Abstract:

To explore the usability of vanadium iron smelting furnace slag for refractory alumina,this paper introduces a physical chemistry experiment with an unbroken alumina slag cake.The result shows that the major constituents of the alumina slag are Al2O3,MgO and CaO，and the major compositions are spinel and calcium aluminate；its refractoriness is over 1 790 ℃，the bulk density is higher than 3.0g·cm-3，the water absorption is 3.0%.Alumina slag can be uesd to replace high alumina cement for its hydraulicity.Its particle strength is similar with flint,so it can be used as refractory aggregate.In conclusion，the alumina slag can be used for refractory material.