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Method for measuring content of indium in zinc concentrate

A technology for indium content and zinc concentrate, which is applied in the measurement of color/spectral characteristics, etc., can solve the problems of high cost, inaccurate results, and complicated methods for determining indium content, and achieves low cost, accurate results, and avoids repeated analysis. Effect

Inactive Publication Date: 2015-04-29
WESTERN MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of complex operation, high cost and inaccurate results of the existing methods for measuring indium content, and propose a method for measuring indium content in zinc concentrates

Method used

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  • Method for measuring content of indium in zinc concentrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Weigh 5 parts of 0.25g sample into a 250mL beaker, add 0, 10, 20, 40, 80μg indium standard in turn, add 15mL hydrochloric acid, cover the watch glass, heat at low temperature for 5-7 minutes to make the sulfur in the sample convert to hydrogen sulfide Form is volatilized, add 5mL nitric acid, 5mL perchloric acid, cover the watch glass, steam until it becomes a wet salt like smoke, cool, add 10mL of 5% nitric acid solution accurately, warm for a while to dissolve the salt, cool, dry filter Solution, the absorbance value is measured according to the optimized conditions selected by the instrument, the absorbance value is the independent variable, and the concentration corresponding to the added indium standard solution is the dependent variable. Through the CORREL and INTERCEPT functions in the EXCEL software, the correlation coefficient r and the intercept value b in the group of measurements are calculated respectively, and the volume of the solution is multiplied by b a...

Embodiment 2

[0044] Weigh 4 parts of 0.5g sample into a 250mL beaker, add 0, 10, 20, 30μg indium standard in turn, add 15mL hydrochloric acid, cover the watch dish, heat at low temperature for 5-7 minutes to volatilize the sulfur in the sample in the form of hydrogen sulfide , add 5mL of nitric acid and 5mL of perchloric acid, cover the watch dish, steam until the smoke becomes wet salt, cool, add 10mL of 5% nitric acid solution, warm for a while to dissolve the salt, cool, and use 5% volume fraction Dilute the nitric acid solution to a 50 mL volumetric flask, and mix well. Take the dry filtered solution, and measure the absorbance value according to the optimized conditions selected by the instrument. The absorbance value is the independent variable, and the concentration corresponding to the added indium standard solution is the dependent variable. Through the CORREL and INTERCEPT functions in the EXCEL software, the correlation coefficient r and the intercept value b in the group of mea...

Embodiment 3

[0046] This implementation example illustrates the determination result of this method to the relatively high content of indium in zinc concentrate.

[0047] Weigh 4 parts of 0.5000g sample into a 250mL beaker, add 0, 40, 80, 120μg indium standard in turn, add 15mL hydrochloric acid, cover the watch glass, heat at low temperature for 5-7 minutes to volatilize the sulfur in the sample in the form of hydrogen sulfide , add 5mL of nitric acid and 5mL of perchloric acid, cover the watch dish, steam until the smoke becomes wet salt, cool, accurately add 10mL of 5% volume fraction of nitric acid solution, warm for a while to dissolve the salt, cool, and use 5% volume Dilute the fraction of nitric acid solution to a 50 mL volumetric flask, and mix well. Dry filter the solution, measure the absorbance value according to the optimized conditions selected by the instrument, take the absorbance value as the independent variable, and the concentration corresponding to the added indium sta...

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Abstract

The invention belongs to the technical field of processing of mineral resources and smelting of nonferrous metals, and particularly relates to a method for measuring content of indium in zinc concentrate. The method comprises the following steps: 1) weighing N samples to be measured with the same mass, labeling 1 to N, and adding indium into the samples (2-N) to be measured, wherein the mass of the indium added to the samples increases progressively according to an equal mass, and N is an integer more than 2; 2)adding hydrochloric acid into the N samples to be measured, and then adding nitric acid and perchloric acid, steaming till smoking into a wet salt status, and then adding warm saltpeter solution to obtain N sample solutions to be measured; 3) obtaining the light absorption value of the N sample solutions to be measured; and 4) based on the intercept of a linear regression function of indium concentration C and light absorption value A of the N sample solutions to be measured, obtaining the content of indium in the samples to be measured. The method for measuring content of indium in zinc concentrate has the advantages of high simplicity in operation, low cost, accurate result, high accuracy, environment-friendly property and the like.

Description

technical field [0001] The invention belongs to the technical field of mineral resource processing and nonferrous metal smelting, and in particular relates to a method for measuring indium content in zinc concentrate. Background technique [0002] In order to improve the comprehensive utilization of indium resources, it is necessary to detect the indium content in zinc concentrate, the product of lead-zinc beneficiation, so as to better control the process and parameters of beneficiation and zinc smelting. [0003] The commonly used methods for determining indium content are atomic absorption spectrophotometry, polarography and extraction-spectrophotometry. The above-mentioned methods require complicated pretreatment steps such as extraction, washing and necessary backwashing before using corresponding instruments for measurement. The operation is complicated, the cost is high, and it will cause environmental pollution. In addition, the standard curve needs to be determined ...

Claims

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Application Information

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IPC IPC(8): G01N21/31
Inventor 吴敏王洪何菱刘焕德李永芳
Owner WESTERN MINING CO LTD
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