This product is a new type of refractory material newly developed for ceramic cups, wind ports, iron ports and slag ports of blast furnaces. It features excellent microporosity index, excellent alkali resistance, high thermal conductivity, excellent resistance to slag and corrosion of liquid iron, etc. It applies to the bottom of the blast furnace with different capacity, the ceramic cup masonry of the furnace cylinder, the air port, the iron port, the slag port and other parts of the furnace.