在大跃进和技术革新运动中,党号召我们破除迷信,解放思想,思想认识得到提高,我们才能解决存在很久的钨精矿中锡的测定方法问题。我国各地钨精矿中所含的锡,并非完全以锡石形态存在,有的矿山几乎全是锡的硫化物,但含量有显著差别,干扰元素如铜、砷、锑、铋、钼等含量亦极不一致。在实际工作中,要求测定方法做到快、准、省,但一般常用方法很难符合这一要求。如酸分解——硫化氢法,不仅耗时长,且硫化氢对健康有损,更重要的是不适于含硫化锡的钨精矿,因而结果偏低。过氧化钠—辛可宁法,不少矿山曾采用,在时间上虽大为缩短,但由于某些矿山含干扰元素量高,影响结果;且由于大量钨 In the Great Leap Forward and the technological innovation movement, when the Party called on us to get rid of superstition, emancipate our minds and improve our understanding of our thinking, we can solve the problem of how to determine tin in tungsten concentrates for a long time. The tin contained in the tungsten concentrates around our country does not completely exist in the form of cassiterite, and some mines are almost all the sulphides of tin, but their contents are significantly different. The contents of interfering elements such as copper, arsenic, antimony, bismuth and molybdenum Is also very inconsistent. In practice, the method of determination is required to be fast, accurate and provincial, but it is very difficult to meet this requirement in common methods. Such as acid decomposition - hydrogen sulfide method, not only takes a long time, and hydrogen sulfide damage to health, more importantly, is not suitable for tin sulfide-containing tungsten concentrate, and thus low results. Sodium peroxide - cinchonine method, many mines have been used, although greatly reduced in time, but because of some mines with high interference elements, the impact of the results; and because a large number of tungsten