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Process method for producing lead-calcium-cerium alloy based on waste lead grid of waste lead-acid battery

The technology of a waste lead-acid battery and a process method is applied in the directions of lead-acid battery, battery recycling, waste collector recycling, etc., which can solve the problem of inability to use metal tin in waste lead grids, and achieves good reaction effect, simple operation, The effect of simple process

Active Publication Date: 2019-10-11
JIANGSU NEW CHUNXING RESOURCE RECYCLING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a process for producing lead-calcium-cerium alloy based on the waste lead grid of waste lead-acid batteries, so as to solve the problem that in the prior art, the metal in the waste lead grid cannot be utilized no matter whether oxidation refining or alkaline refining is adopted. tin problem

Method used

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  • Process method for producing lead-calcium-cerium alloy based on waste lead grid of waste lead-acid battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]Example 1: The waste lead grid is melted at 420±20°C in the melting pot, and the lead liquid is pumped into the copper removal pot with a lead pump after the ash is removed, and the sampling spectrum is analyzed. The composition: Sb 0.102%, As 0.0071%, Sn 0.51 %, Cu 0.013%, Bi 0.0038%, Ag0.00068%, Pb balance; heating up to 530±20°C, adding pyrite powder to remove copper, sampling direct reading spectral analysis, the composition is as follows: Sb 0.100%, As 0.0068 %, Sn 0.505%, Cu 0.0005%, Bi 0.0038%, Ag 0.00069%, Pb balance.

[0038] After the ash and slag are crushed, the copper and lead liquid is pumped into the refining pot with a lead pump.

[0039] Raise the temperature of the copper and lead removal solution in the refining pot to 560±20°C, calculate the amount of antimony, arsenic and tin retention agent used as 1.3 times the total amount of antimony and arsenic, turn on the mixer, stir the lead solution to generate a vortex, and the input speed should not affect...

Embodiment 2

[0042] Example 2: The waste lead grid is melted at 380±20°C in the melting pot, and the lead liquid is pumped into the copper removal pot with a lead pump after the ash is removed, and the sampling spectrum is analyzed. The composition: Sb 0.08%, As 0.007%, Sn 0.67 %, Cu 0.011%, Bi 0.004%, Ag0.00071%, Pb balance; cool down to 355±20°C, add red phosphorus to remove copper, sample direct reading spectrum analysis, the composition is as follows: Sb0.081%, As 0.0071%, Sn 0.655%, Cu 0.0003%, Bi 0.004%, Ag 0.00070%, Pb balance.

[0043] After the ash and slag are crushed, the copper and lead liquid is pumped into the refining pot with a lead pump.

[0044] Raise the temperature of the copper and lead removal solution in the refining pot to 570±20°C, calculate the amount of antimony, arsenic and tin retention agent used as 1.3 times the total amount of antimony and arsenic, turn on the mixer, stir the lead solution to produce a vortex, and the input speed should not affect the vortex...

Embodiment 3

[0047] Example 3: The waste lead grid is melted at 480±20°C in the melting pot, and the lead liquid is pumped into the copper removal pot with a lead pump after the ash is removed, and the sampling spectrum is analyzed. The composition: Sb 0.012%, As 0.0091%, Sn 0.39 %, Cu 0.009%, Bi 0.0035%, Ag0.00078%, Pb balance; heating to 490±20°C, adding a mixture of sulfur and pyrite powder to remove copper, the weight percentage: sulfur 15%, pyrite 85%, sampling direct reading spectroscopic analysis, the composition is as follows: Sb 0.011%, As 0.0091%, Sn 0.375%, Cu 0.00049%, Bi 0.0035%, Ag 0.00079%, Pb balance.

[0048] After the ash and slag are crushed, the copper and lead liquid is pumped into the refining pot with a lead pump.

[0049] Raise the temperature of the copper and lead removal solution in the refining pot to 560±20°C, calculate the amount of antimony, arsenic and tin retention agent used as 1.3 times the total amount of antimony and arsenic, turn on the mixer, stir the...

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Abstract

A process method for producing lead calcium cerium alloy on the basis of a waste lead grid mesh of a waste lead-acid storage battery belongs to the field of integral recycling of waste lead-acid storage battery. The process comprises the steps of performing low-temperature melting on the waste lead grid mesh to remove copper, refining to remove impurity, selectively removing antimony and arsenic,adjusting tin content, adding calcium aluminum and rare-earth cerium for alloying, and casting ingot. The indexes such as tensile strength, density, hardness and corrosion resistance of the produced lead calcium cerium alloy are basically consistent with those of lead-based alloy prepared by original electrolytic lead, and the application requirement of storage battery grid alloy is met. The process method has the advantages that the process is simple, is convenient to operate and is high in production efficiency, valuable metal tin in the waste lead grid mesh is effectively utilized, the production cost of lead alloy preparation is reduced, meanwhile, no smoke and no favor are generated during the antimony and arsenic removal process, and the working environment is favorable.

Description

technical field [0001] The invention relates to the field of comprehensive recycling of waste lead-acid batteries, in particular to a process method for producing lead-calcium-cerium alloys based on waste lead grids of waste lead-acid batteries. Background technique [0002] The lead-acid battery grid is the most important inactive substance in the battery. It acts as an important carrier of active substances, plays the role of conducting and collecting current, and makes the current evenly distributed on the active substances. Lead-antimony alloy has always been the most important material for grids. With the emergence of maintenance-free lead-acid batteries, lead-antimony alloys can no longer meet the performance requirements of battery maintenance-free, and are gradually replaced by lead-calcium alloys. At present, the most widely used is Lead-calcium-tin-aluminum grid alloy, the study found that the lead-calcium-tin-aluminum grid alloy has excellent maintenance-free perf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/54H01M10/06
CPCH01M10/06H01M10/54Y02E60/10Y02W30/84
Inventor 杨春明
Owner JIANGSU NEW CHUNXING RESOURCE RECYCLING CO LTD
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