Aurum element analyzing and detecting method in smelting material

A detection method and technology for gold elements, applied in the direction of color/spectral property measurement, etc., can solve the problems of difficult to master the analysis process, difficult to master the operation process, high labor intensity, etc. small effect

Inactive Publication Date: 2009-05-06
JIANGXI RARE EARTH & RARE METALS TUNGSTEN GRP
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  • Claims
  • Application Information

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Problems solved by technology

Because these enrichment and separation methods need expensive equipment, special materials, and a large amount of chemical reagents, the operation process is difficult to master, and the process is long and labor-intensive, such as the determination of gold by fire assay (national standard GB/T7739. 1-2007 Gold Concentrate Chemical An

Method used

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  • Aurum element analyzing and detecting method in smelting material
  • Aurum element analyzing and detecting method in smelting material
  • Aurum element analyzing and detecting method in smelting material

Examples

Experimental program
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Effect test

Embodiment

[0025] Embodiment: Analysis and detection of gold element in lead anode slime

[0026] draw standard curve

[0027] Get gold grains (Au≥99.99%) and add aqua regia to dissolve, and prepare a standard solution containing gold 10ug / ml, perform standard series measurement and draw a standard curve according to the method steps of the present invention. The specific operation process is: pipette 0.00ml, 1.00ml, 3.00ml, 5.00ml, 7.50ml, 10.00ml gold standard solution (1ml=10ug) in a series of 50ml volumetric flasks, add 5ml aqua regia, dilute with water, shake uniform. Use the atomic absorption spectrometer to measure the absorbance value of the standard series, draw the standard curve with the standard concentration as the abscissa and the absorbance value as the ordinate.

[0028] Sample Determination (Sample 30-4)

[0029] Weigh 10.00 grams of lead anode slime sample in a 400ml beaker, add 2 grams of tartaric acid, 200ml of nitric acid (4mol / L), and heat to dissolve completely....

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Abstract

The invention relates to a method for analyzing and detecting gold elements in smelting materials, which comprises the following steps: a sample is added into nitric acid or tartaric acid for heating pretreatment; the test solution is filtered by filter paper, and residue is fully transferred to the filter paper and is washed; the filter paper and the residue are put in a ceramic crucible and are put in a muffle furnace at a temperature of 750 DEG C for full incineration; fresh aqua fortis is added for dissolving and incinerating the residue at a low temperature; a combustion supporting ratio of 5:1, a slit of 0.2mm, a lamp current of 2mA and a negative high voltage of 300V are chosen, an atomic absorption spectrophotometer is used for determining the light absorption values of the gold elements, and results are calculated and analyzed. The method of the invention for analyzing the gold elements in the smelting materials has simplicity, convenience, easy implementation, short flow, small investment, high determination accuracy and good repeatability.

Description

technical field [0001] The present invention relates to the analysis and detection method of gold element, especially the analysis and detection method of gold element in smelting materials, which is applicable to the smelting of lead anode slime, lead-bismuth alloy, high-silver slag, crude lead, crude bismuth, crude silver, crude copper, etc. Analysis and detection of gold elements in materials. Background technique [0002] Among the existing analysis and detection methods of gold elements, the enrichment and separation of gold elements is an indispensable process, and there are various methods: fire assay gold method, activated carbon enrichment and separation method, foam plastic enrichment and separation method, ion exchange Enrichment and separation methods, etc. Because these enrichment and separation methods need expensive equipment, special materials, and a large amount of chemical reagents, the operation process is difficult to master, and the process is long and ...

Claims

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Application Information

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IPC IPC(8): G01N21/31
Inventor 梁玉兰刘文花李熙王小玲彭玲
Owner JIANGXI RARE EARTH & RARE METALS TUNGSTEN GRP
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