High density fused silica mixes, refactory shapes made therefrom, and method of making the same

摘要

A refractory mix for forming a fused silica based refractory shape consisting essentially of a high purity fused silica and a binder system consisting essentially of a high purity colloidal silica solution and a high purity ammonium lignosulfonate. The invention also comprises fused silica based refractory shapes formed from such mix by pressing and firing.