Standard Number: YB/T 4909.4-2021(YB/T4909.4-2021)
Chinese:炼钢铁水预处理用钙基脱硫剂分析方法 第4部分：活性氧化钙含量的测定 EDTA络合滴定法和酸碱滴定法
English:Methods of analysis for calcium-based desulfurizers for steelmaking iron pretreatment Part 4: Determination of active calcium oxide content EDTA complexation titration and acid-base titration method
Effective Date:2021-07-01
Standard Applicability:This document specifies the determination of active calcium oxide content by sucrose leaching – disodium ethylenediaminetetraacetic acid (EDTA) complexation titration method, propanetriol – anhydrous ethanol leaching – benzoic acid titration method. This document applies to the determination of active calcium oxide content in calcium-based desulfurizer for steelmaking iron pretreatment, the determination range (mass fraction): ≥60.00%.
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