Abstract: A primary test analysis on metallurgical functions of an 80-t single snorkel vacuum refining furnace has been carried out. Results show that the single snorkel vacuum refining furnace has the metallurgical functions including dehydrogenation ,denitriding, decarburizing, deoxidation, desulphurization, liquid heating by chemical reaction, removing inclusions in liquid and adjusting alloy component. By using the 80-t single snorkel vacuum refining furnace to refine liquid, the hydrogen and oxygen content in alloy constructional steels are respectively reduced to (0. 9~1.2) x 10^-6 and (9 - 12) x 1O^-6, in ultra-low carbon steels, the carbon content is (10 ~ 20) x 10 ^-6, the nitrogen content is (29 ~ 37) x 10^-6 and the sulphur content is (10-30) x 10^-6 ； the single snorkel refining furnace has better heating function by chemical exothermic reaction and its inclusions removing effect is equal to that of RH refining unit ； the results of 20 heats ultralow carbon steel alloy-compound-adjusting in single snorkel refining furnace show that the yield of alloy elements is high, the yields of silicon, manganese and aluminum are respectively 93% ~96% , 93% ~95% and 64% ~67%.

摘要： 对80t单嘴真空精炼炉的冶金功能进行了生产实验分析,结果表明,单嘴精炼炉具有脱氢、脱氮、脱碳、脱氧、脱硫、化学升温、去除钢中夹杂物和合金成分调整等冶金功能。利用80t单嘴精炼炉精炼钢水,实验合结钢中氢含量可达(0.9～1.2) ×10^-6、氧含量(9～12) ×10^-6,超低碳钢中碳含量为(10～20) ×10^-6、氮含量(29～37) ×10^-6、钢水中硫含量为(10～30) ×10^-6;单嘴精炼炉具有较好的化学升温效果、去除夹杂物效果同RH精炼炉相当;采用单嘴精炼炉进行20炉超低碳钢合金成分调整结果表明,合金收得率高,硅、锰、铝的收得率分别为93%～96%、93%～95%、64%～67%。