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Sino Science&Technology Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of Lifepo4 batteries,energy storage battery,portable UPS power supply,personalized customization lithium battery pack etc .
Environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery,3.7V lithium polymer battery, NiMH battery , NiCD battery ,Lead acid battery,dry cell battery ,alkaline battery ,heavy duty battery, button cell battery etc. we devote to R&D,innovation ,production & sales
Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2024-03-01 Hits: Popular:AG11 battery
The recycling of used zinc-manganese batteries mainly solves two problems. The first is the recovery of metallic mercury and other useful substances, and the second is the treatment of waste gas, waste liquid and waste residue. After many comparative experiments, we proposed the "roasting-electrolysis" recycling process, which mainly includes processes such as roasting, liquid making, electrolysis, and waste gas and waste residue treatment.
Since mercury metal mainly exists on paste paper and zinc cylinders, in order to facilitate the evaporation of mercury vapor, the waste zinc-manganese batteries are first mechanically cut, and the carbon rods, copper caps, and plastics are sorted out, so that the powder and zinc inside the battery are The cylinder is fully exposed, and the carbon rods, copper caps, and plastics are recycled at the same time. The unrecovered components are sent to a sealed roasting furnace and roasted at a temperature of 600°C for 3 hours without air (thermogravimetric analysis shows that the reaction is completed at 600°C). At this time, the manganese dioxide in the battery has been evenly combined with acetylene black, and is reduced to manganese monoxide during roasting, which is convenient for leaching with sulfuric acid (manganese dioxide must be dissolved with concentrated sulfuric acid and carbon powder at a temperature of 383K ).
The tail gas produced by roasting contains mercury, wax, hydrogenated hydrogen and ammonia. After being exported from the roasting furnace, it passes through the condensation tank to condense and recover most of the mercury vapor. The tail gas enters the spray tank, sprays with water (pH=6), and absorbs Ammonia, carbon dioxide and wax. The spray water is recycled. When the chloride reaches saturation, activated carbon is added to absorb the remaining mercury metal. After filtration and evaporation of the filtrate, chloride crystals are produced. The residual exhaust gas is finally discharged after passing through the bubble tower purifier, which can fully meet the national atmospheric emission standards.
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