1 death 20 injuries, how to do the power lithium battery recovery?

　　Author ：Iflowpower – Постачальник портативних електростанцій

Recently, Hunan Bangpu Circular Technology Co., Ltd. (hereinafter referred to as "Hunan Bangpu") exploded, causing 1 death, 20 injuries, 6 people were hurt.

From the video from the video, the fire is violent, and huge mushroom clouds, causing great attention to society. In fact, the safety problem of power lithium-ion battery recycling industry is not fresh. "It's just that this accident is very serious, and it is a subsidiary company of Ningde Times, pays attention to more.

After many small accidents, the place was dealt. "Industry insiders frankly, the safety of dynamic lithium-ion battery recycling is to be strengthened. So, what is the current risk of my country's dynamic lithium-ion battery recycling? How can I prevent similar issues to happen again? (文 本 报者)) "Insufficient understanding of unknown danger" is not in place, Hunan Bang Pubbae Guangdong Bangpu Circuit Technology Co.

, Ltd. (hereinafter referred to as "Bangu Circulation") announced that the cause of fire It is the explosion of the waste aluminum foil in the old factory waste residue, and the company is fully cooperating with relevant departments. Where does the waste aluminum foil come? Tang Xiaolin, senior researcher, recycling of lithium ion battery, has been dismantled, broken, and pyrolysis, it will receive black powder, copper foil and aluminum foil, black powder recovery, copper, aluminum, respectively, for copper smelting and aluminum smelting.

"At the beginning, the industry guess is the fire caused by extractants, ammonia or lithium-ion battery packs, but the possibility is relatively large, but I didn't expect it to be a waste aluminum foil. "Tang Xiaolin is clearly said that battery recycling companies generally have weak prevention awareness of aluminum foil, and many units of employee training ignore this part. Therefore, when the accident occurs, there is no disposal plan, and the employee mistakenly splashing the fire, which has caused such serious consequences, "should be placed around the waste aluminum foil or gravel.

Power lithium-ion battery recycling is an emerging industry, and understands some unknown dangerous understandings. The accident also sounded the alarm for the entire battery recovery industry. Li recommended Li Hui, Professor, School of Materials Science and Engineering, Central South University, told reporters that aluminum, especially the fine aluminum powder is more lively in the case of heating, and hydrogen will occur in the water.

Winter workshops is relatively close, hydrogen accumulation to a certain amount of burning. It is understood that this is not the first safety accident in Bangpu, Hunan. In April 2019, Hunan Pangpu New Factory under construction has taken a fire.

Informed people revealed that although there is no casualties in this accident, the fire situation is also serious, it is caused by improper management during construction. At present, Hunan Bangpu is already in a stop production and rectification state. The reporter called the leaders of the Hunan Pu Pugeni battery dismantling Chen, and the other party was hanging up by "not understanding".

"Multi-link existence risk" should improve security awareness with new energy vehicle insurance, the industry is expected to have a powerful lithium-ion battery to retire. There is no doubt that it is necessary to protect the health and orderly development of the dynamic lithium-ion battery recycling industry, safety is a big event. What is the risk in the process of dynamic lithium-ion battery recovery? Li Shi said that there is currently a rheumatic metallurgy process in my country's powered lithium-ion battery.

For example, it is not careful to short the short circuit, battery damage, etc. may cause a fire, especially in the process of monomer dismantling. "Many companies will disassemble the battery after dischaplizing the battery.

However, some battery has a built-in insurance structure, can't be put out, and the outside is not detected; such a single battery takes a crushing, the electrolyte leaks volatilizes, the concentration is high, if the dismantling equipment or workshop is relatively closed, there is no Fully discharged batteries may have sparks, even ignition, detonation. The negative electrode material of the lithium-ion battery is relatively active, and there is a self-ignition in front of the low-temperature thermal solution; the low temperature thermolys solution temperature is about 400-500 degrees, and the electrolyte is volatilized. If the atmosphere is controlled, there is air entering, very dangerous.

"To eliminate the occurrence of security issues, Tang Xiaolin believes that doing a good plan can avoid many problems, such as transportation, storage; timely discharge, reducing activity, etc. At present, there are many small workshops in Dongguan City, Hunan Yongxing County, Hunan, and the manual disassembly of lithium-ion batteries. It is very dangerous and harmful to human health.

These workshop layout disperse, often mobile operations are difficult to manage, "The competent department should further strengthen law enforcement. Battery recycling is handed over to 'Regular Army'. "The state attaches great importance to the recycling of dynamic lithium-ion battery, but it is difficult to specifically require the process safety of each company, and generally be announced by local announcement, the EIA department is implemented.

The key to safeguarding the safety of recycling is that the company must have awareness of safety and strengthen employee safety training. "Li Shi suggests, let the workshop maintain a smooth, dismantling and low temperature hot solution control atmosphere can not rely on related experience to judge, there must be corresponding atmosphere probes, early warning instruments, and often check the probe, the effectiveness of the instrument. In addition, the dynamic lithium-ion battery recovery process is still in the development stage, to encourage innovation, and different technologies must be complementary.

"Accidents will not cause material price increase", after the production of over-producing industry, Hunan Baipu explosion accident, also triggered the industry's concerns about materials prices. Industrial and commercial information shows that Hunan Bangpu was established in 2008, located in Changsha, Hunan Province, accounts for 130,000 square meters, which is currently a high-tech company, my country's large-scale waste lithium-ion battery resource recovery and high-end battery material production. The total amount of waste batteries in Hunan Pangnian recycling has exceeded 6,000 tons, and the annual production of nickel-watery hydroxide (three-membered precursor), nickel-watery (three-membered material), lithium cobaltate, cobalt chloride, nickel sulfate However, cobalt sulfate and tetrashydoxide of 4,500 tons, the annual recycling demolition of the annihilation of 20,000, recycled and renewable steel furnace materials 18,000 tons, 900 tons of non-metallic metals, non-metallic and other materials 5,000 tons.

According to the data, the Ningde Times Holdings Bangpu cycle is 52.88%, and the Bangpin is important in Ningde Times. Among them, the lithium-ion battery material business in Ningde Times, is important to carry out the Bangpu cycle.

That is to say, the waste of Ningde Times basically handed over to Bangp circular core industrial plate Hunan Bangpu treatment. "Hunan Bangpu and Greenmei, Zhongwei Shares is the three major country materials companies. "Tang Xiaolin said that Hunan Bangpu has strong strength, suspension of production has a certain impact on the three-dollar precursor, but the overall production of the three-yuan precursor industry in my country is in the abundant production, even if the industry chain price is fluctuating, it will be very limited.

Ningde Times also announced that there has been requested that all units including Hunan Baopu have strictly implemented safety responsibilities, hidden danger investigation, and ensure subsequent safety production. .