process for the production of ungebrannten shaped and ungeformten refractory products and / or products for lead and ausmauerungen

摘要

1360183 Refractory concretes SANAC SpA REFRATTARI ARGILLE & CAOLINI 29 Feb 1972 [2 March 1971] 9225/72 Headings C1H and C1J A refractory body is obtained by mixing (1) 50-95% of an aluminous or silico-aluminous granular refractory containing 30-95% Al 2 O 3 ; (2) 2-50% aluminous cement; (3) 1-15% of one or more Na aluminate, Ca 3 Po 4 ; Na phosphate, pyrophosphate, polyphosphate, silicate, borate, magnesium meta and orthosilicate; (4) 1-15% of one or more Si boride, H 3 PO 4 , Na tungstate, Li silicate acid fluoride, citric acid and esters, NH 4 citrate, MgO, and aliphatic OH acids, adding 5-20 water, pouring the mix into a waterproof form, vibrating the mix, removing the body and drying at not above 500‹ C. Refractories specified are clay, jaspercyanite and Al 2 O 3 .