High-strength alkali-resistant bricks

High-strength alkali-resistant bricks

High-strength alkali-resistant bricks are made from low-alumina refractory clay. High temperature crystalline phases in their microstructure increase the chemical corrosion resistance and reduce the penetration and deposition of alkaline volatiles and detrimental components. It is used in preheating zones of CRK.

Composition:Al₂O₃ 25-35%

Refractoriness:≥1650℃

Available industries:cement industry

Features: excellent chemical corrosion resistance excellent thermal shock resistance

Introduction

☆ High-strength alkali-resistant bricks are refractory bricks made on the basis of ordinary types by adding silica, coke gemstones and appropriate additives to increase the compressive strength; high-strength alkali-resistant bricks have high strength, stable volume, penetration resistance, and Good alkali erosion and other characteristics; high-strength alkali-resistant bricks are mainly used in cement kiln preheaters, calciners, tertiary air ducts and other parts.

☆ Alkali-resistance brick is a kind of low alumina brick, the Al₂O₃ content is 35-25%, the main material is low alumina refractory clay, it is a kind of silica-alumina series refractory products with good alkali erosion resistance performance in cement kiln system.

Features

Excellent chemical corrosion resistance
Excellent thermal shock resistance
High strength
Stable volume

Physical & Chemical indicators

Brand		RK-O	RK-H	RK-A	CB-20
Chemical Composition wt%	Al₂O₃	25-30	25-30	30-35	25-30
	SiO₂	60-67	65-70	60-65	60-67
	Fe₂O₃	≤2.0	≤2.1	≤2.2	≤2.0
Apparent Porosity, %		≤25	≤20	≤25	≥30
Refractoriness,℃		≥1650	≥1650	≥1700	≥1650
Linear change reheating at 1350℃×2h, %		0.1%~-1.0%	——	——	——
Refractoriness under Load, ℃ (0.2MPa, t0.6)		≥1350	≥1200	≥1400	≥1250
Thermal Conductivity (1000℃）, W/m·K		≤1.28	≤1.28	≤1.28	≤0.7
Thcrmal Shock Test,Cycle (1100℃，water quenching）		≥10	≥25	≥10	≥5

Application area

High-strength alkali-resistant bricks
Apply to preheater, calciner, tertiary air ducts.

Suppliers

ZHENJIN REFRACTORIES is a professional magnesia-alumina spinel bricks supplier. After 38 years' of hardworking and development, it has bacome a comprehensive enterprise producing refractory materials in cement, nonferrous, steel, lime, building materials and metallurgical industries.

The company actively responds to the requirements of global green development, and continues to develop and apply energy-saving, environmentally friendly, functional and efficient refractory materials. Introduce desulfurization and denitrification equipment, adhere to green development, adopt automated production, and realize intelligent manufacturing.

Why Choose Us?

1. Unique location. ZHENJIN REFRACTORIES is located in the refractory capital of China. It is a place rich in high-quality materals, which provides reasonable conditions for the production of refractory materials.

2. 38 years of deep cultivation in the refractory industry. ZHENJIN REFRACTORIES has sufficient raw material, advanced equipment, and mature production technology.

3. Green intelligent production. The company pays attention to green development, introduces desulfurization and denitrification equipment, adheres to green production and kiln transformation, and realizes energy saving and consumption reduction.

4. Strict quality control. The whole line adopts automatic production, automatic batching, molding and sintering to ensure the stable quality of each brick.

5. Packaging and delivery. Wooden pallets with plastic film or according to customer's request, strong packing protects the goods from any possible damage during transit.