BLOXEN Grade II High-Alumina Brick


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Model:
Grade II
Brand:
BLOXEN

refractory brick High-Alumina Brick High temperature refractory

Product Description

High-alumina brick is a high-performance refractory material produced from high-purity bauxite, corundum, and other alumina-rich raw materials, and sintered at 1500–1700 °C. It is characterized by excellent high-temperature stability, high mechanical strength, and strong corrosion resistance, making it a critical structural material for industrial kilns and furnaces operating under severe thermal and chemical conditions.

Designed to withstand prolonged exposure to high temperatures, thermal shock, and abrasive or erosive environments, this product provides reliable service life and helps reduce maintenance costs in demanding industrial processes.

Feature

With an Al₂O₃ content ranging from 60% to 75%, the brick exhibits excellent refractoriness (≥1770 °C) and a high load softening temperature (≥1450 °C). It maintains structural integrity even under long-term high-temperature conditions, with continuous service temperatures of up to 1350 °C.

Typical Application

• Cement Manufacturing: Rotary kilns (burning and transition zones, kiln inlet); preheater cyclones and calciner linings

• Steel & Metallurgy: Regenerator checker bricks; furnace hearths and skid rails; non-ferrous smelting furnace linings

• Glass Industry: Glass melting furnaces (sidewalls, breast walls, crowns); regenerator checker bricks

• Chemical Industry: Sulfuric acid roasting furnaces, ammonia cracking furnace linings, and waste incinerator linings

• Other High-Temperature Applications: Ceramic kilns, boiler combustion chambers, and thermal power plant furnace linings

Parameter Control

Item		LZ 70F	LZ 65	LZ 65F
Al₂O₃(%) ≥		70	65	65
Fe₂O₃(%) ≤			2.0
Bulk density ≥		2.50	2.35	2.35
Apparent porosity (%) ≤		26	24	26
Compressive strength in temperature (MPa）≥		48	45	45
Refractoriness under load 0.2 MPa (ºC) ≥		1450	1500	1450
Heating permanent linear change(%)	1450ºC * 2h	0.1~ -0.4