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Recovery treatment method for Mn containing waste batteries

A waste battery, recycling technology, applied in the direction of battery recycling, waste collector recycling, recycling technology, etc., can solve the problem of inability to solve the recycling and processing of waste lithium-ion batteries, low content of valuable metals in slag phase, no reuse, etc. , to achieve significant comprehensive benefits, improve economic benefits, and enhance the effect of value

Active Publication Date: 2015-07-22
CHANGSHA RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned processes are all proposed for the treatment of waste lithium-ion batteries without Mn, and cannot solve the recycling process of a large number of waste lithium-ion batteries containing Mn. In addition, the above-mentioned processes all use CaO-Al 2 o 3 -SiO 2 Ternary system, FeO-CaO-SiO 2 -Al 2 o 3 Quaternary system and FeO-SiO 2 -Al 2 o 3 Ternary system slag-type smelting, the slag phase has extremely low valuable metal content, basically has no reuse value, and can only be used as building materials. The economic benefits of the process need to be further improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for recycling waste batteries containing Mn of the present invention, comprising the following steps:

[0028] (1) material preparation

[0029] Prepare waste batteries containing Mn and slagging agents containing Si. The Mn-containing waste batteries used in this example are composed of Mn-containing waste polymer lithium ion batteries (Cu 9 wt.%, Co 5 wt.%, Ni 1 wt.%, Al 15 wt.%, Fe 1wt.%, Mn 22 wt.%, C 19 wt.%) and almost no Mn-containing scrap steel lithium-ion batteries (Cu 8 wt.%, Co 15 wt.%, Ni 2 wt.%, Al 5 wt.%, Fe 30 wt.%, Mn 0.2 wt.%, C 11 wt.%), of which, Mn-containing waste polymer lithium-ion batteries accounted for 70%. The slagging agent in this example is made of copper smelting slag (Cu 0.8 wt.%, Fe 36.9 wt.%, SiO 2 34.5 wt.%, Al 2 o 3 4.5 wt.%, CaO 8.5 wt.%) and silica (SiO 2 98 wt.%), of which copper slag accounts for 57% and silica accounts for 43%. The effective slag-forming element is only Si, but copper smelting slag inevitably c...

Embodiment 2

[0034] A method for recycling waste batteries containing Mn of the present invention, comprising the following steps:

[0035] (1) material preparation

[0036] Prepare waste batteries containing Mn and slagging agents containing Si. The Mn-containing waste batteries used in this example are composed of Mn-containing waste polymer lithium ion batteries (Cu 9 wt.%, Co 5 wt.%, Ni 1 wt.%, Al 15 wt.%, Fe 1wt.%, Mn 22 wt.%, C 19 wt.%) and almost no Mn-containing waste aluminum lithium-ion batteries (Cu 8 wt.%, Co 16 wt.%, Ni 2 wt.%, Al 35 wt.%, Fe 1wt.%, Mn 0.1 wt.%, C 10 wt.%), of which, Mn-containing waste polymer lithium-ion batteries accounted for 50%. The slagging agent in this example is only manganese ore (Mn 33 wt.%, Fe 7 wt.%, SiO 2 33 wt.%, Al 2 o 3 3.5 wt.%, CaO 2.9 wt.%), the effective slag-forming elements are Mn and Si, but the additional Fe is not a slag-forming element and does not affect the subsequent slag properties. In addition, the amount of slagging ag...

Embodiment 3

[0041] A method for recycling waste batteries containing Mn of the present invention, comprising the following steps:

[0042] (1) material preparation

[0043]Prepare waste batteries containing Mn and slagging agents containing Si. The Mn-containing waste batteries used in this example are composed of Mn-containing waste polymer lithium ion batteries (Cu 9 wt.%, Co 5 wt.%, Ni 1 wt.%, Al 15 wt.%, Fe 1wt.%, Mn 22 wt.%, C 19 wt.%) and almost no Mn-containing waste aluminum lithium-ion batteries (Cu 8 wt.%, Co 16 wt.%, Ni 2 wt.%, Al 35 wt.%, Fe 1wt.%, Mn 0.1 wt.%, C 10 wt.%), of which, Mn-containing waste polymer lithium-ion battery materials accounted for 50%. The slagging agent in this example is pyrolusite (Mn 33 wt.%, Fe 7 wt.%, SiO 2 33 wt.%, Al 2 o 3 3.5 wt.%, CaO 3.3 wt.%), poor manganese ore (Mn 16 wt.%, Fe 11 wt.%, SiO 2 18 wt.%, Al 2 o 3 3.6 wt.%, CaO 5.6 wt.%) and silica (SiO 2 98 wt.%), in which pyrolusite accounts for 55%, poor manganese ore accounts fo...

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Abstract

The invention discloses a recovery treatment method for Mn containing waste batteries. The method includes the steps of: (1) preparing Mn containing waste batteries, additionally preparing a slag former, which at least contains 10wt.% of Si; and (2) putting the prepared various materials into a smelting furnace to conduct smelting to produce alloy containing Co and / or Ni, Mn containing slag and flue dust. By controlling the oxygen partial pressure in the smelting furnace, the smelting temperature and smelting time, the smelting produced Mn containing slag has an Mn content of greater than or equal to 15wt.%, the Fe content is smaller than or equal to 5wt.%, the Al2O3 content is less than or equal to 30wt.%, and Mn / SiO2 is greater than or equal to 0.2 and smaller than or equal to 3.0. The recovery treatment method provided by the invention has better comprehensive economic benefits and environmental benefits.

Description

technical field [0001] The invention relates to the technical field of resource recovery and environmental protection, in particular to a method for recycling waste lithium-ion batteries and related materials. Background technique [0002] Lithium-ion batteries have been widely used in portable digital devices such as mobile phones, MP3 players, and cameras because of their high energy density, high operating voltage, and no memory effect. With the upgrading of digital products, a large number of waste aluminum-cased lithium-ion batteries are produced. Lithium-ion batteries are rich in valuable metals such as cobalt, nickel, and copper, and the content of cobalt and nickel is as high as 10 wt.%. The improper disposal of a large number of waste lithium-ion batteries not only causes a huge waste of resources, but also causes serious environmental problems due to the rich heavy metals and organic substances. Therefore, it is necessary to develop advanced waste battery recycli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B23/00C22B47/00H01M10/54
CPCY02P10/20Y02W30/84
Inventor 肖松文任国兴潘炳樊友奇夏星
Owner CHANGSHA RES INST OF MINING & METALLURGY
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