KS L ISO 21068-2-2022 含碳化硅原料及耐火制品化学分析 第2部分:烧失量、总碳、游离碳和碳化硅、总和游离二氧化硅、总和游离硅的测定
Chemical analysis of silicon-carbide-containing raw materials and refractory products-Part 2:Determination of loss on ignition, total carbon, free carbon and silicon carbide, total and free silica and total and free silicon