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A kind of manufacturing method of energy-saving and corrosion-resistant PB-AG-LA alloy anode plate

An alloy anode and anti-corrosion technology, which is applied in the field of metallurgical technology, can solve the problems of poor corrosion resistance of the electrode, achieve the effects of not easy to fall off, improve the deformation of the anode, and increase the output rate

Active Publication Date: 2018-05-25
KUNMING METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The added CNT refines the β-PbO 2 The crystal grains and its electrocatalytic activity are increased, and the cell voltage of the new electrode can be reduced by 160mV compared with the Pb-1%Ag anode, but the problem of poor corrosion resistance of the electrode has not been improved.

Method used

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  • A kind of manufacturing method of energy-saving and corrosion-resistant PB-AG-LA alloy anode plate
  • A kind of manufacturing method of energy-saving and corrosion-resistant PB-AG-LA alloy anode plate

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Put the lanthanum master alloy in the lead for use first, wherein the mass ratio of lanthanum to lead is 0.5%, then put the refined lead into the lead melting furnace, add Ag with 0.5% of the refined lead mass after the lead is melted, and the Ag in the refined lead liquid After melting in the middle, add the prepared lead-lanthanum master alloy solution to form a master alloy solution, stir evenly and slag, and cast it into a mold to form a rough plate; cool the rough plate and place it for more than one week, and use a rolling mill to process the rough plate 3 4 times of reverse rolling; according to the relevant size, the plate surface is cut and punched to form a punched plate with a hole size of 2cm²; the copper beam is brushed, tinned on the surface after heating, and the tinned copper beam is placed in the mold. Casting lead liquid wraps tinned copper beams to form copper-lead beams; using gas welding technology, the punched plate and copper-lead beams are welded ...

Embodiment 2

[0048]Put the lanthanum master alloy in the lead for use first, wherein the mass ratio of lanthanum to lead is 2.0%, then put the refined lead into the lead melting furnace, add Ag with 0.2% of the refined lead mass after the lead is melted, and the Ag is in the refined lead liquid After melting in the middle, add the prepared lead-lanthanum master alloy solution to form a master alloy solution, stir evenly and slag, and cast it into a mold to form a rough plate; cool the rough plate and place it for more than one week, and use a rolling mill to process the rough plate 5 3 times of reverse rolling; according to the relevant size, the plate surface is cut and punched to form a punched plate with a hole size of 10cm²; the copper beam is brushed, tinned on the surface after heating, and the tinned copper beam is placed in the mold. Casting lead liquid wraps tinned copper beams to form copper-lead beams; using gas welding technology, the punched plate and copper-lead beams are weld...

Embodiment 3

[0050] Put the lanthanum master alloy in the lead for use first, wherein the mass ratio of lanthanum to lead is 1.0%, then put the refined lead into the lead melting furnace, add Ag with 0.3% of the refined lead mass after the lead is melted, and the Ag is in the refined lead liquid After melting in the middle, add the prepared lead-lanthanum master alloy solution to form a master alloy solution, stir evenly and slag, and cast it into a mold to form a rough plate; cool the rough plate and place it for more than one week, and use a rolling mill to process the rough plate 4 3 times, reverse rolling 3 times; according to the relevant size, the plate surface is cut and punched to form a punched plate, the hole size is 5cm²; the copper beam is brushed, tinned on the surface after heating, and the tinned copper beam is placed in the mold. Casting lead liquid wraps tinned copper beams to form copper-lead beams; using gas welding technology, the punched plate and copper-lead beams are ...

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Abstract

The invention discloses a making method of an energy-saving corrosion-resistant Pb-Ag-La alloy anode plate. The making method comprises the following steps of A, preparing a blank, B, cooling and rolling, C, cutting and punching, D, casting a copper-lead cross beam and E, welding a punched-plate. According to the making method, rare earth lanthanum is added when the Pb-Ag-La alloy anode plate is made, and compared with a Pb-Ag anode alloy without rare earth elements, a made anode alloy has lower corrosion rate; after rare earth lanthanum is added, anode mud is sheeted and is prone to fall off, and a cell voltage rising situation is improved; the anode strength of Pb-Ag-La rare earth is improved, an anode deformation situation in an electrodeposition process is improved; and the production cost of a zinc electrodeposited anode plate is reduced. A blank plate is rolled repeatedly, the performances like plate material compactness are improved; a punching mode is adopted for making the Pb-Ag-La alloy anode plate, a surface area of a porous anode is increased, the apparent appearance current density during working of the anode is reduced, and anode oxygen evolution potential is reduced. The making method is simple in technology, energy consumption of the made Pb-Ag-La alloy anode plate is reduced, and the corrosion resistance of the Pb-Ag-La alloy anode plate is improved.

Description

technical field [0001] The invention belongs to the technical field of metallurgical technology, and relates to a method for manufacturing an energy-saving and anti-corrosion Pb-Ag-La alloy anode plate with simple structure and convenient use. Background technique [0002] Electrolysis engineering, especially the electrochemical industry and electrometallurgy industry are inseparable from electrode materials. According to relevant statistics, the energy consumption of anode reaction accounts for more than 53% of the total energy consumption of zinc electrowinning, and the precipitation of oxygen accounts for more than 45% of the energy consumption of anode reaction. In recent years, research on the modification of anode materials has been continuously reported, adding different alloy elements, coatings and structures to make electrodes with excellent performance. [0003] Lead-based coated anode: The surface of the anode is coated with an electro-catalytic coating, which ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C11/00C22C1/03B23P15/00C25C7/02C25C1/16
CPCB23P15/00C22C1/03C22C11/00C25C1/16C25C7/02Y02P10/20
Inventor 李雨耕雷华志张永平胥福顺包崇军何光深王家仁朱国邦张安福周娴崔丁方张志军匡志恩杨筱筱闫森赵云孙彦华陈越方树铭陈愚李祖梅李碧科钱建波周悦
Owner KUNMING METALLURGY INST