YS/T 1047.5-2015Methods for chemical analysis of copper magnetite - Part 5: Determination of phosphorus content - Titrimetric method (English PDF)

Foreword

YS/T 1047-2015 "Methods for chemical analysis of copper magnetite" is divided into 11 sections.

--- Part 1. Determination of copper content of 2,2'-quinoline spectrophotometry and flame atomic absorption spectrometry;

--- Part 2. Determination of total iron content of dichromate method;

--- Part 3. Copper and iron - Determination of the amount of sodium thiosulfate titration;

--- Part 4. Determination of the amount of sulfur by high frequency combustion infrared absorption spectroscopy;

--- Part 5. Determination of phosphorus content titration;

--- Part 6. copper, total iron, silica, alumina, calcium oxide, magnesium oxide, titanium oxide, manganese and phosphorus contents - wave Long-dispersive X-ray fluorescence spectrometry;

--- Part 7. copper, manganese, aluminum, calcium, magnesium, titanium and phosphorus content - Inductively coupled plasma atomic emission spectrometry.

--- Part 8. silicon dioxide content - Gravimetric method;

--- Part 9. Determination of metallic iron content of sulfonic acid spectrophotometry;

--- Part 10. Determination of the amount of ferrous oxide dichromate method;

--- Part 11. Determination of the amount of magnetic iron dichromate method.

This is Part 5.

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

The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized.

This section is responsible for drafting unit. People's Republic of China Bayuquan Exit Inspection and Quarantine.

1 Scope

YS/T 1047 This section specifies the determination of copper magnetite phosphorus content.

This section applies to the determination of phosphorus in copper magnetite content. Measurement range (mass fraction) 0.20% - 5.50%.

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 6379.2 measurement methods and results of Accuracy (trueness and precision) - Part 2. Determine the standard measurement method to repeat of the basic methods of reproduction Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 6730.3 chemical analysis of iron gravimetric method for the determination of hygroscopic moisture in analytical samples GB/T 10322.1 iron ore sampling and sample preparation methods GB/T 12805 Laboratory glassware Burettes GB/T 12806 Laboratory glassware single marking flask GB/T 12808 Laboratory glassware single marking pipette

3 Method summary

Hydrochloric acid, nitric acid and perchloric acid decomposition of the calcined sample. The residue with hydrofluoric acid in addition to silicon, sodium carbonate melt. Ammonia precipitation collected Phosphorus, dissolved with hydrochloric acid precipitation, in acid medium, phosphate and ammonium molybdate ammonium phosphomolybdate formed precipitate was filtered, washed, and the precipitate was dissolved in an excess of standard sodium hydroxide solution and then titrated excess nitrate standard titration solution of sodium hydroxide, thereby measuring the amount of phosphorus.

4 Reagents

Unless otherwise stated, use only in the analysis confirmed analytically pure reagents and in line with two water GB/T 6682 regulations.

4.1 anhydrous sodium carbonate.

4.2 ammonium nitrate.

4.3 hydrochloric acid (rho = 1.19g/mL).

4.4 hydrochloride (11).

4.5 hydrochloride (14).

4.6 hydrochloric acid (595).

4.7 nitric acid (rho = 1.42g/mL).

4.8 nitric acid (150).

4.9 nitrate (15000).