硅铁稀土合金中一般含硅量较高,常见的在28～40%,以往采用氢氧化钠和过氧化钠熔融试样后,用盐酸酸化,蒸发脱水,重量法分析,此法操作时间长,而且熔融时很易溅失。我们试验将重量法改进为比色法,取得了良好的效果,一分样品可在30分钟内完成。 Ferrosilicon rare earth alloy generally higher silicon content, common in the 28 to 40%, the previous sodium hydroxide and sodium peroxide melting the sample, acidified with hydrochloric acid, evaporation dehydration, gravimetric analysis, this method long operating time , But also easy to splash when melted. We test the weight method improved colorimetry, and achieved good results, a sample can be completed within 30 minutes.