Process method for producing high-tin-lead-calcium alloy by using waste lead-acid battery waste lead grid

A technology of waste lead-acid batteries and a process method, which is applied in the field of comprehensive recycling of waste lead-acid batteries, can solve the problems of inability to utilize metal tin in waste lead-acid grids, achieve good reaction effects, simple process, and reduce production costs

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

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Problems solved by technology

[0005] The purpose of the present invention is to provide a process for producing high-tin-lead-calcium alloys using the waste lead grids of waste lead-acid batteries, to solve the problem that in the prior art, no matter whether oxidation refining or alkaline refining is used, the waste lead grids cannot be used. tin metal problem

Method used

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  • Process method for producing high-tin-lead-calcium alloy by using waste lead-acid battery waste lead grid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1: The waste lead grid is melted in the melting pot at 410±20°C, 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 0.132%, As 0.0051%, Sn 0.71 %, Cu 0.013%, Bi 0.0031%, Ag0.00062%, Pb balance; heating up to 490±20°C, adding pyrite powder to remove copper, sampling direct reading spectral analysis, the composition is as follows: Sb 0.130%, As 0.0051 %, Sn 0.70%, Cu 0.0005%, Bi 0.0031%, Ag 0.00062%, Pb balance.

[0035] After the ash and slag are crushed, the copper and lead liquid is pumped into the refining pot with a lead pump.

[0036] Raise the temperature of the copper and lead removal solution in the refining pot to 580±20°C, calculate the amount of antimony, arsenic and tin retention agent based on 1.1 times the total amount of antimony and arsenic, turn on the mixer, stir the lead solution to generate a vortex, and input the speed so that it does ...

Embodiment 2

[0039] Example 2: The waste lead grid is melted in the melting pot at 370±20°C, after the ash is removed, the lead liquid is pumped into the copper removal pot with a lead pump, and the sampling spectrum is analyzed. The composition: Sb 0.08%, As 0.009%, Sn 0.61 %, Cu 0.013%, Bi 0.004%, Ag0.00078%, Pb balance; cool down to 360±20°C, add red phosphorus to remove copper, sample direct reading spectrum analysis, the composition is as follows: Sb0.081%, As 0.0081%, Sn 0.592%, Cu 0.0004%, Bi 0.004%, Ag 0.00078%, Pb balance.

[0040] After the ash and slag are crushed, the copper and lead liquid is pumped into the refining pot with a lead pump.

[0041] Raise the temperature of the copper and lead removal liquid in the refining pot to 570±20°C, calculate the amount of antimony, arsenic and tin retention agent used as 1.5 times the total amount of antimony and arsenic, turn on the mixer, stir the lead liquid to generate a vortex, and input the speed so as not to affect the vortex Th...

Embodiment 3

[0044] Example 3: The waste lead grid is melted at 430±20°C in the melting pot, and after the ash is removed, the lead liquid is pumped into the copper removal pot with a lead pump, and the sampling spectrum is analyzed. The composition: Sb 0.07%, As 0.01%, Sn 0.45 %, Cu 0.014%, Bi 0.004%, Ag0.0008%, Pb balance; heating up to 480±20°C, adding pyrite powder to remove copper, sampling direct reading spectrum analysis, the composition is as follows: Sb 0.069%, As 0.0091 %, Sn 0.45%, Cu 0.00046%, Bi 0.004%, Ag 0.00079%, Pb balance.

[0045] After the ash and slag are crushed, the copper and lead liquid is pumped into the refining pot with a lead pump.

[0046] Raise the temperature of the copper and lead removal solution in the refining pot to 580±20°C, calculate the amount of antimony, arsenic and tin retention agent used as 1.4 times the total amount of antimony and arsenic, turn on the mixer, stir the lead solution to generate a vortex, and input the speed so as not to affect t...

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Abstract

The invention relates to a process method for producing a high-tin-lead-calcium alloy by utilizing a waste lead grid mesh of a waste lead-acid storage battery, and belongs to the field of waste lead-acid storage battery comprehensive recovery and utilization. The process method for producing the high-tin-lead-calcium alloy by utilizing the waste lead grid mesh of the waste lead-acid storage battery comprises the steps of melting the waste lead grid mesh in a smelting pot at low temperature, controlling the melting temperature to range from 350 to 500 DEG C, ramming ash, and adding a copper removal agent for removing copper so as to obtain a decopperized lead solution; and heating the decopperized lead solution to 580 to 650 DEG C, adding an antimony-arsenic-removal tin-protecting agent forremoving antimony and arsenic so as to obtain a tin-containing lead solution, purifying the tin-containing lead solution, and then preparing the high-tin-lead-calcium alloy. The produced high-tin-lead-calcium alloy has the indexes such as the tensile strength, the density, the hardness and the corrosion resistance being basically consistent with those of a lead-calcium alloy prepared from nativeelectrolytic lead, and the use requirement of the lead-calcium alloy of the storage battery is met. The process method for producing the high-tin-lead-calcium alloy by utilizing the waste lead grid mesh of the waste lead-acid storage battery has the advantages of simple process, convenience in operation, high production efficiency, capabilities of effectively utilizing valuable metal tin in the waste lead grid mesh and reducing the production cost for preparing the lead-calcium alloy, no smoke or odor during the antimony and arsenic removal reaction process at the same time, and favorable working environment.

Description

technical field [0001] The invention relates to the field of comprehensive recovery and utilization of waste lead-acid batteries, in particular to a method for using waste lead-acid storage batteries [0002] A process for producing high-tin-lead-calcium alloys from pool waste lead grids. Background technique [0003] 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 alloys have 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. Studies have found that lead-calcium alloys have Small resistivity, good electrical conductivity and excellent mechanical st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B13/02C22B13/06C22C1/03C22C11/06H01M10/54
CPCC22B7/001C22B13/025C22B13/06C22C1/03C22C11/06H01M10/54Y02P10/20Y02W30/84
Inventor 杨春明
Owner JIANGSU NEW CHUNXING RESOURCE RECYCLING CO LTD
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