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Method for determining content of silver, copper, lead and zinc elements in gold concentrate

A technology of element content and gold concentrate, applied in the field of analytical chemistry, can solve the problems of consumables, time-consuming, labor-intensive, etc., and achieve the effect of simplifying the experimental process, expanding the measurement range, and improving the accuracy

Inactive Publication Date: 2016-09-28
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 a method for determining the content of silver, copper, lead and zinc elements in gold concentrate to solve the problems of time-consuming, labor-consuming and consumables caused by separate sample dissolution

Method used

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  • Method for determining content of silver, copper, lead and zinc elements in gold concentrate
  • Method for determining content of silver, copper, lead and zinc elements in gold concentrate
  • Method for determining content of silver, copper, lead and zinc elements in gold concentrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] After crushing the sample, the particle size is 0.038-0.074mm. Dry the sample at 105°C for 1 hour, weigh 0.4992g of the sample, place the sample in a 250mL beaker, add a small amount of water to wet it, add 15mL of hydrochloric acid, and cover it with a watch glass. , heat at 100°C for 5 minutes, remove and cool slightly, then add 8 mL of nitric acid, dissolve for 10 minutes, add 3 mL of perchloric acid, continue heating until thick white smoke comes out, steam until wet salt, remove and cool, add 10 mL of hydrochloric acid, Rinse the cup wall and watch glass with water, heat to dissolve the salt, dilute the solution to a 100mL volumetric flask, dilute to the mark with pure water, mix well, and let it stand still for clarification. Along with the sample blank, it was determined by atomic absorption spectrometer.

[0028] Preparation of silver, copper, lead and zinc standard series with different gradients, see Table 1; constant volume solution to directly measure silver...

Embodiment 2

[0036] After crushing the sample, the particle size is 0.038-0.074mm. Dry the sample at 105°C for 1 hour, weigh 0.3525g of the sample, place the sample in a 250mL beaker, add a small amount of water to wet it, add 18mL of hydrochloric acid, and cover it with a watch glass. , heated at 100°C for 8 minutes, removed and cooled slightly, then added 9 mL of nitric acid, dissolved for 15 minutes, added 4 mL of perchloric acid, continued to heat until thick white smoke appeared, steamed to wet salt, removed and cooled, added 13 mL of hydrochloric acid, Rinse the cup wall and watch glass with water, heat to dissolve the salt, dilute the solution to a 100mL volumetric flask, dilute to the mark with pure water, mix well, and let it stand still for clarification. Along with the sample blank, it was determined by atomic absorption spectrometer.

[0037] Prepare silver, copper, lead and zinc standard series with different gradients, see Table 1; constant volume solution to directly measure...

Embodiment 3

[0043] After crushing the sample, the particle size is 0.038-0.074mm. Dry the sample at 105°C for 1 hour, weigh 0.2008g of the sample, place the sample in a 250mL beaker, add a small amount of water to wet it, add 20mL of hydrochloric acid, and cover it with a watch glass. , heat at 100°C for 10 minutes, remove and cool slightly, then add 10mL of nitric acid, dissolve for 20 minutes, add 5mL of hydrofluoric acid, add 5mL of perchloric acid, continue heating until thick white smoke comes out, steam until wet salt, remove Cool down, add 15mL hydrochloric acid, rinse the cup wall and watch glass with water, heat to dissolve the salt, dilute the solution to a 100mL volumetric flask, dilute to the mark with pure water, mix well, stand still and clarify, bring a sample blank with it, and use atomic absorption spectrometer to measure.

[0044] Prepare silver, copper, lead and zinc standard series with different gradients, see Table 1; constant volume solution directly measures the si...

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Abstract

The invention relates to a method for determining the content of silver, copper, lead and zinc elements in gold concentrate, and belongs to the field of analytical chemistry. The method comprises the steps that degradation is conducted on gold concentrate samples, the gold concentrate samples are subjected to smashing and drying, 0.2 g-0.5 g of samples are weighed, water is added for wetting, hydrochloric acid is added, a watch glass is used for covering, low-temperature heating is conducted for 5 min to 10 min, nitric acid is added, dissolution is conducted, perchloric acid is added, heating is conducted continuously till thick white smoke appears, steaming is conducted till the samples are shaped like wet salt, the samples are taken down for cooling, hydrochloric acid is added, the beaker wall and the watch glass are washed with water, heating is conducted to dissolve salts, a solution is added to the scale volume of a 100 mL volumetric flask, dilution is conducted with pure water to the scale, mixing is conducted to be uniform, and standing and clarifying are conducted; continuous determining is conducted on the silver, copper, lead and zinc elements in the gold concentrate. The method for determining the content of the silver, copper, lead and zinc elements in the gold concentrate has the advantages that the silver, copper, lead and zinc elements in the gold concentrate are continuously determined, the experimental processes are simplified, the method is simple, the detection speed is high, the experiment cost is reduced, conservation and environmental protection are achieved, the measurement range is widened, and the accuracy of determination of the silver, copper, lead and zinc elements in the gold concentrate is improved.

Description

technical field [0001] The invention belongs to the field of analytical chemistry, in particular to an atomic absorption spectrometry (AAS) for the continuous determination of silver (10g / t-1000g / t), copper (0.050%-0.30%), lead (0.50%-6.00%) in gold concentrate ), zinc (0.10% ~ 2.00%) element content method. Background technique [0002] There are many methods for the determination of silver, copper, lead, and zinc in gold concentrate. Most of them use separate sample dissolution methods, which are time-consuming, labor-intensive and consumable. Therefore, a method for continuous determination of silver and copper in gold concentrate is developed. , lead, and zinc elements are the future development trend. Volumetric and instrumental methods are often used for the determination and analysis of gold concentrate samples. The instrumental method is usually used for the determination of low-content samples in samples, and the volumetric method is used for the determination of h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N1/28G01N1/44
CPCG01N21/31G01N1/28G01N1/44G01N21/3103
Inventor 苏广东刘正红杨凤萍姜莹孟宪伟
Owner CHANGCHUN GOLD RES INST
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