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据1980、1981年美国矿业杂志及1980年加拿大采矿杂志有关萤石的报导,由于人们怀疑氯氟碳化合物的扩散,破坏大气的臭氧层,美国禁止使用氟碳化合物,因而化学工业对萤石的需求减少,曾导至世界萤石有七年时间长期供过于求,销售不景气,而关闭了一些矿山。但是,近年来由于氟的活性,萤石在钢铁生产、炼铝业、玻璃纤维和制冷剂等方面被广泛采用,特别制冷剂耗氟量的增加更为突出。79年世界萤石比78年增
According to reports of fluorite from the 1980 and 1981 mining magazines in the United States and the mining mining magazine in Canada in 1980, the United States banned the use of fluorocarbons due to doubts about the proliferation of chlorofluorocarbons and the destruction of the ozone layer in the atmosphere, so the chemical industry’s demand for fluorite Reduce, led to the world Fluorite has seven years of long-term oversupply, sales slump, and closed some mines. However, in recent years, due to the activity of fluorine, fluorite is widely used in the production of steel, aluminum refining, glass fiber and refrigerant, and the increase of fluorine consumption of special refrigerants is more prominent. 79 years the world’s fluorite than 78 years