Dynamic lithium-ion battery recycling, which process is better?

　　Author ：Iflowpower – Portable Power Station Supplier

According to the report forecast of my country's Automobile Technology Research Center, by 2020, the power lithium-ion battery is about 320,000 tons, and even some battery peers estimated that the amount of scrap will reach 500,000 tons. With the continuous increase in the amount of power of the power lithium ion battery, the battery recovery is likely to reach a market share of 10 billion dollars in the future. This can be said to be a big cake.

Why is the battery be recycled? Some people reclaim the battery as the "last kilometer" of the new energy automotive industry. The powerful lithium-ion battery recovery is the first is a security problem. From an environmentally friendly perspective, the lithium-ion battery and the lead-acid battery are not contaminated with lead, but it is not equal to no pollution, such as phosphorus, fluorine and other materials.

There is also a very important point. From the perspective of the resource point, do not recover the dynamic lithium-ion battery, new energy vehicles will be difficult to develop. Taking cobalt resources as an example, 95% of cobalt in my country is imported, almost and not the same.

At present, 70% of oil from my country is from imports, which has risen to the resource strategy. If 95% of the cobalt rely on import, it is not more tense, so the power lithium-ion battery must be recycled. Recycling 1: The ladder is used in terms of battery recycling.

The first is the step utilization, which is saving resources. It can also make the battery such that lithium iron phosphate further exerts the heat, which makes it more value in the recovery link, so the rod size is Very worth considering. What is the problem of clutching? If it is very standardized, the recombinant battery is selected, it is quite high.

Moreover, many vehicles are terrible in design, so the battery pack uses a welding method, and the steps are removed, it can be said that it is very difficult, cost is also very high. Another important use is Tower, energy storage, this category power lithium-ion battery can play a lot, this industry is more about more. Other aspects, such as family small storage capacity, electric bicycles, etc.

, is very worthy of attention. Recycling 2: Low-temperature freezing crushing materials are also analyzed, the ingredients inside the ferric lithium ion battery and the ternary lithium ion battery may be slightly different, but it is not too much. These ingredients have wished to recover it in theory, and they want to reduce and control pollution during the recovery process, which is very worth studying.

In terms of foreign battery recycling, the US ToxCo has certain representative, and they have liquid nitrogen freezing technology called low-temperature freezing and pulverizing, in case of less than 100, the battery's electrolyte is solidified, no safety problems, there is no battery The problem of discharge, and the binder in such a low temperature has become very crisp, it is also easy to separate. After the low temperature of the power lithium ion battery, after the wet metallurgy, extract of acid and alkali, the powder material is dissolved, and then the extraction of cobalt salt, acid, etc. Of course, despite this still there will be some incomprehensible difficult to recycle.

Recycling three: Fire Method In addition, there is still a relatively mainstream fire magistrate, another company inMetco in the United States, is a company that is a crucial route with fire-based metallurgy. It has a very important feature that the battery is classified, and after the initial dismantling, it is smelted in the high temperature electric arc furnace. We will unify high temperature smelting, in metallurgy, we call it fire method.

In the high temperature in thousands of degrees, all of the batteries can be burned, such as graphite, carbon black, diaphragm electrolyte, etc. will be burned. Appropriate control can be carried out during the burning process, which allows metal oxides to be reduced to a metal alloy, and simultaneously, like copper, aluminum such as a metal, floating in the form of a metal alloy solution in the form of oxide slag.

The disadvantage of fire-making metallurgical is that there is a high energy consumption, but it has a very important advantage, this craft "appetite" is very good, just what the battery can put in. Recycling 4: Physical Law Recycling Process Our Central South University is mainly based on physical law, there are several important links, the first one is called accurate dismantling, then the material is repaired, our material repair is followed Compared with wet metallurgy, others are dissolved, and we re-synthesize this material. In Central South University, there are some comparative studies of electrical properties and atomization performance, including low temperature performance and magnification performance, which compares the repaired materials to be compared to the materials they bought, and the repaired material cycle performance is 1,700 times.

At the same time, we also compared a lot of impurities. It will definitely have a small amount of impurities in physical law. These impurities have not affected in the controlled range.

In general, the material performance of the physical method recovery process is still close to the newly bought materials. This technology is based on physical law, no pollution, the process is relatively short, we predict the net interest rate will reach 20%, I hope our recycling process can be promoted in the future. .