Process for providing insulating covers

摘要

A process for providing a thermal insulating cover of discrete particles for a container of fluids involves forming a plurality of hollow interior, discrete, ceramic particles, firing the particles at a temperature of at least 350 DEG C and then covering the heated liquid with at least a 1/8 inch thick layer of the fired particles. A potentially improved ceramic thermal insulating particle is also described and contains a hollow interior with a plurality of partitions.