USE OF HEAT-INSULATING MOLDED ELEMENT FOR INSULATION OF METAL MELTS FROM ATMOSPHERE OR FOR INSULATION OF METALLURGICAL VESSEL Russian patent published in 2020 - IPC B22D7/10 

FIELD: metallurgy.

SUBSTANCE: invention can be used for thermal insulation of molten metal, in particular steel melt, ingot, crystallized from metal melt, refractory lining, in particular in multilayer masonry or heat treatment furnace, or as fire-retardant lining, or as filtering material for hot gases. Unburnt refractory molded element (1) has matrix (2) from binder, containing at least one bound constant binder, and filler grains (3), which are introduced into matrix (2) from binder. Filler consists of at least 50 wt % of biogenic silicic acid, preferably of rice husks ashes, relative to total dry mass of filling substances. Molded element (1) has a softening point determined by means of a heating microscope according to DIN EN 51730 (09/2007), from 1200–1650 °C.

EFFECT: providing improved heat-insulating properties with ease of manufacture and harmlessness for health and environment.

38 cl, 6 dwg, 7 tbl, 1 ex