Title:
METHOD FOR TESTING WATER ABSORPTION RATE OF LEAD POWDER
Document Type and Number:
WIPO Patent Application WO/2019/041603
Kind Code:
A1
Abstract:
A method for testing the water absorption rate of lead powder, comprising the following steps: (1) adding water into lead powder and carrying out kneading to obtain lumpy lead paste; (2) adding the lead paste into an empty steel cup, compacting same and carrying out scraping to allow the lead paste to be aligned with the mouth of the cup; and (3) calculating the apparent density of the lead paste to be (Mcup + lead powder - Mcup)/Vcup, wherein if the apparent density is within a pre-set range, the water absorption rate of the lead powder is Vwater/Mlead powder; if the apparent density is greater than the pre-set range, V1 water is added into the lead paste; and if the apparent density is less than the pre-set range, M1 lead powder is added into the lead paste, then an operation is carried out in the same way until the apparent density is within the pre-set range, and the water absorption rate of the lead powder is (Vwater + V1)/Mlead powder or Vwater/(Mlead powder + M1). The method can more accurately measure the water absorption rate of lead powder, and is quantitatively controllable in terms of measurement end point and has a high reproducibility rate.
Inventors:
MAO LIMING (CN)
Application Number:
PCT/CN2017/113742
Publication Date:
March 07, 2019
Filing Date:
November 30, 2017
Export Citation:
Assignee:
ZHEJIANG TIAN NENG BATTERY JIANGSU CO LTD (CN)
International Classes:
G01N5/02
Foreign References:
| CN101975723A | 2011-02-16 | |||
| CN201615866U | 2010-10-27 | |||
| CN201795976U | 2011-04-13 | |||
| CN204924846U | 2015-12-30 | |||
| CN106896035A | 2017-06-27 | |||
| CN106920923A | 2017-07-04 |
Attorney, Agent or Firm:
HUAIAN KEWEN INTELLECTUAL PROPERTY OFFICE (CN)
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