.75
(900℃)% Thermal Expansion Rate	0.7	-	-	0.6	-

Application
High strength alkali resistant brick can be used cement rotary kiln front/rear port, cooling machine, transition zone, burning zone and kiln lining, etc.

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