锡生产已有几千年的历史,但直到本世纪三十年代、各炼锡厂都沿袭着较为古老的方法,选出高品位的锡精矿(含60—70％Sn),含杂质很少,然后在小型鼓风炉或反射炉中熔炼,粗锡作简单的火法精炼,结果是金属回收率不高,产品质量不好。在长期的生产过程中虽有改进,而主干流程和基本设备没有太大变化。 Tin production has been thousands of years old, but it was not until the 1930s that tin smelters followed the more ancient method of selecting high-grade tin concentrates (containing 60-70% Sn), containing impurities Less, and then smelting in a small blast furnace or reflex furnace, crude tin for simple fire refining, the result is the metal recovery is not high, the product quality is not good. Although there have been improvements in the long-term production process, the main processes and basic equipment have not changed much.