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Anode for electrolytic manganese metal and preparation method thereof

A technology of electrolytic manganese metal and anode, applied in the direction of electrodes, electrolytic components, electrolytic process, etc., can solve the problems of low electric efficiency, increased cell voltage, high energy consumption, etc.

Pending Publication Date: 2022-07-26
GUIZHOU R & D CENT ON MODERN MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the DC power consumption of electrolytic manganese metal production in my country is 5600-7000kWh / t, and the current efficiency is 65-70%. There are problems of high cost, high energy consumption and low power efficiency.
During the production process of electrolytic manganese, the oxygen evolution reaction will occur at the anode. Limited by the kinetics of the oxygen evolution reaction, the anode will generate an oxygen evolution overpotential, which will increase the cell voltage during the electrolytic manganese process, increase the DC power consumption of manganese metal production, and Disadvantages of high oxygen reaction overpotential and easy bending and deformation during use

Method used

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  • Anode for electrolytic manganese metal and preparation method thereof

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Embodiment 1

[0024] A kind of preparation method of anode for electrolytic manganese metal, the concrete steps are as follows:

[0025] (a) According to the mass percentage, the chemical composition is Sn1.5%, Sb2%, Ag0.2%, and the balance is Pb, after weighing the ingredients, heat to 650°C in a crucible resistance furnace for smelting;

[0026] (b) Under the action of pulse current and static magnetic field, turn on the cooling device, set the temperature of the mold to cool down from 600°C to 100°C, and the cooling time is 6 hours to solidify the melt;

[0027] (c) preheating the roll, and rolling the solidified metal to obtain a homogeneous fine-grained metal plate with a thickness of 6 mm;

[0028] (d) punching the metal plate with a hole diameter of 20 mm to finally obtain an anode for electrolytic manganese metal.

[0029] The anode of the novel electrolytic manganese metal prepared in the present embodiment is placed in the manganese electrolyte, and the anode is placed in the man...

Embodiment 2

[0031] A kind of preparation method of anode for electrolytic manganese metal, the concrete steps are as follows:

[0032] (a) According to the mass percentage, the chemical composition is Sn2%, Sb1.5w%, Ag0.2%, and the balance is Pb, and after weighing the ingredients, heat to 650°C in a crucible resistance furnace for smelting;

[0033] (b) Under the action of pulse current and static magnetic field, turn on the cooling device, set the temperature of the mold to cool down from 600°C to 100°C, and the cooling time is 6 hours to solidify the melt;

[0034] (c) preheating the roll, and rolling the solidified metal to obtain a homogeneous fine-grained metal plate with a thickness of 6 mm;

[0035] (d) punching the metal plate with a hole diameter of 20 mm to finally obtain an anode for electrolytic manganese metal.

[0036]The anode of the novel electrolytic manganese metal prepared in the present embodiment is placed in the manganese electrolyte, and the anode is placed in the...

Embodiment 3

[0038] A kind of preparation method of anode for electrolytic manganese metal, the concrete steps are as follows:

[0039] (a) According to the mass percentage, the chemical composition is Sn2.5%, Sb1%, Ag0.2%, and the balance is Pb, after weighing the ingredients, heat to 650°C in a crucible resistance furnace for smelting;

[0040] (b) Under the action of pulse current and static magnetic field, turn on the cooling device, set the temperature of the mold to cool down from 600°C to 100°C, and the cooling time is 6 hours to solidify the melt;

[0041] (c) preheating the roll, and rolling the solidified metal to obtain a homogeneous fine-grained metal plate with a thickness of 6 mm;

[0042] (d) punching the metal plate with a hole diameter of 20 mm to finally obtain an anode for electrolytic manganese metal.

[0043] The anode of the novel electrolytic manganese metal prepared in this example is placed in the manganese electrolyte, and the Mn 2+ Concentration 35g / L, pH=7.5, ...

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Abstract

The invention provides a preparation method of an anode for electrolytic manganese metal. The preparation method comprises the following steps: adding metals Pb, Sn, Sb and Ag into a crucible resistance furnace according to a preset proportion, heating to 600-700 DEG C, and smelting; under the action of pulse current and a static magnetic field, a cooling device is started, the temperature of the mold is reduced to 100 DEG C from 600 DEG C, the cooling time is 6 hours, and the melt is solidified and formed; a roller is preheated, the solidified and formed metal is rolled, and a homogeneous fine-grain metal plate is obtained; and the fine-grain metal plate is subjected to punching treatment, and the anode for electrolytic manganese metal is obtained. Through the continuous casting and rolling process, the current treatment and the external magnetic field treatment, the corrosion resistance, the mechanical strength and the electrocatalytic activity of the anode material for electrolytic manganese are improved, the service life of the anode material is prolonged, the material cost, the cell voltage and the energy consumption in the hydrometallurgy process are greatly reduced, and a thin plate which is uniform in structure and fine in grain is obtained; and the technical requirements of electrolytic manganese metal in the field of hydrometallurgy are met.

Description

technical field [0001] The invention relates to the technical field of preparation of anode materials for manganese electrolytic cells, in particular to an anode for electrolytic manganese metal and a preparation method thereof. Background technique [0002] Electrolytic manganese metal refers to the process of obtaining manganese sulfate by acid leaching from manganese ore, and then sending the elemental metal manganese to the electrolytic cell for electrolysis. In the electrolysis process, stainless steel is used as the cathode and lead alloy as the anode. The electrode materials in the electrolysis process are required to have good electrical conductivity, corrosion resistance, good electrocatalytic activity, high mechanical strength and good processing performance. Comprehensive performance such as service life and low cost. At present, the DC power consumption of electrolytic manganese metal production in my country is 5600-7000 kWh / t, and the current efficiency is 65-...

Claims

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Application Information

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IPC IPC(8): B22D11/114B22D11/115C22C1/02C22C11/06C22C11/10C22F1/12C25C1/10C25C7/02
CPCB22D11/115B22D11/114C22C11/06C22C11/10C22C1/02C22F1/12C25C1/10C25C7/02Y02E60/10
Inventor 黄健李武斌胡志同李勇叶昌美张谊杜洪伍
Owner GUIZHOU R & D CENT ON MODERN MATERIALS
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