YS/T 820.26-2012Methods for chemical analysis of laterite nickel ores. Part 26: Determination of loss on ignition. Gravimetric method (English PDF)

Foreword

This part is drafted in accordance with the provisions of GB/T 1.1-2009.

YS/T 820-2012 "Methods for chemical analysis of lateritic nickel ore" is divided into 26 parts.

- Part 1: Determination of nickel content. Flame atomic absorption spectrometry;

- Part 2: Determination of nickel content. Dimethylglyoxime spectrophotometry;

- Part 3: Determination of total iron content. Potassium dichromate titration;

- Part 4: Determination of phosphorus content. Phosphorus molybdenum blue spectrophotometry;

- Part 5: Determination of cobalt content. Flame atomic absorption spectrometry;

- Part 6: Determination of copper content. Flame atomic absorption spectrometry;

- Part 7: Determination of calcium and magnesium content. Flame atomic absorption spectrometry;

- Part 8: Determination of silica content. Potassium silico-fluoride titrimetric method;

- Part 9: Determination of scandium and cadmium contents. Inductively coupled plasma mass spectrometry;

- Part 10: Determination of calcium, cobalt, copper, magnesium, manganese, nickel, phosphate and zinc content. Inductively coupled plasma atomic emission spectrometry;

- Part 11: Determination of fluorine and chlorine contents. Ion chromatography;

- Part 12: Determination of manganese content. Flame atomic absorption spectrometry;

- Part 13: Determination of lead content. Flame atomic absorption spectrometry;

- Part 14: Determination of zinc content. Flame atomic absorption spectrometry;

- Part 15: Determination of cadmium content. Flame atomic absorption spectrometry;

- Part 16: Determination of carbon and sulfur content. High frequency combustion with infrared absorption spectrometry - Part 17: Determination of arsenic, antimony and bismuth contents. Hydride generation-atomic fluorescence spectrometry;

- Part 18: Determination of mercury content. Cold atomic absorption spectrometry;

- Part 19: Determination of aluminum, chromium, iron, magnesium, manganese, nickel and silicon contents. Energy-dispersive X-ray fluorescence spectrometry;

- Part 20: Determination of aluminum content. EDTA titration;

- Part 21: Determination of chromium content. The ammonium-ferrous sulfate titration method;

- Part 22: Determination of magnesium content. EDTA titration;

- Part 23: Determination of cobalt, iron, nickel, phosphorus, aluminium oxide, calcium oxide, chromium oxide, magnesium oxide, manganese oxide, silicon dioxide and titanium dioxide content. Wavelength dispersive X-ray fluorescence spectrometry;

- Part 24: Determination of hygroscopic moisture content. Gravimetric method;

- Part 25: Determination of combined water content. Gravimetric method;

- Part 26: Determination of loss on ignition. Gravimetric method.

This part is Part 26 of YS/T 820-2012.

This standard shall be under the jurisdiction of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243).

1 Scope

This part of YS/T 820 specifies the gravimetric method for the determination of loss on ignition (LOI) in laterite nickel ore.

This part applies to the determination of loss on ignition in laterite nickel ore.

The measurement range is 6.00%~14.00%.

2 Method summary

Ignite the pre-dried sample to a constant weight at 1000 °C; calculate the loss on ignition (LOI) according to the reduced mass of the sample.

3 Instruments

3.1 High-temperature furnace. the temperature can be controlled at 1000 °C±50 °C.

4 Samples

The particle size of the samples shall be less than 160 µm; bake them in an oven at 105 °C~110 °C for 2 h, and cool them to room temperature in a desiccator.

5 Analysis steps

6 Calculation of analysis results

The loss on ignition is calculated according to formula (1), the result is expressed in terms of the mass fraction omegaLOI of the loss on ignition, its value is expressed in %.

7 Precision

8 Test report

This chapter specifies the content of the test report. At least the following content shall be given.