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耐火材料(引进产品)中的碳化物包括游离碳和碳化硅,由于其含量范围宽(0.00x～xx％),而且碳化硅熔点高,不易充分燃烧等原因,目前国内尚无比较理想的测定方法,因而成为引进耐火材料复验中的一个难题,本文介绍用高频燃烧—红外检测方法进行测定,实验证明,方法操作简便,分析精度较高,较为理想。 一、仪器与主要试剂 LECO CS-244碳硫同时测定仪。 纯钨粒(或LECOⅡ助熔剂);纯锡粒;纯铁粉。
Because of its wide range of content (0.00x ~ xx%) and high melting point of silicon carbide, it is not easy to fully burn carbide in the refractories (imported products), including the free carbon and silicon carbide. At present, there is no ideal measurement Method, which has become a challenge in the introduction of refractories retesting. This article describes the use of high-frequency combustion - infrared detection method for the determination, the experiment shows that the method is simple, high precision, more ideal. First, the instrument and the main reagent LECO CS-244 carbon and sulfur simultaneous detector. Pure tungsten particles (or LECO Ⅱ flux); pure tin tablets; pure iron powder.