Method for manufacturing wear linings for casting ladles and tundishes
AssigneeNorth Cape Minerals AS
InventorSlagnes Steinar
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Abstract
The invention relates to a method of manufacturing of wear linings consisting of particulate refractory materials with a low thermal conductivity for casting ladles and tundishes for casting of metals. The so called water glass method is used for hardening the particulate material.
Claims19
Method of producing refractory wear linings (6, 9, 11) in casting ladles and casting boxes (1) intended for metal casting, the wear lining (6, 9, 11) being formed by a floatable compound, introduced between the more permanent lining (2) of the casting ladle or the casting box and a matrix (3, 8, 10) lowered into the same, of granular refractory material with low thermal conductivity containing at least 4% by weight and preferably 6-12% by weight of a sodium or potassium water glass, characterized in that the said compound is hardened in its entirety by means of siliceous gel precipitated from the water glass through the supply of carbon dioxide.
Method according to 2 characterized in that into the compound of particulate material used to produce the wear lining there has been fed, apart from the water glass admixture, a fiber material in the form of metal fibers and/or organic fibers, such as cellulose fibers or plastic fibers, and/or inorganic fibers, such as glass fibers or ceramic fibers, the fiber material in question not being allowed to have a mean diameter significantly exceeding the mean particle diameter of the powder material.
Dependencies are inferred from the claim text.