Method for recovering zinc and manganese by waste dry batteries and directly preparing desulfurizer for industry

A dry battery and desulfurizer technology, applied in battery recycling, recycling technology, separation methods, etc., can solve the problems of difficult process processing, economic infeasibility, complicated procedures, etc., to simplify the processing process, eliminate secondary pollution and energy. The effect of consumption and pollution reduction

Inactive Publication Date: 2009-09-16
南京强实精细化工技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method needs to be separated several times in the process. The process is difficult to handle
[0005] The dry and wet method combines the advantages of the dry method and the wet method, and the effect is better, but the process is complicated and the cost is high
[0006] Various recycling methods reported both at home and abroad at present, such as: "Research on Co-precipitation of Waste Alkaline Batteries to Prepare Manganese-Zinc Ferrite" by Xi Guoxi et al. ), Cui Peiying et al.'s "Research on the Preparation of Zinc-Manganese Compound Fertilizers Using Waste Batteries" (see: Chemistry World No. 1 P53), Cheng Jianliang et al. Volume 22, No. 1, February 2004), Zhao Dongjiang et al.'s "Research on the Recycling of Waste Zinc-Manganese Batteries" (refer to: Applied Chemicals, Volume 34, No. 10, October 2005), etc., due to high cost, economical Due to reasons such as technical impossibility or technical defects, there is no recycling technology for waste zinc-manganese batteries that is really suitable for industrialization

Method used

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  • Method for recovering zinc and manganese by waste dry batteries and directly preparing desulfurizer for industry
  • Method for recovering zinc and manganese by waste dry batteries and directly preparing desulfurizer for industry

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Embodiment 1. Preparation of a mixture of metal oxides

[0031] Clean the zinc-manganese waste batteries of different specifications and models collected from the sanitation department with water, dry them, cut them manually, and soak them in dilute sulfuric acid with a concentration of 3.4M. The volume ratio of waste batteries to dilute sulfuric acid is 1: 6. After soaking for 6 hours, start heating, control the temperature at 70-75°C for 6 hours to make the acid leaching reaction complete, stop stirring and heating. After filtering to remove the dregs, the liquid is neutralized and precipitated with a sodium carbonate solution with a concentration of 10% (Wt). In order to ensure that the neutralization reaction is complete, the temperature is controlled at 70 ° C for 1 hour. After the neutralization solution is left to stand for a period of time, it is filtered Solid-liquid separation was carried out, and the solid was dried and calcined at 450°C to obtain 502 grams o...

Embodiment 2

[0032] Example 2. Preparation of a mixture of metal oxides

[0033] Wash the zinc-manganese waste batteries of different specifications and models collected from the environmental sanitation department with water, dry them, cut them manually, and soak them in dilute sulfuric acid with a concentration of 3.86M. The volume ratio of waste batteries to dilute sulfuric acid is 1: 6. After soaking for 4 hours, start heating, control the temperature at 80-85°C for 4.5 hours to make the acid leaching reaction complete, stop stirring and heating. After filtering to remove the dregs, the liquid is neutralized and precipitated with a sodium carbonate solution with a concentration of 20% (Wt). In order to ensure that the neutralization reaction is complete, the temperature is controlled at 75 ° C for 1 hour. After the neutralization solution is allowed to stand for a period of time, it is filtered Solid-liquid separation was performed, and the solid was dried and calcined at 450°C to obta...

Embodiment 3

[0034] Example 3. Preparation of a mixture of metal oxides

[0035] Wash the zinc-manganese waste batteries of different specifications and models collected from the environmental sanitation department with water, dry them, cut them manually, and soak them in dilute sulfuric acid with a concentration of 5.15M. The volume ratio of waste batteries to dilute sulfuric acid is 1: 6. After soaking for 2 hours, start heating, control the temperature at 85-90°C for 3 hours to make the acid leaching reaction complete, stop stirring and heating. After filtering to remove the dregs, the liquid is neutralized and precipitated with a sodium carbonate solution with a concentration of 30% (Wt). In order to ensure that the neutralization reaction is complete, the temperature is controlled at 80°C for 1 hour. After the neutralization solution is left to stand for a period of time, it is filtered Solid-liquid separation was carried out, and the solid was dried and calcined at 450°C to obtain 55...

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Abstract

The invention discloses a method for recovering zinc and manganese by waste dry batteries and directly preparing a desulfurizer for industry, which comprises the following steps that: manganese, zinc and iron of crushed waste zinc-manganese dry batteries are dissolved by dilute sulfuric acid, an undissolved substance is removed through the filtration, filtrate is neutralized by a sodium carbonate solution to produce precipitate, the precipitate is dried and then is baked to obtain a mixture of metal oxides, hydroxymethyl cellulose, No.425 cement, and attapulgite are added into the mixture to be mixed evenly, a proper amount of water is added for kneading, the band extrusion is performed on a banded extruder, and the obtained product is dried at a temperature of between 95 and 110 DEG C and is baked at a temperature of 300 DEG C to obtain the desulfurizer for industry. Compared with similar products at home and abroad, the performance index of iron-manganese-zinc series desulfurizers produced by adopting a reclaimed material of waste zinc-manganese batteries has the characteristics of high component content, high breakthrough sulfur capacity, moderate side pressure strength and low abrasion wear, various technical indexes all reach the technical indexes of the similar products at home and abroad, and the main index is better than that of the similar products at home and abroad. The method can meet the need of industrial use, and can be popularized and applied as industrially practical novel purifying agents.

Description

technical field [0001] The invention relates to resource recovery and utilization of zinc-manganese dry batteries, in particular to a method for preparing an industrial desulfurizer from ferro-zinc manganese recovered from waste zinc-manganese batteries. Background technique [0002] Zinc and manganese dry batteries are disposable power sources, the negative electrode is zinc, and the main components of the positive electrode carbon package are: carbon rod, manganese dioxide, carbon powder, acetylene black, ammonium chloride, zinc chloride, electric paste and iron shell, etc. The recycling of waste batteries is a worldwide issue. So far, there is no generally accepted economical and effective comprehensive utilization process for recycling waste zinc-manganese batteries. Batteries are a necessity closely related to ordinary people and play a big role in people's lives. There are also many products that use batteries as energy sources. However, the widespread use of batteries...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B3/08B01D53/50
CPCY02E60/12Y02P10/20Y02W30/84
Inventor 沈凯白志平叶飞
Owner 南京强实精细化工技术有限公司
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