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Method for measuring contents of tribasic lead sulfate (3BS) and tetrabasic lead sulfate (4BS) in curing product by X-ray diffraction (XRD) external standard method

A solidified product, X-ray technology, applied in the field of detection, to achieve the effect of accurate and effective detection method, accurate quantitative analysis, and simple qualitative analysis

Inactive Publication Date: 2014-12-24
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method to solve the problem that there are few methods for measuring the content of 3BS and 4BS in the cured product, and because the problem of peak overlap is not solved, the K value provided by the standard card library is used to measure the content of 3BS and 4BS is extremely inaccurate. A convenient, simple, high-accuracy X-ray diffraction external standard method for determining the content of 3BS and 4BS in the cured products of lead-acid battery plates

Method used

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  • Method for measuring contents of tribasic lead sulfate (3BS) and tetrabasic lead sulfate (4BS) in curing product by X-ray diffraction (XRD) external standard method
  • Method for measuring contents of tribasic lead sulfate (3BS) and tetrabasic lead sulfate (4BS) in curing product by X-ray diffraction (XRD) external standard method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Zhengban paste: 1000kg of lead powder and 86kg of sulfuric acid, wherein the oxidation degree of lead powder is 75%, and the mass fraction of sulfuric acid is 50%.

[0025] After curing, the main components of the lead paste are PbO, 3BS (3PbO·PbSO 4 ·H 2 O) and 4BS (4PbO PbSO 4 ), moisture and free lead content are very small and negligible.

[0026] Assuming that the cured product does not generate 4BS, the components of the lead paste are PbO and 3BS, and the 3BS content after curing is 40.9%.

[0027] Assuming that the cured product does not generate 3BS, the composition of the lead paste is PbO and 4BS, and the content of 4BS after curing is 49.7%. In the actual curing process, the cured product is usually PbO, 3BS or PbO, 3BS, 4BS, so the cured product contains 3BS and 4BS. The total content of 4BS is between 40.9% and 49.7%, and the content of PbO is between 50.3% and 59.1%.

[0028] Drawing of the standard curve: In order to make the scope of the standard cu...

Embodiment 2

[0031] Zhengban paste: 1000kg of lead powder and 86kg of sulfuric acid, wherein the oxidation degree of lead powder is 75%, and the mass fraction of sulfuric acid is 50%.

[0032] After curing, the main components of the lead paste are PbO, 3BS (3PbO·PbSO 4 ·H 2 O) and 4BS (4PbO PbSO 4 ), moisture and free lead content are very small and negligible.

[0033] Assuming that the cured product does not generate 4BS, the components of the lead paste are PbO and 3BS, and the 3BS content after curing is 40.9%.

[0034] Assuming that the cured product does not generate 3BS, the composition of the lead paste is PbO and 4BS, and the content of 4BS after curing is 49.7%. In the actual curing process, the cured product is usually PbO, 3BS or PbO, 3BS, 4BS, so the cured product contains 3BS and 4BS. The total content of 4BS is between 40.9% and 49.7%, and the content of PbO is between 50.3% and 59.1%.

[0035] Drawing of the standard curve: In order to make the scope of the standard cu...

Embodiment 3

[0038] Zhengban paste: 1000kg of lead powder and 86kg of sulfuric acid, wherein the oxidation degree of lead powder is 75%, and the mass fraction of sulfuric acid is 50%.

[0039] After curing, the main components of the lead paste are PbO, 3BS (3PbO·PbSO 4 ·H 2 O) and 4BS (4PbO PbSO 4 ), moisture and free lead content are very small and negligible.

[0040] Assuming that the cured product does not generate 4BS, the components of the lead paste are PbO and 3BS, and the 3BS content after curing is 40.9%.

[0041] Assuming that the cured product does not generate 3BS, the composition of the lead paste is PbO and 4BS, and the content of 4BS after curing is 49.7%. In the actual curing process, the cured product is usually PbO, 3BS or PbO, 3BS, 4BS, so the cured product contains 3BS and 4BS. The total content of 4BS is between 40.9% and 49.7%, and the content of PbO is between 50.3% and 59.1%.

[0042] Drawing of the standard curve: In order to make the scope of the standard cu...

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Abstract

The invention relates to a method for measuring the contents of tribasic lead sulfate (3BS) and tetrabasic lead sulfate (4BS) in a curing product by an X-ray diffraction (XRD) external standard method. The method comprises the steps of carrying out qualitative analysis and content estimation on the curing product, drawing standard curves by the external standard method, measuring the content of the curing product, taking a cured pole plate, grinding, carrying out sample preparation, measuring the diffraction peaks to be measured of the 3BS and the 4BS by an X-ray diffraction instrument, recording the integrated intensity of the diffraction peaks to be measured of the 3BS (or 4BS), and finding the contents of the 3BS and the 4BS respectively on the standard curves of the 3BS and the 4BS. The method is simple and convenient in qualitative analysis and accurate in quantitative analysis, the error is less than 1-2.5%, and a simple, rapid, accurate and effective detection method is provided for solving the problem that the contents of the 3BS and the 4BS in the curing product are hard to accurately measure.

Description

technical field [0001] The invention relates to a detection method, in particular to a method for measuring the contents of 3BS and 4BS in the cured product of lead-acid battery plates by an external standard method of X-ray diffraction. Background technique [0002] Lead-acid battery (Lead-acid battery) electrodes are mainly made of lead and its oxides, and the electrolyte is a battery of sulfuric acid solution. Since the French G.Plante invented the lead-acid battery in 1859, it has experienced nearly 150 years of development. Great progress has been made, whether it is in transportation, communication, electric power, military or in various economic fields of navigation and aviation, lead-acid batteries have played an indispensable and important role. In recent years, with the acceleration of urbanization and the expansion of city limits, the traffic flow has increased dramatically. Although automobiles and other means of transportation are developing rapidly, due to th...

Claims

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Application Information

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IPC IPC(8): G01N23/20
Inventor 万南红代少振徐丹
Owner CHAOWEI POWER CO LTD
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