Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing manganese-zinc ferrite soft magnet by using waste zinc-manganese battery biological leachate as material

A technology of biological leaching and zinc-manganese batteries, which is applied in the direction of magnetic objects, battery recycling, and waste collector recycling, can solve the problems of poor uniformity, high energy consumption, and high cost, and achieve excellent magnetization, low energy consumption, and low cost. small effect

Active Publication Date: 2015-05-20
BEIJING INSTITUTE OF TECHNOLOGYGY
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of high cost, high energy consumption and poor uniformity in the existing preparation methods of manganese-zinc-ferrite soft magnetic materials, and propose a method to prepare manganese-zinc-ferrite soft magnetic materials by using waste zinc-manganese battery biological leachate as raw material material method

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 manganese-zinc ferrite soft magnet by using waste zinc-manganese battery biological leachate as material
  • Method for preparing manganese-zinc ferrite soft magnet by using waste zinc-manganese battery biological leachate as material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step 1. Preparation of bioleachate

[0032] 1. Disassemble the waste zinc-manganese battery, remove single components such as zinc skin, copper cap, carbon rod, etc., collect the positive and negative electrode materials of the battery with complex components and the most concentrated heavy metal content, crush and sieve, and the particle size is 100 microns.

[0033] 2. Preparation of biological leaching medium. Bioleaching medium: (NH 4 ) 2 SO 4 ,2.0g / L;MgSO 4 ,0.5g / L; CaCl 2 ,0.25g / L; KH 2 PO 4 ,1.0g / L;FeSO 4 ,0.1g / L; The solvent is distilled water. The reducing energy substrate is a mixture of sulfur powder and pyrite with a concentration of 12g / L. Simultaneous inoculation of Thiobacillus thiooxidans and Thiobacillus ferrooxidans, the inoculation amount is 5% (v / v);

[0034] 3. After cultivating the bioleaching medium (30°C, 120 rpm) on a shaking table for 7 days, the pH value of the bioleaching solution dropped to 0.8. At this time, the electrode materia...

Embodiment 2

[0048] Step 1. Preparation of bioleachate

[0049] 1. Disassemble the waste zinc-manganese battery, remove single components such as zinc skin, copper cap, carbon rod, etc., collect the positive and negative electrode materials of the battery with complex components and the most concentrated heavy metal content, crush and sieve, and the particle size is 50 microns.

[0050] 2. Preparation of biological leaching medium. Bioleaching medium: (NH 4 ) 2 SO 4 ,2.0g / L;MgSO 4 ,0.5g / L; CaCl 2 ,0.25g / L; KH 2 PO 4 ,1.0g / L;FeSO 4 ,0.1g / L; The solvent is distilled water. The reducing energy substrate is a mixture of sulfur powder and pyrite with a concentration of 12g / L. Simultaneous inoculation of Thiobacillus thiooxidans and Thiobacillus ferrooxidans, the inoculation amount is 5% (v / v);

[0051] 3. After cultivating the bioleaching medium (30°C, 120 rpm) on a shaking table for 7 days, the pH value of the bioleaching solution dropped to 0.8. At this time, the electrode material...

Embodiment 3

[0064] Step 1. Preparation of bioleachate

[0065] 1. Disassemble the waste zinc-manganese battery, remove single components such as zinc skin, copper cap, carbon rod, etc., collect the positive and negative electrode materials of the battery with complex components and the most concentrated heavy metal content, crush and sieve, and the particle size is 50 microns.

[0066] 2. Preparation of biological leaching medium. Bioleaching medium: (NH 4 ) 2 SO 4 ,1.0g / L;MgSO 4 ,0.25g / L; CaCl 2 ,0.1g / L; KH 2 PO 4 ,0.5g / L;FeSO 4 ,0.05g / L; The solvent is distilled water. The reducing energy substrate is a mixture of sulfur powder and pyrite, the concentration of which is 8g / L. Simultaneous inoculation of Thiobacillus thiooxidans and Thiobacillus ferrooxidans, the inoculation amount is 2.5% (v / v);

[0067] 3. After cultivating the bioleaching medium (30°C, 120 rpm) on a shaking table for 7 days, the pH value of the bioleaching solution dropped to 0.8. At this time, the electrode...

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for preparing a manganese-zinc ferrite soft magnet by using waste zinc-manganese battery biological leachate as a material, belonging to the technical field of resourceful treatment of solid waste. The method comprises the following steps of obtaining the anode and cathode materials of a waste zinc-manganese battery and crushing; and adding the crushed anode and cathode materials into a biological leaching system which uses sulfur and pyrite as a mixed energy substrate and uses sulfur-oxidizing bacteria and iron-oxidizing bacteria as a mixed bacterial strain in a solid-to-liquid ratio of 2.5%-10%; leaching for 5-15 days until the manganese-zinc ion concentration is not increased, collecting the leachate and centrifuging or filtering to remove solid substances to obtain the biological leachate. Main ingredient and auxiliary ingredients are supplemented in the biological leachate, and a coprecipitator sodium hydroxide and an oxidizing agent hydrogen peroxide are added step by step to prepare a manganese-zinc ferrite precursor through coprecipitation. The oxidizing agent hydrogen peroxide is boiled and refluxed to finally prepare the manganese-zinc ferrite soft magnet powder material. The method disclosed by the invention is not only introduced with an organic surfactant, but also has the advantages of being safe, low in energy consumption, low in cost, gentle in condition, simple in process and the like.

Description

technical field [0001] The invention relates to a method for preparing a manganese-zinc-ferrite material soft magnet by using waste zinc-manganese battery biological leachate as a raw material, and belongs to the technical field of solid waste resource treatment. Background technique [0002] Zinc-manganese batteries are the battery type with the largest output, the most consumption, and the lowest price. In a developing country like ours. As a primary battery, the service life of zinc-manganese batteries is much lower than that of other rechargeable secondary batteries. Therefore, a huge amount of waste zinc-manganese batteries are produced and enter the environment every year around the world. It is estimated that the global annual consumption of zinc-manganese batteries is about 40 billion, accounting for 50% of the total battery consumption. The content of zinc and manganese in zinc-manganese batteries is roughly 22% and 26%. According to the calculation of 40 billion...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/54H01F1/147
CPCY02W30/84
Inventor 辛宝平陈实马捷
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com