WERKWIJZE VOOR HET VERVAARDIGEN VAN EEN VOORWERP UIT EEN VUURVAST MATERIAAL.

摘要

1525032 Refractory material UCPI SOC POUR L'UTILISATION DES CERAMIQUES ET DES PLATRES DANS L'INDUSTRIE and CENTRE TECHNIQUE DES INDUSTRIES DE LA FONDERIE 13 May 1976 [29 May 1975] 19704/76 Headings C1H and C1J [Also in Division F4] A process for inhibiting the effect of molten aluminium on an object with which it is intended to come into contact comprises making the object of a concrete which has a deflection temperature under load of above 1000‹ C, an aluminium content expressed as Al 2 0 3 of 10-92% by wt., a calcium content expressed as CaO of 4-14% by wt. and a chemically-bound fluorine content of 0À1-10% by wt., the fluorine being present in the form of an alkali metal or alkaline earth metal fluoride or a mixture thereof with an alkali metal or an alkaline earth metal fluosilicate. Optionally the concrete has a silicon content expressed as SiO 2 of 5-85% by wt.