目前,世界上有31个采锡国。1983年全世界的锡精矿产量为19.25万吨,1978年23.064万吨,1950年18.096万吨。F.卡洛特及其同事们数十年来在巴黎对世界矿业生产情况一直进行详尽的分析,每五年发布一次150个国家50余种矿物原料的生产情况简报。从表1可以看出,锡矿石的生产集中在少数国家,马来西亚、印尼和玻利维亚,占世界产量的50％。苏联、中国、民德和捷克的锡产量占18～20％。由于这些社会主义国 At present, there are 31 mining countries in the world. In 1983, tin concentrate production in the world was 192,500 tons, 230,640 tons in 1978 and 180,996 tons in 1950. F. Carlot and his colleagues have for decades conducted a detailed analysis of the world’s mining production in Paris, publishing a bi-annual briefing on the production of more than 50 mineral raw materials in 150 countries. As can be seen from Table 1, tin ore production is concentrated in a few countries, Malaysia, Indonesia and Bolivia, accounting for 50% of world production. Tin production in the Soviet Union, China, Germany, Germany and the Czech Republic accounts for 18-20%. Because of these socialist countries