Alkali Resistant Firebrick for Cement Kiln & Industrial Furnace

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High-Performance Alkali-Resistant Firebricks

Product Introduction：

Product Overview（产品简介）Alkali Resistant Firebrick is specially designed for high-temperature industrial furnaces exposed to alkali vapor corrosion such as sodium (Na₂O) and potassium (K₂O).It is manufactured from high-quality flint clay, alumina and silica materials. During high-temperature firing, the brick forms a dense protective layer that effectively prevents alkali penetration, significantly extending furnace lining life.This product is widely used in cement kilns, glass furnaces, and chemical thermal equipment.Key Features（核心优势）1. Excellent Alkali ResistanceForms a protective glassy layer under high temperature, resisting chemical corrosion from alkali gases.2. High Strength & DurabilityCold crushing strength up to 30–60 MPa, suitable for heavy industrial load environments.3. Strong Thermal Shock ResistanceStable performance under rapid heating and cooling cycles, reducing cracking and spalling.Product Specifications（技术参数）ItemPNJ-1PNJ-2GNJAl₂O₃ (%)25–4025–4025–40Fe₂O₃ (%)≤2.0≤2.0≤2.0Apparent Porosity (%)≤21≤20≤19Cold Crushing Strength (MPa)≥30≥40≥60Thermal Shock Resistance (times)≥10≥10≥25Refractoriness Under Load (°C)≥1300≥1350≥1250Alkali ResistanceGrade 1Grade 1Grade 1Applications（应用领域）Cement rotary kiln (cement industry)Preheater and decomposition systemGlass furnace regeneratorMetallurgical furnace liningChemical incineration systemWhy Choose Us（为什么选择我们）Factory direct supply, competitive priceStable quality control systemOEM & customized production availableExport experience for global marketsTechnical support for kiln lining design

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PRODUCT DETAILS

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Product Overview（产品简介）

Alkali Resistant Firebrick is specially designed for high-temperature industrial furnaces exposed to alkali vapor corrosion such as sodium (Na₂O) and potassium (K₂O).

It is manufactured from high-quality flint clay, alumina and silica materials. During high-temperature firing, the brick forms a dense protective layer that effectively prevents alkali penetration, significantly extending furnace lining life.

This product is widely used in cement kilns, glass furnaces, and chemical thermal equipment.

Key Features（核心优势）

1. Excellent Alkali Resistance

Forms a protective glassy layer under high temperature, resisting chemical corrosion from alkali gases.

2. High Strength & Durability

Cold crushing strength up to 30–60 MPa, suitable for heavy industrial load environments.

3. Strong Thermal Shock Resistance

Stable performance under rapid heating and cooling cycles, reducing cracking and spalling.

Product Specifications（技术参数）

Item	PNJ-1	PNJ-2	GNJ
Al₂O₃ (%)	25–40	25–40	25–40
Fe₂O₃ (%)	≤2.0	≤2.0	≤2.0
Apparent Porosity (%)	≤21	≤20	≤19
Cold Crushing Strength (MPa)	≥30	≥40	≥60
Thermal Shock Resistance (times)	≥10	≥10	≥25
Refractoriness Under Load (°C)	≥1300	≥1350	≥1250
Alkali Resistance	Grade 1	Grade 1	Grade 1

Applications（应用领域）

Cement rotary kiln (cement industry)
Preheater and decomposition system
Glass furnace regenerator
Metallurgical furnace lining
Chemical incineration system

Why Choose Us（为什么选择我们）

Factory direct supply, competitive price
Stable quality control system
OEM & customized production available
Export experience for global markets
Technical support for kiln lining design

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High-Performance Alkali-Resistant Firebricks

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Product Overview（产品简介）

Key Features（核心优势）

1. Excellent Alkali Resistance

2. High Strength & Durability

3. Strong Thermal Shock Resistance

Product Specifications（技术参数）

Applications（应用领域）

Why Choose Us（为什么选择我们）