CN101907550A - Method for measuring degree of oxidation of lead powder - Google Patents
Method for measuring degree of oxidation of lead powder Download PDFInfo
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- CN101907550A CN101907550A CN 201010250854 CN201010250854A CN101907550A CN 101907550 A CN101907550 A CN 101907550A CN 201010250854 CN201010250854 CN 201010250854 CN 201010250854 A CN201010250854 A CN 201010250854A CN 101907550 A CN101907550 A CN 101907550A
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- lead powder
- oxidation
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- dissolving
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Abstract
The invention discloses a method for measuring the degree of oxidation of lead powder. The method comprises the following steps of: taking a lead powder sample of which the weight is M1; dissolving the lead powder sample with a dissolving agent having a preset concentration ratio; dissolving for a preset period of time, filtering, taking a solid out and recording the weight of the dried solid as M2; and calculating the degree of oxidation of lead powder, wherein the degree of oxidation of lead powder is equal to (M1-M2)/M1*100%. Compared with the prior art, the measuring method provided by the invention has the advantages of low professional requirement, a few used reagents, short measuring time, simpleness and rapidness.
Description
Technical field
The present invention relates to the battery technology field, be specifically related to a kind of measuring method of degree of oxidation of lead powder.
Background technology
In the accumulator manufacture process, lead powder is as the initial form of the manufacturing process of lead-acid accumulator, and its architectural feature has determined the performance of lead-acid accumulator, and is important as gene.So the stable and consistent of lead powder has very important influence to the performance of battery.
The method of measuring the oxidizability use at present is generally: lead powder sampling 0.25-0.35g, accurately be accurate to 4 decimals, go out massicot in the lead powder with 5% acetate dissolution, add ammonium acetate, a hexamethylenetetramine adjustment pH value of solution value, add xylenol orange as indicator, with EDTA (ethylenediamine tetraacetic acid is commonly called as edetic acid(EDTA)) standard solution titration, calculate oxidizability.The reagent that this measuring method is used is many, operates strongly professionally, and the time spent is many, is not suitable for online detection, generally can only be in the laboratory by specialty analysis personnel complete operation.
Summary of the invention
The main technical problem to be solved in the present invention is, a kind of measuring method of degree of oxidation of lead powder is provided, and measures simple and easy quick.
For solving the problems of the technologies described above, the invention provides a kind of measuring method of degree of oxidation of lead powder, comprise step:
Getting weight is the lead powder sample of M1;
Adopt the lytic agent of predetermined concentration ratio to dissolve described lead powder sample;
After the dissolving schedule time, filter the solids that takes out after dissolving, remember that the dried weight of described solids is M2;
Calculate degree of oxidation of lead powder, degree of oxidation of lead powder equals
Preferably, described lytic agent is an acetic acid.
Preferably, the described predetermined concentration of described acetic acid is than being the weight concentration ratio of 8%-10%.
Preferably, the schedule time of described dissolving is 3-5 minute.
Preferably, described gravimetric value M1, M2 are accurate to behind the radix point 3.
Preferably, described drying is oven dry.
The invention has the beneficial effects as follows: compared with prior art, measuring method provided by the invention is professional less demanding, uses reagent few, and Measuring Time is short, and is simple and easy quick.
Description of drawings
Fig. 1 is a kind of examples measure method flow diagram provided by the invention.
Embodiment
In conjunction with the accompanying drawings the present invention is described in further detail below by embodiment.
Lead powder is that its purity can reach more than 99.994% by pure plumbous preparation, lead powder consist of massicot and lead.So the amount of massicot can be judged by the amount of lead.
See also shown in Figure 1ly, the measuring method that present embodiment provides comprises step:
Step S1: get lead powder sample 0.5-1.5g, in order to calculate accurately, weight is accurate to 3 decimals, and weight is M1.
Step S2: the acid solution that adopts the finite concentration ratio is as lytic agent, in the present embodiment preferred weight concentration ratio be the acetic acid 17-23ml of 8%-12% as lytic agent, because of massicot and acetic acid chemical reaction are rapid, can all dissolve in about 5 minutes and finish.
Step S3: the solids after will dissolving filters and takes out, and oven dry claims its weight, is designated as M2, is accurate to 3 decimals.
Step S4: calculate the oxidizability of lead powder, formula is:
Through the mass data comparison, the degree of oxidation of lead powder that this method of testing records is generally the 0.9%-1.1% of actual value.The range of control of standard code requires to be standard value ± 5%, after the suitably adjustment standard of employing the method, can be used for the On-line Control in the lead powder manufacture process.
Above content be in conjunction with concrete embodiment to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (6)
1. the measuring method of a degree of oxidation of lead powder is characterized in that, comprises step:
Getting weight is the lead powder sample of M1;
Adopt the lytic agent of predetermined concentration ratio to dissolve described lead powder sample;
After the dissolving schedule time, filter the solids that takes out after dissolving, remember that the dried weight of described solids is M2;
Calculate degree of oxidation of lead powder, degree of oxidation of lead powder equals
2. the method for claim 1 is characterized in that, described lytic agent is an acetic acid.
3. method as claimed in claim 2 is characterized in that, the described predetermined concentration of described acetic acid is than being the weight concentration ratio of 8%-10%.
4. the method for claim 1 is characterized in that, the schedule time of described dissolving is 3-5 minute.
5. as each described method of claim 1-4, it is characterized in that described gravimetric value M1, M2 are accurate to behind the radix point 3.
6. as each described method of claim 1-4, it is characterized in that described drying is oven dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010250854 CN101907550A (en) | 2010-08-11 | 2010-08-11 | Method for measuring degree of oxidation of lead powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010250854 CN101907550A (en) | 2010-08-11 | 2010-08-11 | Method for measuring degree of oxidation of lead powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101907550A true CN101907550A (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010250854 Pending CN101907550A (en) | 2010-08-11 | 2010-08-11 | Method for measuring degree of oxidation of lead powder |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507367A (en) * | 2011-11-15 | 2012-06-20 | 中国航空工业集团公司北京航空材料研究院 | Detection method for non-metal foreign substances in high speed steel powder |
| CN102818789A (en) * | 2012-08-27 | 2012-12-12 | 江苏理士电池有限公司 | Supplied material grade determining method of lead powder for lead-acid storage battery pole plate |
| CN103940694A (en) * | 2014-04-15 | 2014-07-23 | 金堆城钼业股份有限公司 | Method for measuring solubility of molybdenum powder |
-
2010
- 2010-08-11 CN CN 201010250854 patent/CN101907550A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 《JB/T 6237.10-2008 电触头材料用银粉化学分析方法 第10部分：重量法测定氯化银含量》 20080312 谢永忠等 《JB/T 6237.10-2008 电触头材料用银粉化学分析方法 第10部分：重量法测定氯化银含量》 中华人民共和国发展和改革委员会 , 1 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507367A (en) * | 2011-11-15 | 2012-06-20 | 中国航空工业集团公司北京航空材料研究院 | Detection method for non-metal foreign substances in high speed steel powder |
| CN102818789A (en) * | 2012-08-27 | 2012-12-12 | 江苏理士电池有限公司 | Supplied material grade determining method of lead powder for lead-acid storage battery pole plate |
| CN103940694A (en) * | 2014-04-15 | 2014-07-23 | 金堆城钼业股份有限公司 | Method for measuring solubility of molybdenum powder |
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Application publication date: 20101208 |