Abstract: A thermally stable lance for injecting particulate material into molten metal is provided which comprises an elongated thermal insulating member having spaced apart first and second ends and at least one wall therebetween defining the member; a reinforcing rod axially disposed in the insulating member with one end of the rod extending beyond the first end of the insulating member, the rod having a plurality of outwardly extending protrusions in contact with the said insulating member; a length of wire wound around the reinforcing rod which is in contact with the insulating member; and a hollow injection tube having spaced apart first and second ends axially disposed in the insulating member with the first end thereof extending beyond the first end of the insulating member and the second end extending beyond the second end of the insulating member.