T/YXNX 006-2023 Determination of Free Calcium Oxide in Aluminosilicate Refractories - Ethylene Glycol Method
T/YXNX 006-2023 Determination of Free Calcium Oxide in Aluminosilicate Refractories - Ethylene Glycol Method
Basic Information
Scope
Scope: This document specifies the quantitative analysis method for free calcium oxide in aluminum-silicon refractory materials, including the measurement range, normative referenced documents, terms and definitions, method principle, instruments and reagents, sample preparation, measurement, result calculation, quality control, and result reporting. This document is applicable to the quantitative analysis of free calcium oxide in aluminum-silicon refractory materials; Main technical content: Method principle: At 60℃~70℃, free calcium oxide in aluminum-silicon refractory materials can form soluble calcium glycolate with ethylene glycol. After filtration, it is thoroughly washed with anhydrous ethanol. Methyl red-bromophenol green is used as an indicator, and the free calcium oxide is titrated with standard hydrochloric acid solution. The amount of free calcium oxide is calculated based on the consumption of hydrochloric acid.