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GB/T 5070-2015Chemical analysis of chromium-containing refractories (English PDF)

含铬耐火材料化学分析方法

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Issued by

AQSIQ; SAC

Level / Type

National · Recommended

Issue date

December 10, 2015

Implementation date

July 1, 2016

Scope

GB/T 5070-2015 is the English-translated version of 含铬耐火材料化学分析方法.

GB/T 5070-2015 is the Chinese standard "Chemical analysis of chromium-containing refractories". Its scope clause reads: This standard specifies the chemical analysis of chromium-containing refractories.

Analysis of this standard are as follows. a) loss on ignition (LOI); b) silica (of SiO2); c) iron oxide (of Fe2O3); d) alumina (of Al2O3); e) Titanium dioxide (- TiO2); f) calcium oxide (of CaO); g) magnesium oxide (of MgO); h) chromium oxide (Cr2O3 as); i) potassium oxide (K2O); j) sodium oxide (of Na2O); k) manganese oxide (of MnO); l) phosphorus pentoxide (P2O5); m) zirconium (hafnium) [Zr (Hf) O2].

This standard applies to elemental analysis measurement range shown in Table 1. Table 1 Measuring range Analysis Project Scope (mass fraction) /% Analysis Project Scope (mass fraction) /% LOI - K2O <=2 SiO2 <=10 Na2O <=1 Al2O3 2 ~ 97 MnO <=3 Fe2O3 <=30 Cr2O3 >=1 TiO2 <=5 P2O5 <=5 CaO 0.5 ~ 15 Zr (Hf) O2 <=5 MgO 10 ~ 96.

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Document preview — GB/T 5070-2015

National Standard of the People's Republic of China

ICS: 81.080
Classification: Q 40

Issued by: General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of the PRC

Preface
1 Scope
2 Normative references
4 Sample Preparation
5 General
6 3 test report
10 Determination of alumina
11 10 Determination of titanium dioxide
16 Determination of manganese oxide [w (MnO) <=1%]
17 Determination of zirconium (hafnium) of (EDTA volumetric method)
Appendix A (normative) Acceptance value analysis program
Annex B (informative) inductively coupled plasma emission spectrometer calibration curve established

1 Scope

This standard specifies the chemical analysis of chromium-containing refractories. Analysis of this standard are as follows.

a) loss on ignition (LOI);

b) silica (of SiO2);

c) iron oxide (of Fe2O3);

d) alumina (of Al2O3);

e) Titanium dioxide (- TiO2);

f) calcium oxide (of CaO);

g) magnesium oxide (of MgO);

h) chromium oxide (Cr2O3 as);

i) potassium oxide (K2O);

j) sodium oxide (of Na2O);

k) manganese oxide (of MnO);

l) phosphorus pentoxide (P2O5);

m) zirconium (hafnium) [Zr (Hf) O2].

This standard applies to elemental analysis measurement range shown in Table 1.

Table 1 Measuring range

Analysis Project Scope (mass fraction) /% Analysis Project Scope (mass fraction) /%

LOI - K2O <=2

SiO2 <=10 Na2O <=1

Al2O3 2 ~ 97 MnO <=3

Fe2O3 <=30 Cr2O3 >=1

TiO2 <=5 P2O5 <=5

CaO 0.5 ~ 15 Zr (Hf) O2 <=5

MgO 10 ~ 96

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 4984 Chemical analysis of zirconium-containing refractories

GB/T 7728 metallurgical products for chemical analysis by flame atomic absorption spectrometry General

GB/T 8170 repair value expressed about the rules and limit values and judgment

GB/T 10325, shaped refractory products acceptance sampling inspection rules […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 35 pages — is available in the English PDF.

Referenced standards

Normative references

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