| 摘要 |
<p>1,230,553. Refining metals; making alloys. L'AIR LIQUIDE SOC ANON POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE. Jan.10, 1969 [Jan.10, 1968], No.1719/69. Heading C7D. [Also in Divisions F3 to F4] A vessel 2, used for treating flowing molten metals with gases is provided with at least two interconnecting compartments 10, 12 one or both of which are equipped with one or more porous gas injection plugs 40. Degassing of aluminium or steel using nitrogen or argon, under atmospheric pressure, or deoxidization and degassing of copper using hydrogen in the upstream compartment and nitrogen in the downstream compartment may be performed in the vessel. Liquid carbon tetrachloride could also be blown through the plugs to remove manganese and titanium from molten cast iron. Solid additives such as magnesium, silicon or copper, or liquid additives may be supplied through hopper 60, and inert gases through line 62. A modified vessel for degassing larger quantities of aluminium or steel flowing to a casting station is also disclosed, Figs.3 and 4 (not shown).</p> |
