Mobile phone lithium battery can not be thrown casually

The expansion of the lithium battery is normal, indicating that the lithium battery is aging and does not store electricity. This is normal and there is no safety hazard.

The reason for the drum kit:

A small amount of gas is generated inside the battery during charging and is generally absorbed during discharge. If the charging current is too large, the overcharging will increase the gas generation and increase the internal pressure of the battery to cause swelling. A slight bulging of the battery is allowed. Avoiding overcharging is the key to reducing bloating. Of course, the quality of mobile phone batteries is also very important. Nowadays, many batteries on the market are shoddy, so it is not unusual to have a drum kit.

How to handle used batteries simply and environmentally? 1 Handed over to the neighborhood committee 2, there seems to be an activity to recycle old batteries for gifts. 3 handed over to the waste recycling station. Harm of used batteries Harmfulness of used batteries: The hazards of used batteries are mainly concentrated on a small amount of heavy metals contained in them, such as lead, mercury, cadmium, etc. These toxic substances enter the human body through various means, and long-term accumulation is difficult to eliminate, damage the nervous system, hematopoietic function and bones, and even cause cancer. Lead: the nervous system (neurasthenia, numbness of the hands and feet), the digestive system (dyspepsia, abdominal cramps), blood poisoning and other pathological changes. Mercury: A change in mental status is a major symptom of mercury poisoning. Pulse speed, muscle twitching, oral and digestive system lesions. Cadmium, manganese: mainly damage the nervous system. Ways of recycling used batteries to the environment: The constituent materials of these batteries are sealed inside the battery case during use and do not affect the environment. However, after long-term mechanical wear and corrosion, the internal heavy metals and acid and alkali leak out, and when they enter the soil or water source, they will enter the human food chain through various channels. The process is briefly described as follows: pool soil microbial animal circulating dust crop food human nerve deposition disease. Experts believe that due to the long cycle and concealing characteristics of battery pollution, the potential hazard is quite serious, and improper treatment will cause secondary pollution. According to Dr. Yang Yifu, some farmers in a coastal province of China have lost lead in recycling lead-acid batteries. Because of improper recycling, the waste liquid containing lead and sulfuric acid is dumped, which not only causes lead poisoning, but also prevents local crops from growing. One cell of the first one is rotten in the ground, which can permanently lose the value of 1 square meter of soil; a button cell can pollute 600 tons of water, equivalent to the amount of water a person has in his lifetime. A button battery can pollute 600,000 liters of water, which is equal to the amount of water a person can drink in a lifetime. A battery is rotten in the ground, which can make one square meter of land useless, so it is not too much to say that a section of used batteries is a "pollution bomb". The ordinary dry batteries we use every day are mainly acidic zinc-manganese batteries and alkaline zinc-manganese batteries. They all contain various metal substances such as mercury, manganese, cadmium, lead, zinc, etc. After the discarded batteries are abandoned, the outer casing of the battery will Slowly corrosive, the heavy metal substances will gradually penetrate into the water and soil, causing pollution. The biggest characteristic of heavy metal pollution is that it cannot be degraded in nature, and it can only be eliminated by purification. The hazards of used batteries are mainly concentrated in the small amount of heavy metals contained in the metal species. The manganese excess is accumulated in the body to cause neurological dysfunction, and the early manifestations are comprehensive dysfunction. The heavier ones have two legs, the language is monotonous, the expression is dull, the feelings are indifferent, often accompanied by mental symptoms. Salts of zinc and zinc can precipitate proteins and have a stimulating effect on mucous membranes. When the concentration in water exceeds 10-50 millis/liter, there is a risk of cancer, which may cause chemical pneumonia. Lead: Lead mainly acts on the nervous system, the blood circulation system, the digestive system, and the liver, kidney and other devices to inhibit the anabolic process of hemoglobin. It can also directly act on mature red blood cells, which has a great impact on infants and young children. It will lead to children's physical growth retardation. Chronic lead poisoning can lead to mental retardation in children. Nickel-nickel powder dissolves in the blood and participates in the circulation of the body. It has strong toxicity, can damage the central nervous system, cause vascular variability, and cause cancer in severe cases. Mercury is the most worthy of among these heavy metal pollutants. This heavy metal is not harmful to humans. For a long time, when producing dry batteries in China, we must add a toxic substance - mercury or mercury. Compounds, the content of mercury in alkaline dry batteries in China is 1-5%, and that in neutral dry batteries is 0.025%. The mercury used in the production of dry batteries every year has obvious neurotoxicity, and it also has adverse effects on endocrine system and immune system. In 1953, the water plague that shocked the world in Kyushu, Japan, sounded the alarm of mercury pollution. Heavy metal pollution threatens human health. If humans ignore the control of heavy metal pollution, they will eventually swallow the bitter fruit of their own brewing. Therefore, it is increasingly important to strengthen the recycling of used batteries.

The traditional recycling idea is to separate various metal elements and then make it to metal salts for sale, such as lithium carbonate and lithium oxalate. The idea is suitable for small-scale recycling factories because it is simple and convenient. The current popular idea is the so-called closed-loop processes,which is the manufacturer will recycle it and re-create it after a battery is discarded. The battery then will be re-invested in the market. Although this idea sounds very attractive, as far as I know, there is currently no big battery manufacturer to use it.

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