Product Overview

Loose fiber is the starting point for all ceramic fiber products, and the manufacturing process determines what it's best suited for. Spinning uses centrifugal spinning to produce long, continuous fibers with a relatively low slag ball content (slag balls are unfiberized glassy particles formed during the melting process). Blow-blown fibers are produced using high-speed airflow, resulting in shorter fibers and a higher slag ball content, but at a lower cost. Suppliers who only list "ceramic fiber loose fiber" without specifying the manufacturing process conveniently omit the most critical variables for your application.

This difference is practical, not academic. Low-slag-balling, long-spun fibers are essential for downstream blanket, textile, and paper manufacturing, and also provide the interlocking properties needed for gap filling. High-slag-balling, blown fibers, on the other hand, are the correct and more economical choice for blending castables and plastics. In these applications, the fiber acts as a dispersive reinforcing phase, not a self-supporting component; the slag-balling content actually contributes to the bulk density. Ritsufeng offers two processes for each of its three temperature grades, clearly listing the slag-balling content and average fiber length in the specifications, rather than leaving customers to discover this only upon delivery. Inquire now.

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