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这一试验是在云南锡业公司和该公司第一冶炼厂的大力支持和协助下进行的。今年三月开始进行扩大试验以来,取得了较好的结果,现简介如下。试验采用全水套真空炉(附图),内装石墨加热器、冷凝器和蒸发器。附属设备包括旋片式真空泵
This test was carried out with the strong support and assistance of Yunnan Tin Company and the company’s First Smelter. Good results have been achieved since the experiment was expanded in March this year. The briefing is as follows. The experiment uses a full water jacket vacuum furnace (with photos), built-in graphite heater, condenser and evaporator. Ancillary equipment includes rotary vane vacuum pumps