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Carbon fiber base gradient composite anode material for manganese electrodeposition and preparing method of material

A technology of composite anode and anode material, applied in electrodes, electrolytic coatings, metal material coating processes, etc., can solve the problems of increasing impurities in cathode products, poor corrosion resistance of anodes, and reducing product quality, etc., to improve electrical conductivity and Corrosion resistance, improved oxidation resistance and thermal shock resistance, long life effect

Active Publication Date: 2017-10-13
KUNMING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since carbon fiber is a microcrystalline graphite material, it is easy to consume when used as an anode alone
The traditionally used lead-silver alloy anode has poor corrosion resistance, and a small amount of lead in the anode will dissolve in the electrolytic solution to increase impurities in the cathode product and reduce product quality

Method used

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  • Carbon fiber base gradient composite anode material for manganese electrodeposition and preparing method of material

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Embodiment 1

[0028] Such as figure 1 As shown, the carbon fiber-based gradient composite anode material for manganese electrowinning of the present invention includes a carbon fiber matrix 1, and the α-PbO compounded on the surface of the carbon fiber matrix that introduces nano-graphene particles 2 Composite coating 2, composite in α-PbO 2 The introduction of SiO on the surface of composite coating 2 2 Granular β-PbO 2 Composite coating 3, covered in β-PbO 2 The introduction of RuO on the surface of composite coating 3 2 Granular β-MnO 2 Composite coating4.

[0029] α-PbO described in this example 2 The composition of graphene particles in composite coating 2 is 2wt%, β-PbO 2 SiO in Composite Coating 3 2 Particle composition is 3.5 wt%, β-MnO 2 RuO in Composite Coating 4 2 The particle composition was 15% by weight. The total thickness of composite anode material is 8mm, the thickness of carbon fiber matrix is ​​4.8mm, α-PbO 2 Composite coating thickness is 0.5mm, β-PbO 2 Com...

Embodiment 2

[0039] The structure of the carbon fiber-based gradient composite anode material for manganese electrowinning in this embodiment is the same as that in Embodiment 1. The α-PbO 2 The composition of graphene particles in composite coating 2 is 1.57wt%, β-PbO 2 SiO in Composite Coating 3 2 Particle composition is 5wt%, β-MnO 2 RuO in Composite Coating 4 2 The particle composition was 10 wt%. The total thickness of composite anode material is 13mm, the thickness of carbon fiber matrix is ​​11mm, α-PbO 2 Composite coating thickness is 0.3mm, β-PbO 2 Composite coating thickness is 0.5mm, β-MnO 2 Composite coating thickness is 0.2mm.

[0040] The preparation method of carbon fiber-based gradient composite anode material for manganese electrowinning is as follows:

[0041] (1) Firstly, the carbon fiber matrix 1 is degummed, and under the protection of nitrogen or argon, it is heated at 700-800°C to increase the active specific surface of the carbon fiber, and at the same time ...

Embodiment 3

[0049] The structure of the carbon fiber-based gradient composite anode material for manganese electrowinning in this embodiment is the same as that in Embodiment 1. The α-PbO 2 The composition of graphene particles in composite coating 2 is 4wt%, β-PbO 2 SiO in Composite Coating 3 2 Particle composition is 2.01wt%, β-MnO 2 RuO in Composite Coating 4 2 The particle composition was 25% by weight. The total thickness of composite anode material is 4mm, the thickness of carbon fiber matrix is ​​3mm, α-PbO 2 Composite coating thickness is 0.1mm, β-PbO 2 Composite coating thickness is 0.39mm, β-MnO 2 Composite coating thickness is 0.01mm.

[0050] The preparation method of carbon fiber-based gradient composite anode material for manganese electrowinning is as follows:

[0051] (1) Firstly, the carbon fiber matrix 1 is degummed, and under the protection of nitrogen or argon, it is heated at 600-700°C to increase the active specific surface of the carbon fiber, and at the sam...

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Abstract

The invention discloses a carbon fiber base gradient composite anode material for manganese electrodeposition and a preparing method of the material. The anode material comprises a carbon fiber base body (1), an alpha-PbO2 composite coating (2) compounded on the surface of the carbon fiber base body and provided with nano graphene particles introduced, a beta-PbO2 composite coating (3) compounded on the surface of the alpha-PbO2 composite coating (2) and provided withSiO2 particles introduced, and a beta-MnO2 composite coating (4) covering the surface of the beta-PbO2 composite coating (3) and provided with RuO2 particles introduced. The prepared carbon fiber base gradient composite anode material is good in electrocatalytic activity, low in groove voltage, long in service life, low in cost and high in electric efficiency.

Description

technical field [0001] The invention relates to the technical field of an anode material for manganese electrowinning and a preparation method thereof. Background technique [0002] In industrial production, the metallurgical industry is still a large energy consumer, with high energy consumption in production, and its main unit energy consumption is 40% higher than the advanced foreign level on average. In the smelting process of metal manganese, more than 90% of the manganese is extracted by hydrometallurgy technology, and the current efficiency of electrolytic manganese metal is low, generally only reaching about 75%. The famous "electric tiger", if the domestic production of manganese ingots is 2 million tons in 2016, the energy consumption will be close to 15 billion kilowatt-hours. Although the production process of electrolytic manganese metal is a mature production process, it still has great potential to be tapped. As far as the development of electrolytic mangane...

Claims

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Application Information

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IPC IPC(8): C25C7/02C25C1/10C23C28/04C25D5/54C25D15/00C23C18/12
CPCC23C18/1216C23C18/1266C23C28/04C25C1/10C25C7/02C25D5/54C25D15/00
Inventor 陈步明郭忠诚黄惠李学龙
Owner KUNMING UNIV OF SCI & TECH
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