Sealing plug for tiltable converters
OwnerBerthold Stilkerieginventor
Life of this patent
Estimating the term…
Abstract
A sealing plug 1, consisting of fireproof material 10 located between the upper shaping plate 19 and the lower shaping plate 20, is used to seal the tap hole 3 of a tiltable converter 2. Said fireproof material 10 consists of bonding clay, water, oil and other constituents, particularly of 10-30% by weight hollow glass balls made of “foam glass” produced from recovered glass which have a rough surface suitable for binding large volumes of moisture. The sealing plug 1 thus retains the necessary stability even over longer periods and can thus be shaped in the tap hole 3 so that it is arrested against the wall 28, even after longer periods of storage. The hollow glass balls 11, 12, 13, 14 also entail a significant reduction in the weight of the entire sealing plug 1.
Claims14
A sealing plug for the tap hole (3) of a tiltable converter (2) which can be introduced into the tap hole (3) from the outside of the converter (2) to the inside (5) of the converter and secured there so that it is washed out of the tap hole (3) by and with molten steel (6), and which comprises fireproof material (10) with constituents of clay, binders, water and mineral oil, wherein the fireproof material (10) is mixed with hollow mineral glass balls (11, 12, 13, 14), which are formed to absorb water.
A method of making a sealing plug mixture consisting of a clay constituent, binder, water, mineral oil and fireproof material containing additives, to be used for the temporary closure of the tapping hole of a tiltable converter wherein hollow mineral glass balls, which are soaked before mixing with the other constituents of the mixture, binding 100% of their intrinsic weight in water to themselves, are used as additives.
Dependencies are inferred from the claim text.