Refractories based on fused mullite

Abstract

The production of such nozzles is being introduced at the Krasnoarmeisk factory .Body compositions 4-6 and 62-a were used to make a trial batch of baddeleyite inserts which were fixed into mullite-corundum bases, impregnated with pitch, and tested in the ladles for casting steel into ingot molds, and with continuous casting.Tests confirmed that the inserts with the higher thermal-shock resistance (6 and 62a) during casting of manganese steels from 170-ton ladles at the Donets factory had lower wear. The wear of the edges due to the movement of the gate valve equals 3-5 mm (for 4 and 5 the edge wear reached 7 mm). This means we can recommend these inserts for industrial testing in steel casting.

Hollow spherical granules of forsterite

“…This fact was also observed in the spherical granules based on mullite [6]. This fact was also observed in the spherical granules based on mullite [6].…”

Influence of heat treatment of fused mullite materials on their properties

“…We have shown that it is possible to obtain spheres or granules by blowing jets of molten mullite with compressed air and cooling the molten droplet in air or water medium [5].…”