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Method for industrializedly recovering zinc and manganese in waste dry cells

A dry cell and waste technology, which is applied in the field of environmentally friendly recycling and production of waste dry cells, can solve the problems of complex process, high recycling cost and difficult control, and achieve the effects of simple process, high recovery rate and low production cost.

Active Publication Date: 2012-06-20
深圳市泰力废旧电池回收技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pyrochemical treatment mainly has problems such as secondary pollution and mercury volatilization is difficult to control, and the recovery rate of zinc and manganese is not high
Wet treatment mainly includes acid-dissolving method or direct electrolysis method, etc. The acid-dissolving method mainly has problems such as high recovery cost, complicated process, and large equipment investment.

Method used

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  • Method for industrializedly recovering zinc and manganese in waste dry cells
  • Method for industrializedly recovering zinc and manganese in waste dry cells
  • Method for industrializedly recovering zinc and manganese in waste dry cells

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Embodiment 1: In the first step, take 0.2 tons of waste dry batteries, use the starter to put 0.2 tons of waste batteries into the bottom of the conveyor belt, start the climbing skirt conveyor belt, and transport 0.2 tons of waste batteries into the first shredder At the same time, inject nitrogen into the first shredder (playing a protective role), and the first shredder is also connected to the dust collector for dust removal; the first shredder crushes the zinc-manganese battery for the first time at the maximum crushing rate for about 1 hour Finally, the fragments whose size is less than 20mm account for more than 93%. At this time, the fragments with a crushing size of more than 20mm are screened out through the mesh screen, and the fragments below 20mm are not broken and put aside. After the first crushing, until the size of the broken pieces is less than 20mm, stop the first shredder, complete the primary crushing, and enter the next crusher for crushing.

[003...

Embodiment 2

[0044] Embodiment 2: Take 0.15 tons of waste batteries, use the starter to put 0.15 tons of waste batteries into the bottom end of the conveyor belt, start the climbing skirt belt conveyor belt, and transport 0.15 tons of waste batteries into the first shredder, and follow-up steps Same as embodiment one.

Embodiment 3

[0045] Embodiment 3: This embodiment is the same as the first three steps of the above two embodiments, the difference is that the air separator is used to select the plastic, and then the magnetic separator is used to select the metal;

[0046] The fourth step is to use the conveyor belt to transport the remaining fragments to the third crusher for three-stage crushing, and at the same time inject nitrogen into the third crusher, and the third crusher is connected to the dust collector to remove dust; the third crusher crushes the remaining fragments until the fragments The size below 8mm accounts for 98%, stop crushing, and then use the conveyor belt to transport to the single-layer vibrating screen. The oversize left by the single-layer vibrating screen is driven by the conveyor belt to enter the air separator to maintain the wind speed of the air separator. Reach 3m / s, separate out the plastic, and recycle the packaged plastic.

[0047] The fifth step is to drive the debri...

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Abstract

The invention discloses a method for industrializedly recovering zinc and manganese in waste dry cells. The method comprises the following steps of: primarily shredding cells and secondarily shredding the cells; drying, screening and recovering partial black carbon powder, and recovering irony metal by magnetic separation; carrying out three-level crushing on broken fragments of the cells; and screening and recovering rest black powder, and winnowing to separate metal powder such as plastics and zinc. The method is a mechanical processing method, so that the waste cell recovery process cannot result in three wastes and secondary pollution and is operated in a full-automatic assembly line manner, the method is simple in process and low in production cost, is used for adsorbing and recovering through a self-made film and favorable for solving the problems that mercury easily volatilizes and is difficult to control and the like, and ensures high recovery rate of various valuable constituents.

Description

technical field [0001] The field of the invention belongs to the environmental protection recycling production technology of waste dry batteries, in particular to the environmental protection recovery technology of zinc-manganese waste dry batteries. Background technique [0002] The world demand for dry batteries continues to grow steadily in various countries. The output of dry batteries in China ranks first in the world. Except for a small part of exports, most of them are in the domestic consumer market. Dry batteries contain valuable metals such as zinc and manganese, and only through effective recycling can the recycling of resources be realized; at present, there are dry methods for dry battery recycling at home and abroad: mechanical crushing; incineration, etc. Among them, only incineration treatment has achieved industrialization, but the energy consumption in the incineration process is large, causing secondary pollution to the environment, and the recovery rate o...

Claims

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Application Information

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IPC IPC(8): H01M6/52B09B3/00
CPCY02E60/12Y02W30/82Y02W30/84
Inventor 张永祥
Owner 深圳市泰力废旧电池回收技术有限公司
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