GB/T 6609.30-2022Chemical analysis methods and determination of physical performance of alumina—Part 30: Determination of trace elements—Wavelength dispersive X-ray fluorescence spectrometric method (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.

This document is part 30 of GB/T 6609 "Methods for Chemical Analysis and Determination of Physical Properties of Alumina". GB/T 6609 has The following sections were published.

--- Part 1: Determination of trace element content by inductively coupled plasma atomic emission spectrometry;

--- Part 2: Determination of mass loss at 300°C and 1000°C;

--- Part 3: Determination of silica content by molybdenum blue photometric method;

--- Part 4: Determination of ferric oxide content by phenanthroline spectrophotometry;

--- Part 5: Determination of sodium oxide content;

--- Part 6: Determination of potassium oxide content;

--- Part 7: Determination of titanium dioxide content by diantipyridine methane spectrophotometric method;

--- Part 8: Photometric determination of chromium trioxide content with diphenylcarbohydrazide;

--- Part 9: Determination of copper oxide content by the new cuprous aura spectrophotometry;

--- Part 10: Determination of vanadium pentoxide content by benzoylphenylhydroxylamine extraction spectrophotometry;

--- Part 11: Determination of manganese monoxide content by flame atomic absorption spectrometry;

--- Part 12: Determination of zinc oxide content by flame atomic absorption spectrometry;

--- Part 13: Determination of calcium oxide content by flame atomic absorption spectrometry;

--- Part 14: Lanthanum-alizarin complex ketone spectrophotometric determination of fluorine content;

--- Part 15: Spectrophotometric determination of chlorine content with ferric thiocyanate;

--- Part 16: Curcumin spectrophotometric determination of boron trioxide content;

--- Part 17: Molybdenum blue spectrophotometric determination of phosphorus pentoxide content;

--- Part 18: N,N-Dimethyl-p-phenylenediamine spectrophotometric determination of sulfate content;

--- Part 19: Determination of lithium oxide content by flame atomic absorption spectrometry;

--- Part 20: Determination of magnesium oxide content by flame atomic absorption spectrometry;

--- Part 21: Determination of gallium trioxide content by butyl rhodamine B spectrophotometry;

--- Part 22: Sampling;

--- Part 23: Preparation and storage of samples;

--- Part 24: Determination of the angle of repose;

--- Part 25: Determination of bulk density;

--- Part 26: Determination of effective density by the pycnometer method;

--- Part 27: Particle size analysis and sieving method;

--- Part 28: Determination of particle size distribution of fine powders less than 60µm wet sieve method;

--- Part 29: Determination of adsorption index;

--- Part 30: Determination of trace element content - wavelength dispersive X-ray fluorescence spectrometry;

--- Part 31: Determination of flow angle;

--- Part 32: Determination of alpha-aluminum oxide content by X-ray diffraction;

--- Part 33: Determination of wear index;

--- Part 34: Calculation method of aluminum oxide content;

--- Part 35: Determination of specific surface area nitrogen adsorption method;

--- Part 36: Determination of flow time;

--- Part 37: Determination of particle size less than 20µm particle content.

This document replaces GB/T 6609.30-2009 "Methods for Chemical Analysis and Determination of Physical Properties of Alumina Part 30: X-ray Determination of Trace Elements by Fluorescence Spectrometry", compared with GB/T 6609.30-2009, except for structural adjustment and editorial changes, the main technical changes as follows.

a) Change the name of the standard to "Methods for chemical analysis of alumina and methods for the determination of physical properties - Part 30: Content of trace elements Determination of wavelength dispersive X-ray fluorescence spectrometry";

b) When using the grinding and tableting method, the sample weighing, grinding and tableting conditions and method precision data have been added (see Chapter 6);

c) Deleted the contents of Appendix A "Working Parameters of X-ray Fluorescence Spectrometer" (see Appendix A of the.2009 edition).

Introduction

GB/T 6609 "Alumina Chemical Analysis Method and Physical Properties Determination Method" is the chemical analysis method and physical properties determination method of alumina.

A series of standards for the method, including preparation and storage of alumina samples, determination of moisture loss on ignition, chemical element composition analysis, particle size analysis, bulk density, etc.

Total of 37 parts, technical specifications for the operation of alumina chemical and physical analysis, in alumina trade settlement, chemical element determination comparison, etc.

Wide range of applications. GB/T 6609.30 specifies the determination of trace element content in alumina by wavelength dispersive X-ray fluorescence spectrometry method.

Due to the need for timeliness of industrial continuous production, many alumina or electrolytic aluminum plants at home and abroad use XRF analysis, using the same sample preparation technology, namely high temperature fusion sample preparation. Due to the requirements of the method of dilution of the sample preparation flux in the fusion method, the fluorescence count intensity decreased seriously, which may affect the For the determination of ultra-low elements such as silicon, phosphorus, and titanium with low impact, the powder tablet method for sample preparation is convenient for operation, high fluorescence counting intensity and low cost. This method is rapidly popularized and applied in the industry.

This revision of GB/T 6609.30 clearly stipulates the wavelength dispersive X-ray fluorescence analysis method, and the "grinding and tableting method" enhances the XRF method.

The flexibility of the XRF method expands the sample preparation method of the related XRF method, makes up for the disconnection between the standard and the actual measurement, and further improves the tableting method of related enterprises.

The standardization of operation and the accuracy scale of XRF analysis provide a basis for the analysis, comparison and exchange of alumina tableting methods for alumina-related enterprises.

At the same time, the determination and analysis system of alumina chemical elements was further improved.

1 Scope

This document specifies the method for the determination of trace element content in alumina by wavelength dispersive X-ray fluorescence spectrometry, including fusion sample preparation and Grinding and tableting method and fusion sample preparation method are arbitration methods.

This document applies to the determination of trace elements sodium, silicon, iron, calcium, potassium, titanium, phosphorus, Vanadium, zinc and gallium (in oxides expressed as Na2O, SiO2, Fe2O3, CaO, K2O, TiO2, P2O5, V2O5, ZnO and Ga2O3) content, Other alumina varieties can refer to the method of using this document. The measurement range is shown in Table 1.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 6609.22 Alumina Chemical Analysis Methods and Physical Properties Determination Methods Part 22: Sampling

GB/T 6609.23 Methods for chemical analysis of alumina and methods for determination of physical properties - Part 23: Preparation and storage of samples

GB/T 8170 Numerical Rounding Rules and Representation and Judgment of Limit Values

3 Terms and Definitions

There are no terms and definitions that need to be defined in this document.