库仑法分析试样粒度对硫分测值的影响

Influence of sample particle size on sulfur measured value by coulometry

研究了库仑法测硫分时,分析试样粒度对硫分测值的影响。结果表明,当0.2 mm筛上物占总试样10%以上时,造成测硫无显示。当煤试样为-0.1 mm时,测值偏低。因此,制样时应严格按照国家标准,保证试样粒度的均匀性,才能得到准确的硫分测值。

Investigate the influence of sample particle size on sulfur measured value by coulometry.The results show that while the oversized samples of 0.2 mm account for above 10 precent of total sample mass,the sulfur measured value will not be detected.While the sample particle size is below 0.1 mm,the measured value is low.In order to get accurate sulfur measured value,the sample particle size must be homogenous based on our national standards.