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Method for rapid combined measurement of lead and zinc in copper smelting soot

A copper smelting soot, soot lead-zinc technology, which is applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions, can solve cumbersome operation steps, low work efficiency, and detection time cycle long wait question

Inactive Publication Date: 2016-04-06
巴彦淖尔市飞尚铜业有限公司
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Problems solved by technology

[0004] However, the above-mentioned process has defects such as cumbersome operation steps, long detection time period, and low work efficiency.

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  • Method for rapid combined measurement of lead and zinc in copper smelting soot
  • Method for rapid combined measurement of lead and zinc in copper smelting soot
  • Method for rapid combined measurement of lead and zinc in copper smelting soot

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Embodiment Construction

[0020] The method of the present invention will be further described below in combination with specific operation steps. It should be pointed out that this embodiment is only to further illustrate the present invention, without any limitation.

[0021] 1. Method Summary

[0022] After dissolving the sample with hydrochloric acid and nitric acid, use hydrobromic acid to eliminate the interference of arsenic, antimony and tin, and add potassium sulfate to the dilute sulfuric acid medium to make lead generate potassium sulfate-lead sulfate double salt precipitation with a lower solubility than lead sulfate ,filter. After the precipitate was dissolved in acetic acid-sodium acetate solution, lead was determined by EDTA titration; masking agent was added to the filtrate to eliminate the interference of copper, iron and aluminum plasma, and potassium iodide was added to eliminate the interference of cadmium element, and then zinc was determined by EDTA titration. This method analyze...

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Abstract

The present invention relates to a method for rapid combined measurement of lead and zinc in copper smelting soot. The method comprises the steps of: 1) dissolving: weighing a certain amount of copper smelting soot, moistening the soot with water, adding hydrochloric acid according to the weight to volume ratio of soot to hydrochloric acid being 1g / 50ml, heating at 200-300 DEG C for 2-3min, adding nitric acid in the same volume as hydrochloric acid, heating at 200-300 DEG C for 2-3 min; 2) precipitation: sulfuric acid and potassium sulfate for precipitation to obtain lead sulfate; 3) determination of lead; and 4) determination of zinc. The method of the present invention eliminates the interference of impurities, which cannot be eliminated in general lead and zinc combined measurement methods, simplifies the procedures, shortens the analysis time, eliminates the adsorption of zinc ions by the precipitate in the secondary filtration of the zinc detection process (lower zinc content has greater impact), avoids detection by means of equipment, improves the accuracy and efficiency, and reduces the costs.

Description

technical field [0001] The invention belongs to the field of copper smelting soot detection, and in particular relates to a process for rapid continuous detection of lead and zinc in copper smelting soot. Background technique [0002] There is no standard chemical analysis method for the analysis of existing copper smelting electric dust collection soot, and generally all are directly adopting the chemical analysis method of non-ferrous metal ore, such as the chemical analysis method of lead-zinc ore, copper concentrate, etc. (References: (1) Peng Ling; Rapid and continuous determination of lead and zinc in lead-zinc ores; Jiangxi Nonferrous Metals Vol. 24, No. 1; 2010.3; (2) Lin Daze; Zhang Yongde; Wu Min; Analysis of nonferrous metal ores and their beneficiation and smelting products; Metallurgical Industry Press; 2007.9). [0003] Due to the difference in chemical composition between copper smelting soot and lead-zinc ore and copper concentrate, it is defective to directl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
CPCG01N21/78
Inventor 王洋刘海霞
Owner 巴彦淖尔市飞尚铜业有限公司
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