Composition and method for manufacturing steel-containment equipment.

摘要

An improved casting composition utilizes an aqueous finely dispersed silica binder to provide reduced drying times and reduced cracking and explosion of troughs, runners and other containment equipment designed for use by the iron and steel industry. The composition is prepared by mixing 8-14% by weight of the aqueous silica binder with 55-90% by weight of a refractory base material and up to 35% by weight of silicon carbide. Preferably, the composition will also include 5-10% by weight of calcined alumina, 1-10% by weight of microsilica, and .02-1% by weight of a setting agent. Troughs and runners manufactured from the composition also exhibit increased strength and improved resistance to oxidation, corrosion and erosion.