GB/T 8151.22-2020Methods for chemical analysis of zinc concentrates—Part 22: Determination of zinc, copper, lead,iron,aluminium,calcium and magnesium contents—Wavelength dispersive X-ray fluorescence spectrometric method (English PDF)

Foreword

GB/T 8151 "Methods for Chemical Analysis of Zinc Concentrates" is divided into 23 parts.

---Part 1: Determination of the amount of zinc precipitation separation Na2EDTA titration method and extraction separation Na2EDTA titration method;

---Part 2: Determination of sulfur content, combustion neutralization titration method;

---Part 3: Determination of iron content by Na2EDTA titration;

---Part 4: Determination of the amount of silica molybdenum blue spectrophotometry;

---Part 5: Determination of lead content by flame atomic absorption spectrometry;

---Part 6: Determination of copper content by flame atomic absorption spectrometry;

---Part 7: Determination of arsenic content, hydride generation-atomic fluorescence spectrometry and potassium bromate titration;

---Part 8: Determination of cadmium content by flame atomic absorption spectrometry;

---Part 9: Determination of fluorine content ion selective electrode method;

---Part 10: Determination of tin content hydride generation-atomic fluorescence spectrometry;

---Part 11: Determination of the amount of antimony, hydride generation-atomic fluorescence spectrometry;

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

---Part 13: Determination of the amount of germanium, hydride generation-atomic fluorescence spectrometry and phenylfluorenone spectrophotometry;

---Part 14: Determination of nickel content by flame atomic absorption spectrometry;

---Part 15: Determination of mercury content by atomic fluorescence spectrometry;

---Part 16: Determination of cobalt content by flame atomic absorption spectrometry;

---Part 17: Determination of the amount of zinc hydroxide precipitation-Na2EDTA titration;

---Part 18: Determination of the amount of zinc ion exchange-Na2EDTA titration;

---Part 19: Determination of gold and silver content, lead precipitation or ash blowing fire assay and flame atomic absorption spectrometry;

---Part 20: Determination of copper, lead, iron, arsenic, cadmium, antimony, calcium, magnesium content inductively coupled plasma atomic emission spectrometry;

---Part 21: Determination of thallium content by inductively coupled plasma mass spectrometry and inductively coupled plasma-atomic emission spectrometry;

---Part 22: Determination of zinc, copper, lead, iron, aluminum, calcium and magnesium content by wavelength dispersive X-ray fluorescence spectrometry;

---Part 23: Determination of mercury content Direct method of solid injection.

This part is part 22 of GB/T 8151.

This section was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This part of GB/T 8151 specifies the determination method of zinc, copper, lead, iron, aluminum, calcium and magnesium content in zinc concentrate.

This part is applicable to the determination of zinc, copper, lead, iron, aluminum, calcium and magnesium content in zinc sulfide concentrate by non-arbitration analysis. The measurement range is shown in Table 1.

Table 1 Measuring range (mass fraction): Zn 24.00~62.00; Cu 0.20~2.80; Pb 0.15~4.00; Fe 2.50~15.00; Al 0.10~2.40; Ca 0.25~4.50; Mg 0.15~1.00.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document. For undated references, the latest version (including all amendments) applies to this document.

GB/T 6682 Analytical laboratory water specifications and test methods

GB/T 16597 General Rules of X-ray Fluorescence Spectrometry for Analysis Methods of Metallurgical Products

JJG810 Wavelength Dispersive X-ray Fluorescence Spectrometer

3 Method summary

It is compounded in the order of flux, sample, oxidizer, silica and flux. At step temperature, the ternary mixed oxidant will The qualitative elements and low-valent elements are oxidized into high-valent elements, and lithium bromide is used as a mold release agent. The sample is melted and cast to a dilution ratio of about 1.44 sample piece. Measure the X-ray fluorescence intensity of the characteristic spectrum of the element to be measured in the sample under the optimal measurement conditions of the instrument, and perform The interference effect between elements is corrected, and the content of the element to be measured in the sample is obtained from the calibration curve.

4 Reagents or materials

Unless otherwise specified, only use reagents confirmed to be analytically pure and third-grade water that meets the requirements of GB/T 6682 in the analysis.