超清版 GB/T 5069-2024 镁铝系耐火材料化学分析方法

ICS 81.080
CCS Q 40
GB/T 5069—2024
镁铝系耐火材料化学分析方法
Chemical analysis of magnesia⁃alumina refractories
2024⁃08⁃23 发布2025⁃03⁃01 实施
国家市场监督管理总局
国家标准化管理委员会发布
代替GB/T 5069—2015

目 次
前言··························································································································Ⅲ
引言··························································································································Ⅳ
1　范围·······················································································································1
2　规范性引用文件········································································································1
3　术语和定义··············································································································1
4　仪器和设备··············································································································1
5　试样制备·················································································································2
6　通则·······················································································································2
7　灼烧减量的测定········································································································3
8　二氧化硅的测定········································································································3
9　氧化铝的测定···········································································································7
10　氧化铁的测定········································································································11
11　二氧化钛的测定·····································································································13
12　氧化钙的测定········································································································16
13　氧化镁的测定········································································································21
14　氧化钾、氧化钠的测定·····························································································25
15　氧化锰的测定［w（MnO）≤0.5%］···············································································27
16　五氧化二磷的测定［w（P2O5）≤3%］············································································28
17　镁砂中游离氧化钙的测定·························································································30
18　EDTA 容量法测定氧化锆（铪）··················································································31
19　硫酸亚铁铵容量法测定三氧化二铬·············································································31
20　二氧化硅、氧化铝、氧化铁、氧化钛、氧化钙、氧化钾、氧化钠、氧化锰、五氧化二磷、氧化锆、三氧化
二铬的测定（电感耦合等离子体发射光谱法）·································································31
21　试验报告································································································