PROCESS FOR THE PREPARATION OF THERMALLY INSULATING MATERIALS AND/OR CONSTRUCTION MATERIALS WITH OR WITHOUT REFRACTORY PROPERTIES CONTAINING FLUE DUSTS AND/OR OTHER BY PRODUCTS RECOVERED IN THE SILICON AND IRON-SILICON PRODUCTION

摘要

Process comprises addn. to the mixt., of ca 5-99 wt.% of metallic silicon mfr. filter dust and/or 5-95% of terrosilicon mfr. filter dust and 2-98% byproducts from these processes. To increase performance, the chemical or physical structure or shape of the additives are changed beforehand as and when required for prod. quality purposes. With the above percentages based on the wt. of the initial mixt., both refractory and nonrefractory insulation can be prepd. by this technique.