管式电阻炉加热红外吸收法测定红土镍矿中硫
Yejin Fenxi/Metallurgical Analysis（2008）
Abstract
应用管式炉红外碳硫分析仪建立了红土镍矿中硫的测定方法.采用铁矿石标准样品绘制校准曲线,选择适当的仪器工作条件,在试样中加入纯铁粉与线状氧化铜作助熔剂,于高温管式炉的氧气流中加热燃烧,使样品中的硫全部转化为二氧化硫,红外吸收法测定.用本法测定了红土镍矿中的硫含量,相对标准偏差为1.2%～4.9%(n=10),回收率为86.7%～108.0%.
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Key words
Infrared absorption method,Laterite-nickel ore,Sulfur,Tube resistance furnace
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