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Recycling and Utilization Method of Waste Dry Batteries

A dry battery, resource-based technology, applied in battery recycling, recycling technology, regeneration of useful parts, etc., can solve problems such as insufficient seepage and rain prevention, human health hazards, pollution of water sources and ecological environment, etc., to achieve convenient and efficient recycling. The effect of high recycling rate and simple treatment process

Inactive Publication Date: 2017-11-21
令狐越 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to random discarding and inadequate anti-seepage and rainproof landfills, a large amount of heavy metals such as zinc, manganese, iron, and cadmium flow out, pollute water sources and the ecological environment, and accumulate into the human body through the food chain, causing harm to human health.

Method used

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  • Recycling and Utilization Method of Waste Dry Batteries
  • Recycling and Utilization Method of Waste Dry Batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0020] Example 1-6: Organic solvent dissolution method

[0021] After physically disassembling and sorting the used batteries (dismantling the classified zinc skin shell, carbon rods, manganese dioxide and mixed solids), take 6 parts of the mixture containing zinc chloride, ammonium chloride and manganese dioxide and crush them separately After reaching 80 meshes, 120 meshes, 180 meshes, 200 meshes, 250 meshes, and 250 meshes, add them to a 100 ml beaker, and then add 50 ml of organic solvent to dissolve them, filter, dry, and weigh to investigate the dissolution. The specific results are listed in in FIG. 1.

[0022] Table 1 The dissolution of the mixture of zinc chloride, ammonium chloride and manganese dioxide in different solvents

[0023] .

[0024] It can be seen from the results in Table 1 that under the above 4 examples, the mixture can achieve a certain degree of dissolution, and its dissolution rate can reach about 50%, and the dissolution rate increases with the increase ...

Embodiment 7-11

[0025] Example 7-11: Hydrochloric acid dissolution-carbonate precipitation method

[0026] Five zinc-manganese dry batteries of the same type were taken for recycling, and they were physically disassembled. After disassembly, the masses of various substances are listed in Table 2. It can be seen from Table 2 that the average mass of a section of No. 1 waste dry battery is 85.48 grams, and the average can recover 12.29 grams of zinc skin, 5.27 grams of carbon rods, 0.14 grams of copper caps and 9.73 grams of alloy shells.

[0027] Examples 7-11 follow as figure 1 Process shown in the process: the solid mixture is separated to obtain crude manganese dioxide, crude zinc carbonate, and liquid with ammonium chloride as the main component, respectively. The quality of the crude manganese dioxide and crude zinc carbonate after drying are listed in Table 3 .

[0028] Table 2 Composition of various substances after physical disassembly of zinc-manganese dry battery

[0029] .

[0030] Table 3...

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PUM

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Abstract

The invention relates to a resource recycling method for waste dry batteries, which belongs to the technical field of secondary batteries. Collect and disassemble waste dry batteries, separate the zinc skin, carbon rod, copper cap and alloy shell for sealing, and then separate and recycle the mixed solids containing manganese dioxide, ammonium chloride and zinc chloride; mix the above The solid can be dissolved. Applying the invention to the recovery and reuse of waste dry batteries, the treatment process is simple, the recovery is convenient, most of the recovered products can be put into secondary use, and the recovery rate is high; the recovered liquid mainly contains ammonium chloride, trace zinc and potassium, The zinc content is about 70mg / L, which can be used as liquid fertilizer.

Description

Technical field [0001] The invention relates to a resource recycling method for waste dry batteries, and belongs to the technical field of secondary batteries. Background technique [0002] With the rapid increase in battery usage, the recycling problem has become more severe. Dry batteries are commonly used in households. Dry batteries contain a lot of useful materials such as zinc, manganese dioxide, and copper. According to reports, if 10 billion batteries are produced nationwide each year, there are 156,000 tons of zinc that can be recycled from these waste batteries, which requires millions of tons of zinc ore to be refined. In addition, there are 226,000 tons of manganese dioxide, 2,080 tons of copper, 27,000 tons of zinc chloride, 79,000 tons of ammonium chloride, and 43,000 tons of carbon rods. Unfortunately, the recovery rate of these materials is only 1%, which causes a great waste of resources. [0003] In addition to the waste of resources caused by waste batteries,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M6/52
CPCY02W30/84
Inventor 令狐越王晶晶
Owner 令狐越