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Method for rapidly determining silver content in copper ore

A technology for rapid determination of copper ore, applied in measurement devices, preparation of test samples, measurement of color/spectral characteristics, etc., can solve the problems of high testing cost, unfriendly environment, and long time consumption, and improve testing efficiency. , the procedures are complicated and time-consuming

Pending Publication Date: 2022-05-24
湖北三鑫金铜股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This method can effectively determine the silver content in mineral samples, but in the process of determination, the sample has to be decomposed by nitric acid, perchloric acid, and hydrochloric acid. The procedures are complicated and time-consuming, which is prone to errors. Moreover, the test cost is high, and a lot of waste gas will be generated during the reaction process, which is not friendly to the environment.

Method used

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  • Method for rapidly determining silver content in copper ore
  • Method for rapidly determining silver content in copper ore
  • Method for rapidly determining silver content in copper ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take copper ore sample F-1, pulverize it through a 200-mesh sieve, dry it at 150°C for 1 hour, weigh 0.5g of the treated sample into a 250ml beaker, wet it with a small amount of water, add 8ml of perchloric acid, and heat Dissolve and evaporate to about 1ml of solution, and let stand to cool; then rinse the wall of the cup with water and add thiourea solution according to the standard in Table 1, heat to dissolve the solid substance, and after cooling, transfer the solution to a 100ml volumetric flask to constant volume, and put it in the atomic absorption chamber. After standing for two hours, atomic absorption spectrometry was carried out after clarification.

[0026] Table 1

[0027]

[0028]

Embodiment 2

[0030] Take the copper ore sample F-3, crush it through a 200-mesh sieve, dry it at 150°C for 1 hour, weigh 0.5g of the treated sample into a 250ml beaker, wet it with a small amount of water, add 8ml of perchloric acid, and heat Dissolve and evaporate to about 1ml of solution, and let stand to cool; then rinse the wall of the cup with water and add thiourea solution according to the standard in Table 1, heat to dissolve the solid substance, and after cooling, transfer the solution to a 100ml volumetric flask to constant volume, and put it in the atomic absorption chamber. After standing for two hours, atomic absorption spectrometry was carried out after clarification.

Embodiment 3

[0032] Take the copper ore sample F-11, crush it through a 200-mesh sieve, dry it at 150°C for 1 hour, weigh 0.5g of the treated sample into a 250ml beaker, wet it with a small amount of water, add 8ml of perchloric acid, and heat Dissolve and evaporate to about 1ml of solution, and let stand to cool; then rinse the wall of the cup with water and add thiourea solution according to the standard in Table 1, heat to dissolve the solid substance, and after cooling, transfer the solution to a 100ml volumetric flask to constant volume, and put it in the atomic absorption chamber. After standing for two hours, atomic absorption spectrometry was carried out after clarification.

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Abstract

The invention discloses a method for rapidly determining the content of silver in copper ore. The method comprises the steps of sample treatment, solution preparation, reaction dissolution and determination. According to the method, the thiourea medium is used for atomic absorption spectrometry measurement, and compared with an original flame atomic absorption spectrometry measurement mode, sample pretreatment is easy and convenient, the sample pretreatment difficulty is greatly reduced, the measurement time is short, harmful gas generated in the measurement process is reduced, the detection efficiency is improved, and meanwhile environmental protection is better facilitated; the variety and dosage of reagents used in the determination process are less, and the test cost is low.

Description

technical field [0001] The invention relates to the technical field of ore determination, and relates to a method for rapidly determining silver content in copper ore. Background technique [0002] In the metal mining industry, accurate determination of silver content in ores and concentrates is of great significance for guiding production and operation. The classical chemical analysis method for the determination of silver content is the determination of silver by flame atomic absorption spectrometry. The sample is dissolved in nitric acid, perchloric acid and hydrochloric acid. The absorbance of silver was measured by flame, the background absorption was deducted, and the amount of silver was calculated according to the standard curve. [0003] This method can effectively determine the silver content in mineral samples, but in the process of determination, the sample must be decomposed by nitric acid, perchloric acid, and hydrochloric acid. The procedures are complicated,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N1/38G01N1/28
CPCG01N21/3103G01N1/38G01N1/28G01N2001/386Y02P10/20
Inventor 陈东志张方琼曹树生刘恒柏朱江
Owner 湖北三鑫金铜股份有限公司
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