In the refractory industry, manufacturers usually classify high alumina bricks by their Al₂O₃ content, with common grades including 55%, 65%, and 75%. Many buyers assume that a higher alumina percentage automatically means better performance. In reality, experienced furnace engineers evaluate much more than numbers. The … Read More
High alumina brick is one of the most widely used refractory bricks in industrial furnaces. From steel ladles to cement kilns, from glass furnaces to heat-treatment equipment, it remains a core material in high-temperature lining systems. However, selecting high alumina bricks is not simply about … Read More
Don’t Just Compare Prices — 3 Critical Factors That Determine 20+ Years of Service Life In chemical plants, electroplating workshops, pickling lines, or laboratory projects, the first question buyers usually ask is: “How much does acid resistant brick cost per square meter?” At Kerui Refractory, … Read More
Stop Judging by “White” and “Numbers” From an engineering perspective, Kerui Refractory frequently encounters these misconceptions when assisting customers with high alumina brick selection across steel, cement, and non-ferrous industries.In refractory purchasing, many buyers fall into the same trap: over-focusing on a few visible or … Read More
In practical furnace operation, refractory materials are not selected by name, but by material system, working temperature, corrosion environment, and mechanical load. Below, refractory products are grouped by material category, with international brand names listed inside each category, showing how different names often refer to … Read More
In the world of kiln operation, few phrases are more frustrating than “frequent lining replacement.” It represents not only repeated material costs, but also production downtime, rising energy consumption, overloaded maintenance teams, and silent loss of capacity. For many operators, this cycle has become routine. … Read More
AZS refractory materials (Al₂O₃–ZrO₂–SiO₂) are core lining materials for glass furnaces. Different AZS brick grades show significant performance differences in corrosion resistance, glass contamination control, and service life. Correct selection of AZS 33, AZS 36, and AZS 41 for specific furnace zones directly affects furnace … Read More
Industrial refractory lining is not a simple combination of materials, but a system-level engineering solution driven by functional requirements. In modern furnace lining and kiln lining design, structural configuration, material selection, and performance verification must be accurately matched to real operating conditions. 1. Structure Analysis: … Read More
Refractory Gunning Material vs. Trowelling Castable — How to Choose Precisely? In the construction and maintenance of industrial furnaces and high-temperature equipment, fast and reliable lining installation is essential. Moreover, besides traditional fire bricks, monolithic refractories have become widely used because they provide greater flexibility, … Read More
Selecting the correct refractory material is one of the most important decisions in furnace construction and maintenance. Two of the most commonly used materials—insulating castable and dense castable—serve very different roles. Choosing the wrong one can result in heat loss, higher fuel consumption, premature lining … Read More