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A rapid determination method and rapid detection method for the availability of natural discharge manganese powder for zinc-manganese batteries

A determination method and technology for discharging manganese powder, which are applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of no atomic absorption spectrophotometer, uncertainty of composition and content, and inability to give results in time. It is easy to guide production, good detection effect, and low test conditions.

Active Publication Date: 2021-09-03
SICHUAN HUAJING GUOMAO INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The content of harmful impurities is particularly important, which is related to whether the batch of materials can be used. However, there are many soluble harmful impurity elements in the natural discharge manganese powder, which takes a long time to detect and requires more testing equipment. In fact, most of the zinc Manganese dry battery manufacturers are unable to afford these testing equipment, let alone atomic absorption spectrophotometers, and specifying inspection or using traditional chemical analysis methods, not only the process is complicated, time-consuming, and the results cannot be given in time, what's more, different mine sites and different batches The composition and content of harmful impurities in natural discharge manganese powder are uncertain

Method used

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  • A rapid determination method and rapid detection method for the availability of natural discharge manganese powder for zinc-manganese batteries
  • A rapid determination method and rapid detection method for the availability of natural discharge manganese powder for zinc-manganese batteries
  • A rapid determination method and rapid detection method for the availability of natural discharge manganese powder for zinc-manganese batteries

Examples

Experimental program
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Effect test

Embodiment 1

[0128] The factory feeds natural discharge manganese powder A, after element content detection, MnO 2 The Fe content is 50.11%, the total Fe content is 9.18%, the soluble Fe content is 0.01%, the Cu content is 0.0001%, and the soluble heavy metal (calculated as Pb) is 0.001%. The content meets the content requirements of natural discharge manganese powder for making zinc-manganese dry batteries.

[0129] Take the qualified electrolyte (ZnCl 2 16.8%+NH 4 Cl22.5%) 60ml, add 20g of sample A, stir continuously for 0.5h, filter with qualitative filter paper, add the filtrate to the surface-treated bright zinc sheet and heat to boiling on the electric furnace, slightly boil at about 103°C for 30min, take out the zinc sheet, and water Wash it, observe the surface of the zinc sheet is slightly grayish yellow, it can be used. It is consistent with the conclusion of element content detection.

[0130] At the same time, according to the requirements of the national standard "GB T889...

Embodiment 2

[0134] The factory feeds natural discharge manganese powder A, after element content detection, MnO 2 The Fe content is 50.11%, the total Fe content is 9.18%, the soluble Fe content is 0.01%, the Cu content is 0.0001%, and the soluble heavy metal (calculated as Pb) is 0.001%. The content meets the content requirements of natural discharge manganese powder for making zinc-manganese dry batteries.

[0135] Take the qualified electrolyte (ZnCl 2 16.8%+NH 4 Cl22.5%) 60ml, add 20g of sample A, stir continuously for 1.0h, filter with qualitative filter paper, add the filtrate to the surface-treated bright zinc flakes and heat to boiling on the electric furnace, slightly boil at about 103°C for 30min, take out the zinc flakes, and water Wash it, observe that the surface of the zinc sheet is grayish-yellow, and it can be used. It is consistent with the conclusion of element content detection.

[0136] At the same time, according to the requirements of the national standard "GB T8...

Embodiment 3

[0140] The factory feeds natural discharge manganese powder A, after element content detection, MnO 2 The Fe content is 50.11%, the total Fe content is 9.18%, the soluble Fe content is 0.01%, the Cu content is 0.0001%, and the soluble heavy metal (calculated as Pb) is 0.001%. The content meets the content requirements of natural discharge manganese powder for making zinc-manganese dry batteries.

[0141] Take the qualified electrolyte (ZnCl 2 16.8%+NH 4 Cl22.5%) 60ml, add 20g of sample A, stir continuously for 1.5h, filter with qualitative filter paper, add the filtrate to the surface-treated bright zinc sheet and heat it to boiling on the electric furnace, slightly boil at about 103°C for 30min, take out the zinc sheet, and water Wash it, observe that the surface of the zinc sheet is grayish-yellow, and it can be used. It is consistent with the conclusion of element content detection.

[0142] At the same time, according to the requirements of the national standard "GB T...

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Abstract

The invention provides a method for judging the availability of natural discharge manganese powder, comprising the following steps, firstly combining natural discharge manganese powder and ZnCl 2 ‑NH 4 The Cl solution is mixed and filtered to obtain the filtrate; then the zinc flakes are placed in the filtrate obtained in the above steps and heated to boiling to obtain zinc flakes with surface characteristics; finally, the availability of natural discharge manganese powder is determined according to the surface characteristics of the zinc flakes . This is a very simple, fast, and low-cost method for determining the availability of natural discharge manganese powder. It can quickly determine the level of harmful heavy metal impurities in natural discharge manganese powder, so as to determine whether the natural discharge manganese powder can be used in battery production. The invention judges the surface properties of the treated zinc flakes, and can comprehensively judge the content of harmful heavy metal impurities in the natural discharge manganese powder. The promotion and application of industrialization has important practical significance.

Description

technical field [0001] The invention belongs to the technical field of production of zinc-manganese dry batteries, and relates to an availability determination method and an availability detection method of naturally discharged manganese powder, and in particular to a rapid determination method and a rapid detection method of the availability of natural discharge manganese powder for zinc-manganese batteries. Background technique [0002] Chemical power sources can be divided into three types: primary batteries, secondary batteries (also known as storage batteries) and fuel cells. Primary batteries are batteries that are discarded after being used once. Among them, the most commonly used primary batteries are zinc-manganese dry batteries, also known as Carbon battery, full name of neutral zinc-manganese dioxide dry battery (zinc-manganese dry battery), is a primary battery with manganese dioxide as the positive electrode, zinc as the negative electrode, and ammonium chloride ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78G01R31/385
CPCG01N21/78
Inventor 孙军
Owner SICHUAN HUAJING GUOMAO INDAL