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A method for processing lead anode plate exfoliation in copper electrodeposited

A technology of lead anode and exfoliation, applied in the field of industrial waste treatment, can solve problems such as short circuit of plates, waste of lead resources, environmental pollution, etc., and achieve the effects of small pollution, large economic benefits, and elimination of adverse effects

Active Publication Date: 2014-10-01
JIANGXI GREEN ECO MFG RESOURCE CYCLE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If not treated, these lead anode plate exfoliations may be suspended in the solution, and then migrate and adsorb on the surface of the cathode copper plate to form crystallization centers, resulting in the growth of copper particles of different sizes on the copper plate (the impurity content of which is often the same as that of the base copper plate. dozens to hundreds of times), in severe cases, the copper particles will develop into dendrites and eventually lead to short circuits between the plates
If not handled properly, such as directly storing or burying these lead anode plate sheddings, the lead-containing substances will pollute the environment and cause a waste of lead resources

Method used

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  • A method for processing lead anode plate exfoliation in copper electrodeposited

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Embodiment 1

[0027] A method for processing the shedding of lead anode plates in electrodeposited copper, comprising the following steps:

[0028] (1) Separation of copper: Take the shedding of the lead anode plate and grind it until the average diameter of the particles is 0.15 mm. Take 100g of ground lead anode plate shedding particles, add 300ml of 70°C hot water to wash at a solid-to-liquid ratio of 1:3, and stir at 70°C for 0.5 hours. The solid and liquid are separated by filtration to obtain a copper-containing filtrate and a copper-removing filter residue. The concentration of copper in the copper-containing filtrate was measured to be 1.0 g / L, and the copper-containing filtrate was used to recover copper.

[0029] (2) Lead leaching by acid leaching: take the copper removal filter residue described in step (1), and add 500 mL of tap water at a solid-to-liquid ratio of 1:5 with the lead anode plate shedding obtained in step (1). Then add acetic acid and nitric acid mixed acid 100mL...

Embodiment 2

[0035] A method for processing the shedding of lead anode plates in electrodeposited copper, comprising the following steps:

[0036] (1) Separation of copper: Take the shedding of the lead anode plate and grind it until the average diameter of the particles is 0.17mm. Take 100g of ground lead anode plate exfoliation particles, add 200ml of 80°C hot water for washing at a solid-to-liquid ratio of 1:2, and stir at 80°C for 0.5 hours. The solid and liquid are separated by filtration to obtain a copper-containing filtrate and a copper-removing filter residue. The concentration of copper in the copper-containing filtrate was measured to be 1.7g / L, and the copper-containing filtrate was used to recover copper.

[0037] (2) Lead extraction by acid leaching: get the copper-removing filter residue described in step (1), and add the supernatant from step (3) by the solid-liquid ratio of the lead anode plate shedding obtained in step (1) as 1:6 Liquid I 600mL. Then add acetic acid an...

Embodiment 3

[0043] A method for processing the shedding of lead anode plates in electrodeposited copper, comprising the following steps:

[0044] (1) Separation of copper: Take the shedding of the lead anode plate and grind it until the average diameter of the particles is 0.11mm. Get 100g of ground lead anode plate shedding particles, add 300ml of 60°C hot water to wash at a solid-to-liquid ratio of 1:3, and stir at 80°C for 1 hour. The solid and liquid are separated by filtration to obtain a copper-containing filtrate and a copper-removing filter residue. The concentration of copper in the copper-containing filtrate was measured to be 0.68g / L, and the copper-containing filtrate was used to recover copper.

[0045] (2) Lead extraction by acid leaching: get the copper removal filter residue described in the step (1), and add the supernatant from the step (5) by the solid-liquid ratio of the lead anode plate shedding obtained in the step (1) as 1:8 Liquid II 800mL. Then add acetic acid ...

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Abstract

The invention provides a method for treating cast of lead anode plates in electro-deposit copper. The method comprises the steps of: separating copper, carrying out acid leaching to leach lead, depositing lead ions and carrying out deposition inversion to product leaded products. According to the method provided by the invention, the bad influences of the cast of lead anode plates on the environment can be decreased or eliminated and the waste can be turned into wealth; the metallic lead in the cast of the lead anode plates is effectively utilized, so that greater economic benefit can be obtained; and the method has the advantages of rationality, feasibility, small pollution and industrialization.

Description

technical field [0001] The invention relates to a method for processing industrial waste, in particular to a method for processing the shedding of lead anode plates in electrodeposited copper. Background technique [0002] In hydrometallurgy, copper electrodeposition refers to the process of electrolytic deposition of extracted and enriched copper solution to produce cathode copper. Among them, the electrowinning anodes are mostly insoluble lead anode plates (Pb-Sn-Ca alloy, containing 93%-98% lead, 1%-2% tin, and <0.1% calcium). The lead anode plate is often oxidized to form lead sulfate, lead oxide or lead dioxide due to the long-term corrosion of impurity ions such as chloride ions and permanganate ions in the copper sulfate electrolyte, as well as oil, sulfuric acid and other chemical substances. , and subsequently fall off under the action of physical beating and / or electrochemical corrosion caused by high current density to form lead anode plate exfoliation. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B3/04C22B3/46C25C1/12C25C7/06C22B13/00
CPCY02P10/20
Inventor 王勤何显达陈艳红苏陶贵马琳郭苗苗
Owner JIANGXI GREEN ECO MFG RESOURCE CYCLE