熔融制样-X射线荧光光谱法测定硅锰合金中硅锰磷

发布时间：2018-02-02 14:12

本文关键词： 熔融制样 X射线荧光光谱法硅锰合金预氧化硅锰磷　出处：《冶金分析》2015年08期 　论文类型：期刊论文

【摘要】：采用硅锰及锰铁的标准样品,以一定比例人工合成校准样品,绘制校准曲线,建立了X射线荧光光谱法(XRF)测定硅锰合金中硅、锰、磷的方法,各元素的检出限分别为0.015 3%、0.018 9%、0.002 9%。为避免硅锰合金样品对铂金坩埚的腐蚀问题,选用碳酸锂和过氧化钠分步氧化硅锰合金试样,讨论了熔剂、氧化剂的选择及预氧化的操作方式。试验结果表明:将试样与四硼酸锂熔剂以1∶30的质量比混合,加入5滴400g/L溴化铵溶液做脱模剂,制得试样在熔剂中分散均匀的玻璃片,能同时适用于高低含量组分的测定。当硅、锰、磷质量分数分别为24.58%、65.20%、0.190%时,10次测量结果的相对标准偏差(RSD)分别为0.29%、0.14%和0.92%。方法用于硅锰合金样品中硅、锰、磷的测定,与湿法测定值吻合较好,能满足常规分析要求。
[Abstract]:The calibration curve was drawn by using the standard samples of silicomanganese and ferromanganese, and the calibration curve was drawn. A method for the determination of silicon, manganese and phosphorus in silicomanganese alloy by X-ray fluorescence spectrometry (XRF) was established. The detection limit of each element is 0.015 3 and 0.018 9 and 0.0029 respectively. In order to avoid the corrosion of silicon manganese alloy sample to platinum crucible. The fluxes of lithium carbonate and sodium peroxides were discussed. The selection of oxidant and the operation mode of preoxidation. The experimental results show that the sample is mixed with lithium tetraborate flux at 1:30 mass ratio and 5 drops of 400 g / L ammonium bromide solution is added as the release agent. The glass sheets, which are evenly dispersed in the flux, can be used for the determination of high and low content components at the same time. When the mass fraction of silicon, manganese and phosphorus are 24.58 and 65.20,0.190, respectively. The relative standard deviations (RSDs) of the 10 measurements were 0.29% and 0.92%, respectively. The method has been applied to the determination of silicon, manganese and phosphorus in silicomanganese alloy samples. It is in good agreement with the wet method and can meet the requirement of routine analysis.
【作者单位】：山西太钢不锈钢股份有限公司技术中心;
【分类号】：TG115.33
【正文快照】： 硅锰合金是炼钢生产流程不可或缺的复合脱氧剂、脱硫剂以及合金元素添加剂,合金中硅、锰和磷等元素的含量是炼钢过程中工艺调整的参考依据,对钢水的质量有重要影响。所以,快速准确地检测硅锰合金对冶炼至关重要。目前硅锰合金中硅、锰和磷的检测常采用化学湿法分析[1-3],其缺

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