Handling,methods,waste,battery business, insurance Handling methods of waste battery
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There are basically three handlingmethods of waste battery: curing buried, stored in a waste mine, recycling.The rest of varioustypes of waste batteries are generally shipped to a special toxic and hazardouswaste landfill, but this practice is not only too expensive but also wasteful,because there are a lot of useful materials can be used as raw material.Recycling: heat treatment, they are two specializedprocessing old battery factories in Switzerland, an approach taken by one ofthem is sent the grinding old battery to the furnace to heat, then can extract thevolatile mercury, in higher temperature, the zinc will be evaporated too, it isalso a precious metal. Fusion of iron and manganese become the steel requiredmanganese ferroalloys. The plant can process 2000 tons of waste batteries ayear, obtain 780 tons of manganese ferro-alloys, 400 tons of zinc alloy and 3tons of mercury. Another plant is directly extracted iron from waste battery,and take the manganese oxide, zinc oxide, copper oxide and nickel oxide andother metals mixture as scrap metal directly selling. However, the heat treatmentis high cost, Switzerlandalso provides that charged a small amount of waste batteries processing fee fromeach battery purchase.Wet treatment, in addition to the lead storage battery,various types of batteries are dissolved in sulfuric acid, then by means of theion exchange resin extracted a variety of metals from the solution, the rawmaterial obtained in this way is pure than the method of heat treatment, sothat with a higher price in the market, and 95% of various substances containedin the battery can be extracted. The wet process can be omitted sorting segment(because sorting is a manual operation, will increase the cost). Its cost is slightlyhigher than the landfill, but precious metal powder and raw materialswill not be discarded, it will not pollute the environment.Vacuum heat treatment method, first need to sortout the waste batteries nickel cadmium batteries, the waste batteries heated ina vacuum, wherein the mercury evaporates quickly, can be reclaimed, then grind theremaining material, use magnet to extract metallic iron, finally extract nickelpowder and manganese powder from the remaining powder.The above-mentioned were the international main methodsof handling used batteries, environmental problems caused by waste batteries inChina has not been got highly attention, so the recycling of waste battery, theresearch and development of treatment and disposal technology is almost zero,only a few several companies just starting out in this respect, China is prettylacking of the sophistication and mature technology to process waste batteries.In addition to automotive lead-acid battery being recycling, other types ofwaste batteries are almost discarded as garbage.Problems and suggests in waste battery recycling process,(1) Battery can not be processed after recycling,generally used stacked. The battery may leak or spread toxic substances in thestacking process. (2) because of there are exist various different kinds of battery,counterfeit products, it also bring many difficulty to the battery recycling,some batteries are mercury-containing batteries, some are cadmium-containingbatteries, some of them use ammonium chloride as the electrolyte, and some ofthem take chloride zinc as electrolyte, so that suggest manufacturer use theuniform standard identifies the type of battery and contains the mainingredients for recycling. (3) to strengthen the propaganda, enhance the environmentalawareness of citizens. (4) enhance the development of high-performance environment-friendlybatteries, to achieve ordinary civil battery mercury-free. drecycling waste batteries, thecountry should be given support from policy.Source:http://www.mhcmp.com Article Tags: Handling Methods, Waste Battery, Waste Batteries, Heat Treatment
Handling,methods,waste,battery