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Method for recycling valuable metals in manganese series waste batteries

A technology for waste batteries and valuable metals, which is applied in the field of comprehensive utilization of waste resources and recycling of valuable metals in waste batteries, achieving the effects of high recycling value, simple process and low cost

Active Publication Date: 2012-07-11
GUANGDONG BRUNP RECYCLING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention aims to solve the defects existing in the existing manganese-based battery recycling technology, and discloses a metal recycling method for manganese-based waste batteries. Used for recycling and utilization of lithium-manganese primary batteries and manganese-based lithium-ion secondary batteries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The waste zinc-manganese battery is crushed and sieved, and the waste zinc-manganese battery raw material sampling analysis from the sieve with a particle size of 5-30mm shows that the mass content of zinc in the zinc-manganese battery powder is 28.3%, the mass content of manganese is 18.9%, and the mass content of iron is 28.3%. The carbon content is 7.2%, and the carbon content is 28.8%. First melt 2000g of the zinc-manganese battery powder in a melting furnace, then spray 400g of scrap iron raw materials containing 82% iron and 9% manganese, together with 1600g coal powder, into the melting furnace with 25% oxygen-enriched air, and control the melting The temperature in the furnace is 1450-1500 ℃, smelting for 20 minutes, and the ferromanganese alloy with a total ferromanganese content of 91.5% is produced, and the total recovery rate of ferromanganese reaches 95.6%; the zinc content in the zinc oxide recovered from the flue reaches 63%, and the zinc The recovery rat...

Embodiment 2

[0021] Broken and sieved steel shell manganese-based waste lithium batteries whose positive electrode material is lithium manganese oxide, and took samples from the battery slag with a particle size of 5-30 mm, and found that the mass content of manganese in the battery slag was 18.9%. The lithium content is 1.2%, the iron content is 24.8%, the carbon content is 10.4%, the aluminum content is 5.7%, and the copper content is 7.8%. Melt the aforementioned 2000g of manganese-based waste battery powder in a smelting furnace, then granulate scrap iron with a particle size of 5-30um, which contains 82% iron and 9% manganese, and is made of fine iron powder less than 5um. 200g raw material, water content less than 10%, spray 1600g pulverized coal into the melting furnace with 33% oxygen-enriched air, control the temperature in the melting furnace at 1500-1550°C, smelting for 15 minutes, and the total output of ferromanganese is 91.8% Ferromanganese alloy, the total recovery rate of f...

Embodiment 3

[0024] Crush and sieve a pile of waste batteries containing various types of zinc-manganese batteries, lithium-manganese primary batteries and manganese-based lithium-ion batteries to 5-30mm, and first bond the fine powder of the sieve less than 5mm with 2.5% agent, 6.5% reduced coal, and 10% water to make waste battery particles with a size of 5-30 mm, and then mix them with 5-30 mm sieves for sampling and analysis. It is known that the mixed waste battery raw material contains 39.2% manganese , 6.7% zinc, 8.3% iron, 1.5% lithium, 0.8% nickel, 12.8% carbon, 2.6% aluminum, 3.3% copper. Put 2000g of the above-mentioned mixed waste battery raw materials into the smelting furnace for melting, then add 500g of scrap iron raw materials with 85% iron content, 7% manganese content, and a particle size of 5-30um, and use 25% oxygen-enriched water with 2000g pulverized coal. Air is sprayed into the capacity furnace, the temperature in the melting furnace is controlled at 1600-1700°C, a...

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PUM

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Abstract

The invention discloses a method for recycling valuable metals in manganese series waste batteries. In the method, the manganese, iron, zinc and lithium metal resources in a waste zinc-manganese dry battery, a waste alkaline-manganese battery and a waste lithium-manganese primary battery and a waste lithium ion battery taking lithium manganate or lithium manganate derivative as a positive electrode material are comprehensively utilized by pyrometallurgy and made into products such as manganese-iron alloy and zinc oxide, wherein the total mass of manganese and iron in the prepared manganese-iron alloy reaches over 90%, and the manganese-iron alloy can be applied to steel enterprises and stainless steel enterprises; and the total mass of zinc and lithium in zinc oxide reaches over 40%, and zinc oxide can be applied to wet refining of zinc and lithium. The method disclosed by the invention has the characteristics of high resource utilization and recovery rate, simple technology and high recovery value.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of waste resources, in particular to the field of recycling valuable metals from waste batteries. Background technique [0002] As the types and quantities of portable electronic appliances are gradually increasing, the usage of batteries is also increasing day by day, and the amount of waste batteries produced is also increasing. As we all know, waste batteries contain alkaline, acidic, organic electrolytes, heavy metals such as lead, mercury, cadmium, nickel, cobalt, manganese, copper, etc. If they are not treated effectively, they will cause serious pollution to the environment; through water, The entry of food and air into the human body is also a serious threat to human health; in addition, the random loss of waste batteries is also a waste of resources. Therefore, the effective recycling of waste batteries has dual meanings of economic value and social benefit. [0003] China's res...

Claims

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Application Information

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IPC IPC(8): H01M6/52C22B7/00C22B47/00C22B19/30C22B23/00C22B26/12
CPCY02E60/12Y02P10/20Y02W30/84
Inventor 唐红辉李长东周汉章谭群英刘更好李达飞周游
Owner GUANGDONG BRUNP RECYCLING TECH
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