Alumina Bubble Brick

Name: Alumina Bubble Brick - China Loong Refractory Co., Ltd.
SKU: Shape-Refractory-41

Alumina Bubble Brick is a brick made of alumina hollow spheres as the main raw material, high-performance alumina ultrafine powder as an additive, organic materials as a binder, and dried and formed. It has low thermal conductivity, thermal insulation and high compressive strength, and can work at the maximum temperature below 1800℃. Alumina foam brick has excellent heat resistance and heat insulation performance, and can be directly used as the working lining of high temperature kiln. It is mainly used in metallurgy, refractory materials, ceramics, petrochemicals and other fields, and can be

Composition: Premium materials such as high alumina oxide, magnesium oxide, and silicon carbide, with customizable composition based on client requirements.

Form: Available in powder, brick, board, and castable forms to suit various application needs.

Refractoriness: Standard range from 1200°C to 1800°C, with options for higher temperature customization.

Application Fields: Widely used in industries such as steel, cement, glass, and petrochemicals for furnace lining and insulation.

Packaging: Options include 25 kg bags, bulk bags, and custom packaging solutions compliant with global transportation standards.

Message

Introduction

Welcome to China Loong Refractory Co., Ltd.! We are dedicated to providing high-quality refractory materials suitable for various demanding high-temperature industrial environments. As a professional manufacturer of refractory products, we not only offer standard specifications but also provide OEM customization services tailored to meet specific customer requirements. Whether it's high alumina bricks, silicon carbide bricks, castables, refractory fiber boards, or special refractory materials for high-temperature kilns, we offer a wide range of options.

Our experienced R&D team can customize the material, form, and size according to your specific application needs while ensuring compliance with international quality standards. With rigorous quality control and advanced production facilities, we guarantee products with high refractoriness, excellent compressive strength, and long-lasting durability. Whether you are in the steel, cement, glass, or petrochemical industry, we are your trusted partner, supporting the success of your projects.

For customization inquiries, please feel free to contact us. We will provide tailor-made solutions based on your requirements.

Alumina Bubble Brick Details

Features

1. High working temperature:

Alumina Bubble Brick can reach more than 1750 degrees and has good thermal stability. The change rate of the reignition line is small, and the use time is longer.

2. Optimize the structure and reduce the weight of the furnace body

3. Save material

4. Energy saving:

This Brick has obvious thermal insulation characteristics, low thermal conductivity, can play a very good thermal insulation effect, reduce heat dissipation, improve thermal efficiency, so as to achieve the purpose of energy saving.

Applications

Alumina Bubble Brick can be used in high-temperature shaft kilns, shuttle kilns, molybdenum wire furnaces, tungsten rod furnaces, induction furnaces, nitriding furnaces, etc., which can save at least 30% energy. The application of alumina foam brick can greatly reduce the weight of the furnace body, improve the structure of the furnace body, save refractory materials and save energy.

Specifications

Alumina contents range from 85% to99%

Widely used throughout metallurgical industry

Physical And Chemical Indicators

Properties Brand		LG-99	LG-90	LG-85
(%) Chemical Analysis	Al2O3	≥99	≥90	≥85
	SiO2	≤0.3	≤7	≤13
	Fe2O3	≤0.1	≤0.1	≤0.2
Bulk Density (g/cm3)		1.45~1.60	1.45~1.60	1.45~1.60
Cold Crushing Strength (MPa)		≥15	≥15	≥20
@ 1600℃ Permanent Linear Change (%)		±0.2	±0.2	±0.3
@ 800℃ Thermal conductivity (W/m.k)		≤1.4	≤1.4	≤1.4
(℃) Maximum Service Temperature		≥1800