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Method for performing chemical separation, analysis and test on gold in antimony electrolyte

A chemical separation, analysis and testing technology, applied in the field of chemical analysis, can solve the problems affecting the quality of cathode antimony products, complex components of antimony electrolyte, high salt concentration, etc., and achieve the effect of reliable analysis and testing method, strong timeliness and simple operation

Active Publication Date: 2018-06-12
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The antimony electrolyte is mainly derived from the electrolytic refining process of antimony. The antimony electrolyte is generally dissolved in sodium hydroxide by dissolving antimony concentrate (mainly antimony sulfide, which contains gold, the main source of gold in the antimony electrolyte), sodium sulfide, etc. In the solution, polysulfide components will be produced during this process. Because of its strong oxidizing properties, gold is oxidized into ions and remains in the solution; since the antimony electrolyte is It is recycled, but when the electrolyte is used for a period of time, due to the high impurity ions accumulated in it, which affects the product quality of the cathode antimony, it is necessary to replace the antimony electrolyte; the precious metal gold contained in the replaced waste antimony electrolyte It needs to be recycled. At this time, it is necessary to know the exact content of gold in the waste antimony electrolyte; due to the complex components of the antimony electrolyte, high salt concentration, and high alkalinity, the existing traditional gold separation and enrichment and testing methods are not suitable for Antimony electrolyte samples are powerless

Method used

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  • Method for performing chemical separation, analysis and test on gold in antimony electrolyte
  • Method for performing chemical separation, analysis and test on gold in antimony electrolyte
  • Method for performing chemical separation, analysis and test on gold in antimony electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Accurately pipette 5.0mL antimony electrolyte sample into a 400mL beaker, flush with water to keep the volume of the solution at 20mL, add 4mol / L dilute hydrochloric acid dropwise, and adjust the solution H + The concentration is 0.5mol / L, and then heated to 120°C to boil the solution for 2 minutes to make the precipitate flocculate and reunite, then stand and filter;

[0019] (2) Put the precipitate filtered in (1) together with the filter paper into the original beaker, add 20mL sulfuric acid with a concentration of 18mol / L and heat it to 300-380°C for 10-20min. After the sulfuric acid solution becomes transparent, Remove and cool to 20°C, add water to dilute to 10mL, add 20mL of hydrochloric acid with a concentration of 12mol / L, heat to 100°C and boil the solution for 5 minutes to dissolve all the salts, remove and cool, and let stand and filter;

[0020] (3) Put the precipitate filtered in (2) together with the filter paper into a beaker, add 10mL of nitric-sulf...

Embodiment 2

[0023] (1) Accurately pipette 10.0mL antimony electrolyte sample into a 400mL beaker, add water to keep the volume of the solution at 30mL, then add 4mol / L dilute hydrochloric acid dropwise to adjust the solution H + The concentration is 1mol / L, and then heated to 100°C to boil the solution for 5 minutes to make the precipitate flocculate and reunite, then stand and filter;

[0024] (2) Put the precipitate filtered in (1) together with the filter paper into a beaker, add 20mL of sulfuric acid with a concentration of 18mol / L and heat it to 370°C for 15min. After the sulfuric acid solution is transparent, take it out and cool it to 23°C, add water to dilute to a volume of 20mL, add 20mL of hydrochloric acid with a concentration of 12mol / L, and heat to 130°C to boil the solution for 8 minutes to dissolve all the salts, then take it out to cool, and let it stand and filter;

[0025] (3) Put the precipitate filtered in (2) together with the filter paper into a beaker, add 15mL of n...

Embodiment 3

[0028] (1) Accurately pipette 20.0mL antimony electrolyte sample into a 400mL beaker, add water to keep the volume of the solution at 50mL, then add 4mol / L dilute hydrochloric acid dropwise to adjust the solution H + The concentration is 1mol / L, and then heated to 115 ° C to boil the solution for 3 minutes to make the precipitate flocculate and reunite, then stand and filter;

[0029] (2) Put the precipitate filtered in (1) together with the filter paper into a beaker, add 20mL of sulfuric acid with a concentration of 18mol / L and heat it to 380°C for 20min. After the sulfuric acid solution is transparent, take it out and cool it to 25°C, add water to dilute to a volume of 20mL, add 20mL of hydrochloric acid with a concentration of 12mol / L, and heat to 150°C and boil the solution for 10min to dissolve all the salts, then take it out to cool, and let it stand and filter;

[0030] (3) Put the precipitate filtered in (2) together with the filter paper into a beaker, add 20mL of ni...

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Abstract

The invention discloses a method for performing chemical separation, analysis and test on gold in antimony electrolyte. The method comprises the following steps: adjusting H<+> of a sample solution to0.5 to 1 mol / L by diluted 4 mol / L of hydrochloric acid, precipitating antimony in the sample solution in a form of sulfide, in the process, reducing gold ions in the solution into elemental gold to be adsorbed and wrapped in precipitate of antimony sulfide to achieve separating and enriching aims, boiling the solution, performing flocculation and aggregation on the precipitate, and filtering andremoving impurities; putting the precipitate together with filter paper into an original flask, adding concentrated sulfuric acid to treat the precipitate without drying by distillation, cooling aftera sulfuric acid solution is clear, pouring a small amount of water to dilute the sulfuric acid, adding hydrochloric acid to dissolve salt and filtering to remove the antimony; and putting the filterpaper and the precipitate into the original flask to perform digestive treatment, dissolving the salt by aqua regia, determining the volume and performing measurement by ICP-AES.

Description

technical field [0001] The invention belongs to chemical analysis technology, in particular to a chemical separation analysis test method for gold in antimony electrolyte. Background technique [0002] Gold is a soft, golden-yellow, corrosion-resistant precious metal with sulfophilic properties, often closely associated with sulfides such as pyrite, arsenopyrite, galena, stibnite, etc. , copper and other elements form intermetallic compounds; gold is one of the rarest, most precious and most valued metals. It is not only a special currency used for reserves and investment, but also an Important material in sectors such as the aviation industry. [0003] By consulting the literature, there are many analytical methods for gold in ores, beneficiation materials, and metallurgical materials, and there are many relevant national standards; there are few methods for the chemical separation, enrichment and analysis of gold in antimony electrolytes, almost Blank; At present, the an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/73G01N1/34G01N1/40
CPCG01N1/34G01N1/4044G01N1/4077G01N21/73G01N2001/4088
Inventor 王红燕王同敏赵海军李冠军方彦霞齐白羽展之旺路军兵张彦翠刘静静郑省政
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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