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Efficient accurate continuous measurement method for lead and zinc in lead concentrate and gold concentrate

A method of determination, technology of lead concentrate, applied in the direction of measuring device, color/spectral characteristic measurement, material analysis by observing the influence of chemical indicators, etc., can solve the problem of low lead content, inability to develop color, lead-zinc titration process long wait question

Active Publication Date: 2016-10-26
CHANGCHUN GOLD RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an efficient and accurate continuous determination method for lead and zinc in lead concentrate and gold concentrate to solve the problems of long lead-zinc continuous titration process, narrow test range, high cost, low lead content and inability to develop color

Method used

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  • Efficient accurate continuous measurement method for lead and zinc in lead concentrate and gold concentrate
  • Efficient accurate continuous measurement method for lead and zinc in lead concentrate and gold concentrate
  • Efficient accurate continuous measurement method for lead and zinc in lead concentrate and gold concentrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] (1) Weigh 0.27 grams of sample, put it in a 400ml beaker, add a small amount of water to moisten it, add 20ml of saturated nitric acid-potassium chlorate solution, cover with a watch glass, and heat it on an electric furnace to NO 2 The smoke is exhausted, and the sample is completely digested;

[0114] (2) Take off the beaker to cool down slightly, add 10ml H 2 SO 4 , put it on the electric stove to heat, steam until white smoke is emitted for 2 minutes, remove the beaker to cool, add 90ml of water, put it on the electric stove, heat to boiling, and boil slightly for 10 minutes;

[0115] (3) Remove the beaker, add 5ml of N,N-dimethylformamide, and let stand for 1 hour;

[0116] (4) Use double-layer quantitative filter paper to filter, use sulfuric acid lotion (2+98) to wash the precipitate, put the washed filter paper and precipitate into the original beaker, add 100ml of acetic acid-sodium acetate buffer solution in the beaker in advance, put Heat it on an electric...

Embodiment 2

[0123] (1) Weigh 0.28 grams of sample, put it in a 400ml beaker, add a small amount of water to moisten it, add 20ml of saturated nitric acid-potassium chlorate solution, cover with a watch glass, and heat it on an electric furnace to NO 2 The smoke is exhausted, and the sample is completely digested;

[0124] (2) Take off the beaker to cool down slightly, add 10ml H 2 SO 4 , put it on the electric stove to heat, steam until white smoke is emitted for 3 minutes, remove the beaker to cool, add 90ml of water, put it on the electric stove and heat to boiling, and boil slightly for 10 minutes;

[0125] (3) Remove the beaker, add 5ml of N,N-dimethylformamide, and let stand for 1 hour;

[0126] (4) Use double-layer quantitative filter paper to filter, use sulfuric acid lotion (2+98) to wash the precipitate, put the washed filter paper and precipitate into the original beaker, add 100ml of acetic acid-sodium acetate buffer solution in the beaker in advance, put Heat it on an electri...

Embodiment 3

[0133] (1) Weigh 0.30 grams of sample, put it in a 400ml beaker, add a small amount of water to moisten it, add 20ml of saturated nitric acid-potassium chlorate solution, cover with a watch glass, and heat it on an electric furnace to NO 2 The smoke was exhausted, and the sample was completely digested.

[0134] (2) Take off the beaker to cool down slightly, add 10ml H 2 SO 4 , put it on the electric stove to heat, steam until white smoke is emitted for 5 minutes, remove the beaker to cool, add 90ml of water, put it on the electric stove, heat to boiling, and boil slightly for 10 minutes;

[0135] (3) Remove the beaker, add 5ml of N,N-dimethylformamide, and let stand for 1 hour;

[0136] (4) Use double-layer quantitative filter paper to filter, use sulfuric acid lotion (2+98) to wash the precipitate, put the washed filter paper and precipitate into the original beaker, add 100ml of acetic acid-sodium acetate buffer solution in the beaker in advance, put Heat it on the elect...

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Abstract

The invention relates to an efficient accurate continuous measurement method for lead and zinc in lead concentrate and gold concentrate, in particular to a continuous measurement method for lead and zinc in ore analysis. A saturated nitric acid-potassium chlorate solution is used for decomposing samples, PbSO4 deposit is formed by H2SO4 and Pb and separated from the zinc, and the deposit is dissolved by an acetic acid-sodium acetate buffer solution and used for measuring the content of the lead. After the influence of interference elements on filtrate is eliminated by a chemical masking method, the total quantity of the zinc and cadmium is measured by an EDTA (ethylene diamine tetraacetic acid) volumetric method, and the content of the cadmium is measured by atomic absorption and subtracted from the total quantity to obtain the content of the zinc. The efficient accurate continuous measurement method has the advantages that experimental accuracy can be improved, experimental procedures are simplified, operation is facilitated, mass operation of the samples can be realized, and working efficiency is improved.

Description

technical field [0001] The invention relates to a continuous determination method for lead and zinc in ore analysis, in particular to a continuous determination method for lead and zinc in lead concentrate and gold concentrate. Background technique [0002] There are many separate determination methods for lead and zinc in lead concentrate and gold concentrate. There are corresponding separate determination methods for lead concentrate and gold concentrate in the national standard, GB / T8152.1-2006 Chemical analysis method for lead concentrate Determination of lead content Acid dissolution-EDTA titration method, GB / T8152.4-2006 Method for chemical analysis of lead concentrates Determination of zinc content EDTA titration method, GB / T7739.5-2007 Methods for chemical analysis of gold concentrates Part 5: Lead Determination of zinc content, GBT7739.6-2007 Methods for Chemical Analysis of Gold Concentrate Part 6: Determination of zinc content. [0003] However, in actual product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N21/79
CPCG01N21/3103G01N21/79
Inventor 葛仲义孟宪伟高振广颜凯刘正红
Owner CHANGCHUN GOLD RES INST
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