Method for detecting copper phase in ore

A mineral and phase technology, applied in the field of analytical chemistry, can solve the problems of large error in measurement results, pollution of the environment and atmosphere, slow analysis speed, etc., and achieve the effect of good precision and accuracy, less interference, and improved analysis speed.

Inactive Publication Date: 2018-09-14
CHANGCHUN GOLD RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for measuring the phase of copper in ore to solve the existing problems of slow analysis speed, waste of reagents and time-consuming, serious pollution of the environment and atmosphere, and large errors in measurement results

Method used

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  • Method for detecting copper phase in ore
  • Method for detecting copper phase in ore
  • Method for detecting copper phase in ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Step 1. Weigh 0.5000g sample and record it as m 0 , put the sample in a 500mL beaker, add 1g of sodium sulfite, add 100mL of sulfuric acid with a concentration of (1+19), put the beaker on a magnetic stirrer, stir at room temperature for 1 hour, add 1g of sodium sulfite at any time during the stirring process, and use Quantitative fast filter paper filtration, wash the beaker with sulfuric acid with a concentration of (2+98) 3 times, wash the residue 5 times, put the residue together with the filter paper back into the original beaker for retention;

[0049] Step 2: Put the filtrate in a 500mL beaker, add 8mL hydrochloric acid, add 3mL nitric acid, evaporate the filtrate to dryness, cool, add 5mL hydrochloric acid for leaching, transfer to a 100mL volumetric flask, dilute to the mark with deionized water, record as V 1 , along with a reagent blank; dilute the above solution 5 times and record it as f 1 , at the wavelength of 324.8nm of the atomic absorption spectrophot...

Embodiment 2

[0093] Step 1. Weigh 0.8000g sample and record it as m 0 , put the sample in a 500mL beaker, add 1.5g sodium sulfite, add 100mL sulfuric acid with a concentration of (1+19), put the beaker on a magnetic stirrer, stir at room temperature for 1.5 hours, and add 1.5g sodium sulfite at any time during the stirring process , filter with quantitative fast filter paper, wash the beaker 3 times with sulfuric acid with a concentration of (2+98), wash the residue 6 times, and put the residue together with the filter paper back into the original beaker for retention;

[0094] Step 2: Put the filtrate in a 500mL beaker, add 9mL hydrochloric acid, add 4mL nitric acid, evaporate the filtrate to dryness, cool, add 8mL hydrochloric acid for leaching, transfer to a 100mL volumetric flask, dilute to the mark with deionized water, record as V 1 , along with a reagent blank; dilute the above solution 20 times and record it as f 1 , at the wavelength of 324.8nm of the atomic absorption spectropho...

Embodiment 3

[0138] Step 1. Weigh 1.0000g sample and record it as m 0 , put the sample in a 500mL beaker, add 2g of sodium sulfite, add 100mL of sulfuric acid with a concentration of (1+19), put the beaker on a magnetic stirrer, stir at room temperature for 2 hours, add 2g of sodium sulfite at any time during the stirring process, use Quantitative rapid filter paper filtration, wash the beaker with sulfuric acid with a concentration of (2+98) 4 times, wash the residue 6 times, put the residue together with the filter paper back into the original beaker for retention;

[0139] Step 2: Put the filtrate in a 500mL beaker, add 10mL hydrochloric acid, add 5mL nitric acid, evaporate the filtrate to dryness, cool, add 10mL hydrochloric acid for leaching, transfer to a 100mL volumetric flask, dilute to the mark with deionized water, record as V 1 , along with a reagent blank; dilute the above solution 50 times and record it as f 1 , at the wavelength of 324.8nm of the atomic absorption spectropho...

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Abstract

The invention relates to a method for detecting the copper phase in ore, and belongs to the field of analytical chemistry. According to the method, separation and detection of copper in copper oxide minerals, secondary copper sulfide minerals and primary copper sulfide minerals in the ore can be realized through one-step sample dissolution, atomic absorption spectrometry is adopted for detection,and detection precision and accuracy are high. The method has the advantages that final residues are not treated by nitric acid and sulfuric acid but burned into ash, and the copper in the primary copper sulfide minerals is detected by an atomic absorption spectrometer; the method is safe and environment friendly, analysis and testing time are shortened greatly, manpower and material resources aresaved, and good economic benefits are achieved.

Description

technical field [0001] The invention belongs to the field of analytical chemistry, in particular to a method for determining copper phases in ores by atomic absorption spectrometry (AAS), which is used for measuring copper oxide minerals, secondary copper sulfide minerals and primary copper sulfide minerals in copper phases thing. Background technique [0002] There are many kinds of the same minerals in nature, the common one is chalcocite [Cu 2 S], chalcopyrite [CuFe 2 S 3 ], Bornite [Cu 5 FeS 4 ], Tetrahedrite [Cu 12 Sb 4 S 13 ], bile alum [CuSO 4 ·5H 2 O], Malachite [CuCO 3 ·Cu(OH) 2 ], cuprite [Cu 2 O], natural copper [Cu°], copper arsenite [CuAsS 4 ] and so on; gangue minerals mainly include kaolin, quartz, mica minerals and a small amount of calcite, clay, etc.; other metal minerals as long as there are pyrite, marcasite and a small amount of limonite, galena, sphalerite, etc. Due to the composition of copper minerals and the fine and dispersed particle ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 苏广东刘正红陈永红洪博孟宪伟
Owner CHANGCHUN GOLD RES INST
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