Method for producing manganese-zinc ferrite particle material and mixed carbonate utilizing waste dry battery

A technology of manganese-zinc ferrite and waste dry batteries, which is applied in the direction of battery recycling, recycling technology, and regeneration of useful parts, and can solve problems such as complex separation process, low recovery rate, and high added value of manganese-zinc ferrite particles , to achieve high economic benefits and less investment in equipment

Inactive Publication Date: 2005-09-28
张晓东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The added value of manganese-zinc ferrite pellets is high, and the raw materials used also require high purity. Every element raw material used in it is required to be completely separa...

Method used

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  • Method for producing manganese-zinc ferrite particle material and mixed carbonate utilizing waste dry battery
  • Method for producing manganese-zinc ferrite particle material and mixed carbonate utilizing waste dry battery

Examples

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Embodiment 1

[0026] Take two parts of 4 kg of broken waste dry batteries, wash them twice with demineralized water, separate and wash the water after sedimentation, add 25 liters of waste sulfuric acid (containing 180g / l of sulfuric acid) from a titanium dioxide factory to one part, and add 25 liters of industrial sulfuric acid to the other part. liters (containing sulfuric acid 180g / l), and then heating and leaching, the leaching temperature is 80-85°C, and the leaching time is 4 hours. After the reaction is completed, the pH value of the solution is about 1, and 60 milliliters of 8% ammonium sulfide solution is added dropwise and stirred for 2 hours, and then the large particles are sieved out and then filtered. The filtrate is about 22 liters, and the mercury content is less than 0.05 mg / liter. Add Fe containing 100 grams of iron in the filtrate 2 (SO 4 ) 3solution, heated to a reaction temperature of 90-95° C., and a reaction time of 3 hours, then filtered after cooling down. Add 30...

Embodiment 2

[0028] Take 4 kg of broken waste dry batteries, wash them twice with demineralized water, separate and wash the water after sedimentation, add 52 liters of industrial sulfuric acid (containing 180 g / l of sulfuric acid), and then add 2.8 kg of iron sheets magnetically separated from waste dry batteries, and then heat and leach , the leaching temperature is 80-85°C, and the leaching time is 4 hours. After the reaction is completed, the pH value of the solution is about 1, and 60 milliliters of 8% ammonium sulfide solution is added dropwise and stirred for 2 hours, and then the large particles are sieved out and then filtered. The filtrate is about 50 liters, and the mercury content is less than 0.05 mg / liter. Add 100 grams of Fe containing iron in the filtrate 2 (SO 4 ) 3 solution, heated to a reaction temperature of 90-95° C., and a reaction time of 3 hours, then filtered after cooling down. Add 30 grams of iron powder to the filtrate for replacement, and then add 15 grams o...

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Abstract

The present invention is characterized by that utilizing waste sulfuric acid or industrial sulfuric acid to soak the broken waste dry battery, utilizing sulfurization process to make the mercury in the form of mercuric sulfide be centralized in the filter residue, then making treatment, making the filtrate oxidation, heating, replacement, hydrolysis and purification, then utilizing sulfate solution to make neutralization, precipitating, washing and drying so as to obtain mixed carbonate for preparing manganese-zinc ferrite granule material, concentrating and crystallizing the neutralized mother liquid to produce ammonium sulfate, in the process, adding a certain quantity of iron and manganese elements and making the obtained mixed carbonate pre-combustion and granulation so as to obtain manganese-zinc ferrite granule material product.

Description

Technical field [0001] The invention is a method for producing manganese-zinc ferrite granular material and mixed carbonate by utilizing waste dry batteries. The field of the present invention is the technical field of resource regeneration. Background technique [0002] my country is a big producer and consumer of dry batteries, with an annual output of nearly 20 billion, ranking first in the world. Waste dry batteries contain mercury, cadmium, zinc, lead and other heavy metals listed in the "National List of Hazardous Wastes". Therefore, if they are not treated and discarded, they will seriously pollute the environment and damage human health. In terms of resources, based on 10 billion waste dry batteries, it contains about 150,000 tons of zinc, 220,000 tons of manganese dioxide, 150,000 tons of iron, 2,000 tons of copper, 43,000 tons of carbon rods, etc., and its resource value is quite considerable. In particular, the "Waste Battery Pollution ...

Claims

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Application Information

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IPC IPC(8): H01M6/52
CPCY02E60/12Y02W30/84
Inventor 张晓东
Owner 张晓东
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