Quality identification method for lead powder of lead-acid storage battery raw material

The technology of a lead-acid battery and an identification method is applied in the field of quality identification of lead powder, a raw material of the lead-acid battery, and achieves the effects of simple processing process, simple method and fewer types of chemical reagents.

Inactive Publication Date: 2019-05-21
李彤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some manufacturers need to purchase lead powder, so the grade of electrolytic lead used in lead powder has become a doubt point of dispute between the supplier and the user

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0011] Embodiment: determine according to the following specific steps

[0012] 1. Take the lead powders from five manufacturers and the lead powders produced by the known 1# electrolytic lead as references, and the numbers are A, B, C, D, E, F respectively; take 150g of lead powders and place them in a 1000mL beaker, add 500mL sulfuric acid solution with a mass concentration of 5% is stirred, heated and boiled, the lead powder is dissolved, cooled, and the liquid is poured; add 500mL of a sulfuric acid solution with a mass concentration of 5%, stirred, heated and boiled, the lead precipitated in the lead powder forms a lump, cooled; take out For lead lumps, wash off the sulfuric acid on the surface with pure water, and quickly absorb the water on the surface of the lead lumps with filter paper;

[0013] 2. Put 30 grams of dry lead mass into a clean porcelain crucible, cover it, put it into a muffle furnace heated to 400°C in advance, seal it for 10 minutes, clamp the crucible...

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PUM

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Abstract

The invention discloses a quality identification method for lead powder of a lead-acid storage battery raw material, which is characterized by comprising the following steps of: dissolving the lead powder by using a sulfuric acid solution, taking out a residue lead cluster, and immediately absorbing water; under the closed high-temperature condition, melting the residues, and obtaining a pure metal block; detecting the bismuth content of the metal block. The detection method adopts atomic emission spectrometry or analyzes the bismuth content according to the national standard. The determination method provided by the invention is simple, easy to operate, capable of simultaneously analyzing and determining a plurality of samples, few in types of required chemical reagents and accurate and reliable in analysis result.

Description

technical field [0001] The invention relates to a detection method, in particular to a method for identifying the quality of lead powder, a raw material of a lead-acid storage battery. Background technique [0002] In the production of lead-acid battery plates, the lead powder used is an important semi-finished product, and the raw material used is required to be 1# electrolytic lead Pb99.994. Some manufacturers need to purchase lead powder, so the grade of electrolytic lead used in lead powder has become a doubtful point of dispute between the supplier and the user. Since the bismuth content is difficult to remove when electrolytic lead is smelted, the bismuth content is used as the symbolic impurity of the electrolytic lead brand. 1# electrolytic lead (Pb99.994) and 2# electrolytic lead (Pb99.990) or other brands, in addition to the great difference in price, the properties of lead powder are also different. Since the lead powder made of various grades of electrolytic le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/62
Inventor 李彤
Owner 李彤
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