Patent ID: 7625423
Filing Date: 2009-12-01
Classification: C22B,F27B,F27D

Abstract:
1. A method for purifying copper comprising: (a) blowing oxygen onto a copper melt in a melting furnace lined with refractory material and having a waste heat boiler set onto the melting furnace in order to oxidize contaminants contained in the melt and thereby remove the contaminants from the melt; (b) providing a splash protection device above the copper melt on an inside wall of the melting furnace, the splash protection device preventing copper splashing out of the copper melt from penetrating into the waste heat boiler; and (c) causing boiling water to flow through the splash protection device to cool the splash protection device, the boiling water being under a pressure of more than five bar and the temperature of the splash protection device is more than 200° C. and the water is evaporated at least in part as the water flows through the splash protection device, the temperature of the splash protection device serving to eliminate erosion corrosion in the splash protection device.