storage battery handling methods of waste battery -

by:MERITSUN     2019-07-01
For example, a factory extracts nickel and cadmium from waste batteries and then recuring nickel, cadmium used in steelmakingFor the production of batteries.There are basically three treatment methods for waste batteries: Curing and burying, storing in waste mines and recycling.The rest of the various types of waste batteries are usually transported to a special toxic and harmful landfill site, but this practice is not only too expensive, but also wasted because there are a lot of useful materials that can be used as raw materials.
Recycling: heat treatment, they are two professional old battery factories in Switzerland, one of which takes the method of sending the ground old battery to the stove for heating, and then can extract volatile Mercury, zinc is also evaporated at higher temperatures, and it is also a precious metal.The fusion of iron and manganese has become the manganese-iron alloy needed for steel production.The plant can handle 2000 tons of waste batteries per year and obtain 780 tons of manganese iron.
400 tons of zinc alloy and 3 tons of mercury.Another factory directly extracts iron from waste batteries and sells manganese oxide, zinc oxide, copper oxide and nickel oxide and other metal mixtures directly as scrap metals.However, the heat treatment cost in Switzerland is high, and it also provides for a small amount of waste battery treatment fees to be charged from the purchase of batteries.
In addition to the lead battery, various types of batteries are dissolved in sulfuric acid, and then various metals are extracted from the solution through \ rion exchange resin, and the raw materials obtained in this way are more pure than the heat treatment method, so the price is higher in the market, and can extract 95% of the various substances contained in the battery.The wet method can omit the sorting segment \ r (because the sorting is a manual operation, it will increase the cost ).Its cost is slightly higher than that of a landfill, but precious metal powders and raw materials will not be discarded and will not pollute the environment.
Vacuum heat treatment method, first of all, the waste battery nickel-cadmium battery needs to be classified, and the waste battery heated in \ ra vacuum, where mercury evaporates rapidly and can be recycled, and then the remaining materials are ground, use a magnet to extract the metal iron, and finally the nickel powder and manganese powder from the remaining powder.The above-Referring to the international main methods for dealing with used batteries, the environmental problems caused by used batteries in China have not been highly valued, so the research and development of waste battery recycling, processing and disposal technology is almost zero, only a few companies have just started in this regard, and China lacks the mature technology to deal with used batteries.\ RIn car lead-Other types of waste batteries are discarded almost as garbage.
Problems and Suggestions in the process of recycling waste batteries, \ r (1) the battery cannot be processed after recycling, \ r generally uses stacking.The battery may leak or spread toxic substances during the accumulation process.(2) due to the existence of various types of batteries, counterfeit products also bring many difficulties to battery recycling, some of which are mercury batteriesBatteries containing cadmiumContains \ r batteries, some with ammonium chloride as electrolyte, and some with zinc chloride as electrolyte.
Therefore, it is recommended that manufacturers use the \ runiform standard to identify the type of battery and contain the main ingredients for recycling.(3) strengthen publicity and enhance public awareness of environmental protection.(4) promote the development of high-tech industries.
Performance environment-Friendly Battery to achieve mercury for ordinary civilian batteries-free.The state should be supported by policies to recycle waste batteries
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