acid refractory

acid refractory

[′as·əd rə′frak·tə·rē]
(materials)
A refractory that is composed principally of silica and reacts at high temperatures with bases such as lime, alkalies, and basic oxides.
References in periodicals archive ?
Silica is an acid refractory and demands an acid (high silica) slag.
For example, if a silica or alumina acid refractory is used, the charge materials must be low in phosphorus and sulfur, because neither refractory will react with and remove these two elements.