| 摘要 |
<p>Apparatus for melting or smelting metal, typically for aluminium cans scrap recovery, has a muffle chamber (14) through which a flow of hot gases is provided for melting there being a heat retaining matrix (18) made up from a body or bodies of ceramic or other heat stable material. e.g. a layer of balls (20), defining random interstices through the matrix so that the hot gases, and the metal when molten can flow therethrough to promote effective heat exchange between the gas and the body or bodies, and between the gas and body or bodies and the molten or other metal in surface contact therewith. <IMAGE></p> |
