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It is understood that this is not the first safety accident staged by Hunan Bangpu. In April 2019, a fire broke out at the Hunan Bangpu new factory under construction. According to insiders, although there were no casualties in the accident, the fire situation was also relatively serious, caused by improper management during the construction process.

At present, Hunan Bangpu is in a state of production suspension and rectification. The reporter called Chen, the leader in charge of battery disassembly in Hunan Bangpu, and the other party hung up the phone on the grounds of "not understanding the situation".

There are risks associated with multiple links

The company needs to raise safety awareness

With the increase in the number of new energy vehicles, the industry is expected to experience a wave of power lithium-ion battery retirement around 2020. There is no doubt that safety is the top priority to ensure the healthy and orderly development of the power lithium-ion Battery recycling recycling industry.

What are the risks in the process of power lithium ion Battery recycling? Li Jian said that at present, the hydrometallurgical process is important for the recovery of power lithium-ion Battery recycling in China, and there are certain risks in disassembly, crushing, low-temperature pyrolysis, extraction and other links. For example, accidental short circuits, battery damage, etc. may cause fires, especially during the disassembly process of individual units, which poses a higher risk. Many companies would disassemble batteries after discharge, which is wise. However, some batteries have built-in safety structures that prevent incoming calls and cannot be detected externally. Such individual batteries can be crushed and the electrolyte leaks and evaporates, resulting in a high concentration. If the dismantling equipment or workshop is relatively closed, encountering batteries that have not been fully discharged, sparks may occur, and even ignite or detonate. The negative electrode material of lithium-ion batteries is relatively active and hot at low temperatures There is also a possibility of spontaneous combustion when stacked together before dissolution; The low-temperature pyrolysis temperature is around 400-500 degrees Celsius, and a large amount of electrolyte volatilizes. If the atmosphere is not properly controlled and air enters, it is also very dangerous

To prevent the occurrence of safety issues, Tang Xiaolin believes that doing a good plan can avoid many problems, such as using specialized vehicles for transportation and storage; Timely discharge the battery, reduce activity, etc. At present, there are many small workshops in Dongguan City, Guangdong Province, Yongxing County, Hunan Province and other places. The manual dismantling of lithium ion batteries is very dangerous and harmful to human health. These workshops are scattered, and often mobile operations are difficult to manage. "Competent authorities should further strengthen law enforcement. Battery recycling should be handed over to the Regular army."

"The state attaches great importance to the recovery and utilization of power lithium-ion Battery recycling, but it is difficult to specifically require the process safety of each company, which is generally implemented by the local safety assessment and environmental assessment departments. The key to ensuring the safety of recovery and utilization is that the company should have a sense of safety precautions and strengthen safety training for employees." Li recommended that the workshop should be kept ventilated smoothly, and the atmosphere of disassembly and low-temperature pyrolysis control should not be judged by relevant experience, There should be corresponding atmosphere probes and warning instruments, and the effectiveness of the probes and instruments should be regularly checked. In addition, the power lithium ion Battery recycling recycling process is still in the development stage, so innovation should be encouraged, and different technologies should complement each other.

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