The most commonly used batteries in our lives are probably remote controls and children's toys, which are thrown away everywhere when they are used up, causing a great impact on the environment.lithium ion battery assembly However, in recent years, as environmental awareness has increased, used batteries have gradually begun to be categorized and recycled. What is the use of recycling used batteries?

If not managed, old batteries can cause great pollution. According to scientific research, an ordinary battery left unattended in nature can theoretically pollute 600,000 liters of water for the rest of your life. Of course, this is only theoretical, but in reality, heavy metals are difficult to dissolve in water, and it is impossible for them to be uniformly distributed in a body of water.battery cell machine The actual pollution of the environment by heavy metals is far less than the theoretically calculated maximum, but it does reflect the degree of pollution from used batteries.

What can old batteries be recycled for?

One. General recycling of substances

Recycling of ammonium chloride: the black material culture in the battery is put in the water and stirred and filtered, and then the filtrate can be obtained after evaporation technology, a white solid, the white solid material is controlled heating sublimation, collection of ammonium chloride produced.prismatic cell assembly

Zinc made of zinc particles recycling: the battery on the zinc cylinder stripped and washed a simple analysis of the treatment cut into pieces, to study the high temperature by heating and melting, and then poured directly into the cold water so that the melted liquid as solidified into zinc particles.

Recovery of copper: The copper cover on the battery is rinsed with water to remove the oxide layer on the surface is boiled with sulfuric acid to remove the copper obtained by washing and drying.

Separate the components of the battery, remove the ink rods, clean and dry them, they can be used as electrodes for the second time.

Recovery of manganese dioxide: Wash the filtered water and filter it again. Remove small amounts of carbon and other organic matter with steam. Stir thoroughly for 30 minutes, filter and dry at 100 to 110 degrees Celsius to make manganese dioxide.

Two. International Industrial Specialized Recycling

Heat Treatment

The old batteries are first ground up and subsequently placed in a furnace for heating. As the temperature increases mercury and zinc are gradually evaporated. Among them, iron and manganese become manganese-iron alloy needed for steel making after fusion. Alternatively, the iron is extracted from the batteries and the mixture of metals such as manganese oxide, zinc oxide, copper oxide and nickel oxide is sold directly as metal scrap. However, the heat treatment method is more expensive.

"Wet Processing"

All batteries except lead batteries can be dissolved in sulfuric acid, after which ionic resins are used to extract various metals from the solution, and 95% of the substances in the batteries are extracted. Although the cost of this method is slightly higher, it has a better effect on the recovery of raw materials and is basically pollution-free to the environment.

Vacuum heat treatment method

This method is applicable to nickel-cadmium batteries. Waste batteries are heated in a vacuum and the mercury is first rapidly evaporated and then recovered. The remaining raw materials are then ground, metal iron is extracted with a magnet, and then nickel and manganese are extracted from the remaining powder, which is a lower cost method.