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Method for rapidly dissolving desulfurated lead paste

A desulfurized lead paste, a fast technology, applied in the field of recycled lead, can solve the problems of low efficiency and slow dissolution speed, and achieve the effects of fast dissolution speed, low equipment and plant costs, and investment in infrastructure construction.

Inactive Publication Date: 2016-12-21
ANHUI NARADA RENEWABLE RESOURCE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lead paste after desulfurization needs to be washed and dissolved with water, but its dissolution rate is slow and the efficiency is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for quickly dissolving desulfurized lead paste, including the following process steps:

[0021] (1) Send the desulfurized lead paste into a reactor capable of forming strong convection, and mix the waste lead paste and the dissolving liquid into a slurry with a mass fraction of 25%-35%; in the reactor, the lead paste will move strongly, and it will be mixed with water. Fully fusion to solve the problem of lead paste precipitation;

[0022] (2) Use a mortar pump to drive the slurry in step (1) into the plate and frame reactor to separate the solution, use a large-head pump to drive the quantitative solution into the plate and frame reactor, and circulate for 10-15 minutes. ;

[0023] (3) The clear liquid finally separated in step (2) is used to prepare the dissolving liquid for dissolution, and the lead paste obtained in the plate and frame reactor is used in the next step.

Embodiment 2

[0025] A method for quickly dissolving desulfurized lead paste, including the following process steps:

[0026] (1) Send the desulfurized lead paste into a reactor capable of forming strong convection, and mix the waste lead paste and the dissolving liquid into a slurry with a mass fraction of 25%-35%; in the reactor, the lead paste will move strongly, and it will be mixed with water. Fully fusion to solve the problem of lead paste precipitation;

[0027] (2) Use a mortar pump to drive the slurry in step (1) into the plate and frame reactor to separate the solution, use a large-head pump to drive the quantitative solution into the plate and frame reactor, and circulate for 10-15 minutes. ;

[0028] (3) The clear liquid finally separated in step (2) is used to prepare the dissolving liquid for dissolution, and the lead paste obtained in the plate and frame reactor is used in the next step.

[0029] The gas generated in the above cycle process is absorbed and reused using a liquid abso...

Embodiment 3

[0031] A method for quickly dissolving desulfurized lead paste, including the following process steps:

[0032] (1) Send the desulfurized lead paste into a reactor capable of forming strong convection, and mix the waste lead paste and the dissolving liquid into a slurry with a mass fraction of 25%-35%; in the reactor, the lead paste will move strongly, and it will be mixed with water. Fully fusion to solve the problem of lead paste precipitation;

[0033] (2) Use a mortar pump to drive the slurry in step (1) into the plate and frame reactor to separate the solution, use a large-head pump to drive the quantitative solution into the plate and frame reactor, and circulate for 10-15 minutes. ;

[0034] (3) The clear liquid finally separated in step (2) is used to prepare the dissolving liquid for dissolution, and the lead paste obtained in the plate and frame reactor is used in the next step.

[0035] The above-mentioned desulfurization lead paste is prepared by the following method:

[0...

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Abstract

A method for rapidly dissolving desulfurated lead paste comprises the following process steps that (1) the desulfurated lead paste is delivered to a reaction still capable of forming severe convection, a dissolving solution is added into the waste lead paste to prepare slurry with a mass fraction of 25-35%; in the reaction still, the lead paste is made to move intensely and fully dissolved in water, and the problem that the lead paste precipitates is solved; (2) the slurry is pumped into a plate frame reactor by using a mortar pump, a solution is obtained after separation is conducted, the quantitative solution is pumped into the plate frame reactor again by using a large lift pump, and circulation lasts for 10-15 minutes; and (3) finally-separated clear solution is used for preparing the dissolving solution, and the lead paste obtained in the plate frame reactor is used for the next working procedure. Compared with other more advanced renewable lead paste recycling processes at home and abroad, the method for rapidly dissolving the desulfurated lead paste is advantageous in that cost of equipment and a plant is low, infrastructure construction investment is reduced, the dissolving speed of the desulfurated lead paste is fast, the effect is good, no pollutant is discharged, and green and efficient recycling is achieved.

Description

Technical field [0001] The invention relates to the technical field of regenerated lead, in particular to a method for rapidly dissolving desulfurized lead paste. Background technique [0002] Despite the continuous development of various new battery technologies today, lead-acid batteries with a development history of more than 150 years still rely on their excellent cost performance, stable electrochemical performance, mature production technology and higher recycling of waste products. Occupy the first place in the secondary battery market. The continuous increase in annual output not only represents the importance of lead-acid batteries to humans, but also means that a large amount of lead is consumed in lead-acid battery products every year. [0003] As a major consumer product in the world, lead-acid batteries have also become the most important lead renewable resource. More than 80% of China's main raw materials for recycled lead come from used lead-acid batteries. As a h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B13/00C22B7/00C22B1/11H01M10/54
CPCC22B1/11C22B7/006C22B13/045H01M10/54Y02P10/20Y02W30/84
Inventor 朱保义任永刚陈华勇吴国庆
Owner ANHUI NARADA RENEWABLE RESOURCE TECH CO LTD
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