Process and device for continuous ultrasound desulfurization of scrapped lead paste

A desulfurization process and desulfurization device technology, applied in the direction of dispersed particle separation, chemical instruments and methods, separation methods, etc., can solve problems such as difficult to meet the requirements of the results, poor operating environment, and influence on the stability of the operating process

Inactive Publication Date: 2009-09-02
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Otherwise, it is difficult to keep the solid-phase material in a suspended state all the time. Once the lead-containing substance precipitates, the reaction environment will be relatively deteriorated. If you want to resuspend it, the power consumption will be greater, and the final result will be an increase in energy consumption.
The concentration of materials and reaction conditions in the reaction system are constantly changing, and it is easy to form local differences, which will deteriorate the operation process and control indicators, and even make the results difficult to meet the requirements.
In addition, the quality of each batch of products in the batch method cannot be kept consistent, resulting

Method used

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  • Process and device for continuous ultrasound desulfurization of scrapped lead paste
  • Process and device for continuous ultrasound desulfurization of scrapped lead paste
  • Process and device for continuous ultrasound desulfurization of scrapped lead paste

Examples

Experimental program
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Effect test

Embodiment 1

[0059] The continuous ultrasonic desulfurization process of waste lead plaster comprises the following steps:

[0060] 1). Take the waste lead plaster 1000g wherein the S content is 5.8% (mass) through determination, Na 2 CO 3 210g is continuously added in the waste lead plaster (the molar ratio of Na ions to S ions is 2.2:1);

[0061] 2). First, according to the Na ion: S ion ratio of 1.3:1, take Na 2 CO 3 (the remaining Na 2 CO 3 Add to each reaction chamber in batches); waste lead plaster, Na 2 CO 3 Together with water, make a fluid slurry with solid-liquid weight ratio S / L=3 / 4 in the pulping tank;

[0062] 3). Under the condition of ultrasonic waves, the fluid slurry enters the first reaction chamber from the lower end of the first reaction chamber (or called the first reaction tank) to heat and stir;

[0063] Then it is discharged from the overflow port of the upper end of the first reaction chamber, and enters the second reaction chamber from the lower end of th...

Embodiment 2

[0076] The continuous ultrasonic desulfurization process of waste lead plaster comprises the following steps:

[0077] 1). Get 1000g of waste lead plaster where the S content is 5.8% (mass) after measuring, add Na continuously in the continuous reactor 2 CO 3 200g (the molar ratio of Na ions to S ions is 2.07:1);

[0078] 2). First, according to the Na ion: S ion ratio of 1.4:1, take Na 2 CO 3 (the remaining Na 2 CO 3 Add to each reaction chamber in batches); waste lead plaster and Na 2 CO 3 Together with water, make a fluid slurry with a solid-liquid weight ratio S / L=0.7 in a pulping tank;

[0079] 3). Under the condition of ultrasonic waves, the fluid slurry enters the first reaction chamber from the lower end of the first reaction chamber to heat and stir;

[0080] Then it is discharged from the overflow port of the upper end of the first reaction chamber, and enters the second reaction chamber from the lower end of the second reaction chamber to heat and stir;

[...

Embodiment 3

[0093] The continuous ultrasonic desulfurization process of waste lead plaster comprises the following steps:

[0094] 1). Get 1000g of waste lead plaster where the S content is 5.8% (mass) after measuring, add Na continuously in the continuous reactor 2 CO 3 180g (the molar ratio of Na ions to S ions is 1.87:1);

[0095] 2). First, according to the Na ion: S ion ratio of 1.3:1, take Na 2 CO 3 (the remaining Na 2 CO 3 Add to each reaction chamber in batches); waste lead plaster and Na 2 CO 3 Together with water, make fluid slurry with solid-liquid weight ratio S / L=2 / 3 in the pulping tank;

[0096] 3). Under the condition of ultrasonic waves, the fluid slurry enters the first reaction chamber from the lower end of the first reaction chamber to heat and stir;

[0097] Then it is discharged from the overflow port of the upper end of the first reaction chamber, and enters the second reaction chamber from the lower end of the second reaction chamber to heat and stir;

[00...

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Abstract

The invention relates to a process and a device for continuous ultrasound desulfurization of scrapped lead paste. The process for continuous ultrasound desulfurization of scrapped lead paste comprises the following steps: (1) sodium carbonate or ammonium carbonate is selected as desulfurizing agent, and the desulfurizing agent and the scrapped lead paste are taken according to the mole ratio (1.2 to 2.2:1) of the Na iron or the (NH4)2 iron in the desulfurizing agent to the S iron in the scrapped lead paste; (2) the scrapped lead paste, the desulfurizing agent and water are prepared into flowing pulp with solid-liquid (S/L) weight ratio being equal to 3/5 to 4/5 in a pulping tank; (3) under the condition of ultrasonic wave, the flowing pulp enters a first reaction chamber for heating and stirring from the lower end part in the first reaction chamber, is discharged out from an overflow opening at the upper end of the first reaction chamber, then enters a second reaction chamber for heating and stirring from the lower end part of the second reaction chamber and finally, and is discharged out from a discharging opening at the upper end of an nth (ranging from 3 to 12) reaction chamber after sequent flow for reaction and discharge. The process has the advantages of low cost, small occupied area, continuous production and high efficiency.

Description

technical field [0001] The invention belongs to the technical field of waste lead-acid battery treatment, and in particular relates to a waste lead paste desulfurization process and a device thereof. Background technique [0002] At present, with the substantial increase in the production and use of automobiles, the waste of lead-acid batteries for automobiles has gradually become a source of solid waste that seriously threatens and affects the environment. At the same time, useful metals in waste lead-acid batteries, especially lead metals in large quantities, are also an important resource. Focusing on protecting the environment and fully recycling resources, many technologies have been produced for how to deal with solid waste lead-acid batteries. Among them, there are mainly methods such as fire method, wet method and combination of fire method and wet method. Because there is sulfuric acid in all waste lead-acid batteries, so these methods generally all will carry out...

Claims

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Application Information

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IPC IPC(8): B01D53/48B01D53/75
Inventor 熊祥祖魏世辕李志保张林锋王威李文歆
Owner WUHAN INSTITUTE OF TECHNOLOGY
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