Waste batteries contain mercury, cadmium, manganese, lead and other heavy metals. If they are not managed, they will cause serious damage to the ecological environment. When the surface of the waste battery is corroded by sunlight and rain, the heavy metals of batteries will penetrate into the soil and groundwater. If people eat crops growing on polluted land or drink polluted water, these toxic heavy metals (651,329) will slowly deposit in the human body, posing a huge threat to human health. After the waste battery overflows, if it enters the human body, the brain cells will be damaged and the human nervous system will be seriously damaged. Cadmium can damage the liver and kidney, in serious cases, it can make people’s bones deformed. Some waste batteries also contain acid and heavy metal lead. If they were leaked into nature, they will pollute the soil and water, and eventually cause harm to human beings.
The dry batteries were treated by vacuum chlorination roasting and glass curing with rotary vane vacuum pump, including crushing, magnetic separation, vacuum chlorination roasting, cooling, adsorption, etc. In the roasting process, when the waste battery is crushed, a large amount of gas will be produced due to the internal heating of the waste battery. These gases sometimes cause explosions, damage to equipment and serious consequences. Therefore, it is necessary to crush the battery before the vacuum chlorination roasting process.
Rotary Vane Vacuum Pumps are in recycling waste batteries Application:
1. The rotary vane vacuum pump is baked at low temperature. In the heating process of waste dry batteries, water, white wax, ammonium chloride and other substances will be distilled continuously, and organic matters such as paper and paste will be ashed; with the temperature rising, the remaining element zinc in the battery will start to melt and can be recycled.
2. The waste dry batteries which are chlorinated and roasted by rotary vane vacuum pump, and roasted at low temperature, During this period, water, organic matter, ammonium chloride, etc. Metal chloride: low melting point, good volatility, easy to dissolve in water, easy to recover and use, which will greatly save electric energy and reduce the cost of waste dry cell treatment.
Tags: Rotary Vane Vacuum Pump
Edited by Selena Zhang / Shanghai EVP Vacuum technology Co., LTD
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