A ladle drainage sand and a production process thereof

Abstract

The present application relates to the technical field of metal smelting auxiliary materials, and specifically discloses a ladle drainage sand and a production process thereof, the ladle drainage sand comprises, by weight percentage, 50-85% of chromium ore sand, 10-40% of silica sand, 0.1-0.6% of carbon black, 0.2-0.8% of graphite, 0.1-0.5% of graphene and 4-10% of mullite sand, wherein the total weight percentage of the carbon black, the graphite and the graphene is not more than 1%; and the production process comprises the following steps: mixing the chromium ore sand, the silica sand and the mullite sand uniformly and adding them into the carbon black, the graphite and the graphene which have been mixed uniformly. The ladle drainage sand of the present application is added with the mullite sand and the graphene, the mullite sand can react with the silica sand to improve the refractoriness of the ladle drainage sand and increase the sintering temperature, the graphene has good heat conduction capacity and can make the heat in the ladle drainage sand spread more uniformly, and the synergistic effect of the two can help to build a sintering layer with moderate thickness and stability, which can not only maintain a high ladle self-opening rate, but also is not prone to steel penetration.

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