Product Overview

The value of a ceramic fiber module is not measured in W/(m·K). It is measured in shift-hours of furnace downtime. Lining a furnace with layered blanket means cutting, positioning and pinning sheet after sheet, layer after layer, with every layer an opportunity for a gap. A module arrives pre-assembled at full lining thickness with its anchor already integral to the body — the installer welds the anchor to the shell and moves to the next module. On a large rebuild, that difference measures in days, and for a production furnace those days are the largest line item in the whole job.

Two design details do the work. First, modules are compressed 10 to 15% during manufacture and restrained by banding that is cut at installation; as the module relaxes it presses against its neighbours, so joints close rather than open — and as the lining shrinks slightly at service temperature, the stored compression continues to take up that movement. Second, the blanket is folded so the fiber layers run perpendicular to the hot face. Gas and heat must cross the fiber layers rather than travel along them, which suppresses convective bypass and gives the lining better erosion resistance in high-velocity flue paths than a parallel-layered build. LFJ supplies modules in all three temperature grades with stainless or carbon steel anchor hardware to suit your shell material and service temperature. Request a Quote.

Features