Method for preparing tetrabasic lead sulfate

A four-basic lead sulfate and sulfuric acid solution technology, which is applied in the manufacture of lead sulfate, lead-acid batteries, and final products, can solve the problems of unevenness, shortening the preparation reaction time, and large crystal particles, and achieve smaller and more uniform particle sizes , Shorten mixing time and high preparation rate

Active Publication Date: 2017-04-19
ZHEJIANG DOULAN INTELLIGENT EQUIP CO LTD
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the existing defects of the above-mentioned tetrabasic lead sulfate preparation method, provide a kind of method for preparing tetrabasic lead sulfate, adopt the method that the lead material after premixing is directly reacted with sulfuric acid, make full use of concentrated sulfuric acid The heat generated by the exothermic reaction makes the reaction kettle heat up rapidly, thereby shortening the prepara

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing tetrabasic lead sulfate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0035] In the present invention, unless otherwise specified, the raw materials used can be purchased from the market or commonly used in the field. The processes in the following examples are conventional methods in the field unless otherwise specified.

[0036] Refer to the attached figure 1 A method for preparing tetrabasic lead sulfate in this embodiment is described. Accurately weigh the lead powder raw material, wherein the lead powder raw material in the present invention is one or more of lead powder, lead oxide, and lead sulfate for lead-acid storage battery production, and calculate lead oxide and free lead according to the oxidation degree of lead powd...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method for preparing tetrabasic lead sulfate. The method comprises the following steps: 1, carrying out a preparation reaction: sending a premixed lead material to a reaction kettle, adding a sulfuric acid solution to the reaction kettle while carrying out uniform cyclic stirring, and introducing compressed air to the reaction kettle to cool in order to obtain lead mud; and 2, carrying out a ball milling reaction: conveying the lead mud obtained in step 1 to a dry ball mill, and synchronously carrying out drying and ball milling treatment to obtain the tetrabasic lead sulfate product. The premixed lead material directly reacts with sulfuric acid, and heat generated in the exothermic reaction of concentrated sulfuric acid is fully used to rapidly heat the reaction kettle, so the preparation reaction time is shortened; and a reaction product is rapidly cooled by the compressed air to further effectively inhibit growth of 4BS crystal particles, so the granularity of the formed 48S is small, uniform and controllable, and the technical problems of large and non-uniform crystal particles of the reaction product, caused by high preparation reaction temperature and long reaction time of the 4BS in the prior art are effectively solved.

Description

technical field [0001] The invention relates to the field of preparation of lead-acid battery materials, in particular to a method for preparing tetrabasic lead sulfate. Background technique [0002] Recently, in the production of lead-acid batteries, in order to prolong the cycle life of the battery, one of the most effective measures is to use a lead paste with a high content of tetrabasic lead sulfate, and the abbreviation of tetrabasic lead sulfate is 4BS, and 4BS as the crystal nucleus The addition of 4BS can control the amount and grain size of the formed 4BS, which overcomes the problem of high-content and large-grain 4BS plate formation, and the battery has excellent discharge performance. [0003] Chinese invention patent 201310281747.4 discloses a preparation method of tetrabasic lead sulfate, including the following steps: A. Weighing the sample, B. Hydrothermal reaction, C. Ball milling, D. Vacuum drying, E. Post-treatment and other steps. The present invention ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C01G21/20H01M10/12
CPCC01G21/20H01M10/12Y02E60/10Y02P70/50
Inventor 钱顺荣法俊卿钱梦飞
Owner ZHEJIANG DOULAN INTELLIGENT EQUIP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap