FAQs

Abresist Fused Cast Basalt is mineral-based and has high compressive strength but relatively low tensile strength and high brittleness. Raw coal lumps before the mill have large particle sizes (up to 50mm) that drop with high kinetic energy. Under direct vertical dynamic impacts, brittle basalt tiles will shatter immediately. For raw coal chutes, monolithic Kalcret or tough Hardox 500 TUF plates are recommended.

Yes. GAC engineered, supplied, and installed a 20mm-thick Abresist Fused Cast Basalt-lined bottom ash pipeline system at Uông Bí Thermal Power Plant in 2006. During an on-site field inspection conducted after 12 years of continuous, uninterrupted operation, the basalt-lined pipe spools remained perfectly smooth, flat, and showed zero signs of erosion or bục-thủng (rupture).

Abresist Fused Cast Basalt achieves a high hardness of 8 Mohs. Its key engineering advantage in bottom ash lines is its absolute chemical inertness against acidic or alkaline recycled transport water. Furthermore, its centrifugally cast glass-smooth interior reduces pipeline friction loss, eliminates internal rust scaling, and extends pipeline wear life to over 12 years.

Kalcret BTX incorporates premium silicon carbide (SiC) aggregates, specifically formulated to resist high-velocity, high-kinetic fine particle erosion up to 1,200°C. Kalcret CTX incorporates synthetic corundum aggregates, designed to withstand heavy sliding abrasion under high pressure up to 1,400°C. For pulverized coal lines and electrostatic precipitator (ESP) cyclones, Kalcret BTX is the optimal technical choice.

Pulverized coal mixtures navigate pneumatic pipelines at high operating velocities ranging from 25 to 35 m/s. When passing through directional change elbows, centrifugal forces concentrate the highly abrasive coal particles directly against the outer radius of the elbow wall. This intense aerodynamic erosion rate scales exponentially with air velocity (V3 to V5), causing standard carbon steel lines to wear thin and blowout rapidly.