REFRACTORY COMPOSITIONS OF HIGH STRENGTH PLUG FOR TAP HOLE OF CONVERTER USING BY WASTE Mg-Cr BRICK

摘要

The present invention relates to a converter comprising a waste magcro-refractory material including a raw material including a waste magcrod burner and pulverized material, magnesia powder and alumina powder, a raw material including a scale powder as a subsidiary material, and a binder for combining the main material and the subsidiary material The present invention relates to a refractory composition for a high strength plug for use in a steel pipe, which comprises 60 to 70% by weight of pulverized waste, 7 to 10% by weight of magnesia powder, 3 to 5% by weight of alumina powder and 20 to 25% Wherein the binder comprises 5 to 8 parts by weight based on 100 parts by weight of the raw material, wherein the refractory composition is a high strength plug for a converter furnace, Reducing the cost of disposal or disposal by effectively recycling waste magnecross bricks produced in large quantities after use in the RH facility of the steel mill, the VOD ladle of the STS factory, the rotary kiln for the lime sintering plant, and the cement kiln At the same time, there is an effect that the utilization of resources can be enhanced, and a refractory composition capable of manufacturing a plug having a high capacity for slag control of a converter ladle is recycled by using the waste microcrack. In addition, it is possible to efficiently use finite resources, and at the same time to reduce waste and reduce the cost of disposal.