How to dispose of and utilize used batteries What are the effects of waste batteries on animals and

1. Heat treatment method: the old battery is ground and sent to the furnace for heating, which can extract the mercury emitted by the volatile circle, and the zinc also evaporates when the temperature is higher, and mercury and zinc are precious metals. Iron and manganese are fused to become manganese ferroalloys required for steelmaking.

Iron can also be extracted directly from batteries and metal mixtures such as manganese oxide, zinc oxide, copper oxide and nickel oxide can be used directly as metal scrap**. The disadvantage is that the heat treatment method is more expensive.

2. Wet treatment method:

All types of batteries except lead-acid batteries are dissolved in sulfuric acid, and then each metal is extracted from the solution with the help of ionic resin, and the raw materials obtained in this way are purer than those obtained by the heat treatment method. Wet processing eliminates the need for sorting.

3. Vacuum.

1.Classify. Smash the waste battery, peel off the zinc shell and the bottom iron of the battery, take out the copper cap and graphite rod, and the remaining black matter is a mixture of manganese dioxide and ammonium chloride as the battery cell.

The graphite rod is washed and dried before being used as an electrode.

2.Zinc granules. The stripped zinc shell is washed and placed in a cast iron pot, heated and melted and kept warm for 2 hours, the upper scum is removed, poured out and cooled, and dripped on the iron plate, and the zinc particles are obtained after solidification.

3.Copper sheets. After flattening the copper cap, wash it with hot water, then add a certain amount of 10% sulfuric acid and boil for 30 minutes to remove the surface oxide layer, remove the copper sheet from washing and drying.

4.**Ammonium chloride. Put the black substance into the tank, add 60oC warm water and stir for 1 hour to dissolve all the ammonium chloride in water, static, filter, and wash the filter residue twice to collect the mother liquor; After vacuum distillation of the mother liquor until there is a white crystal film on the surface, the ammonium chloride crystals are cooled and filtered, and the mother liquor is recycled.

5.Manganese dioxide. The filtered filter residue is washed 3 times, filtered, and the filter cake is placed in a pot to evaporate to remove a little carbon and other organic matter, and then put it into the water and stir it fully for 30 minutes, filter, and dry the filter cake at 100-110oC to obtain black manganese dioxide.

Used batteries. Garbage sorting. Dispose of hazardous waste.

Harm to plants:

Plant name Time of onset of symptoms Organs of damage Symptoms of injury.

Sprinkle the golden banyan 14 days Old leaves under the stem Fresh leaves fall one by one.

Fugui bamboo 19 days Old leaves under the stem The tips of the old leaves begin to turn yellow, slowly expand, and die after three to four days.

Evergreen 21 days Old leaves under the stem The edges of the old leaves appear red, slowly spread from the edge to the middle, become soft and droop, and after three days, the leaves die.

Geranium 8 days Old leaves and flowers under the stem The edges turn yellow, spread to the middle, and die after four days. The red of the flowers turns pink and only then falls.

A bunch of red 7 days stems, leaves, flowers and stems become softer, and the support decreases. The flowers fall first, and the leaves soften and fall.

Orchid 18 days Leaves The young leaves are damaged first, the tips of the young leaves first turn yellow, and then slowly spread to the underside of the leaves, become soft, thin, and finally die.

From observations, we know how harmful waste batteries are to plants. Different plants have different responses to the harm of waste batteries, and different plants are the first to be harmed by different organs. Different plants have different limits to the harm of waste batteries.

Plants die and land is wasted!!