In the use process, the lead metal and paste in the battery can be melted and converted into powder in the rotary furnace, and the polyethylene grid and polypropylene shell of the lead battery shell are processed into particles, which can be reused, and the whole production process will not cause secondary pollution.
This technology not only greatly reduces environmental pollution, but also turns waste into treasure. Its products provide important raw materials for other industries, and truly achieve "killing two birds with one stone". This technology won the gold medal in Brussels 20 1 1 Innovation Research and New Technology Exhibition. This technology is being popularized in Poland.
Extended data:
Hazards of waste batteries:
(1) Zn-Mn battery:
The harm of zinc-manganese dry battery is mainly caused by mercury and electrolyte solutions such as acid and alkali that may enter the environment after being abandoned. Mercury, a heavy metal, can cause central nervous system diseases and is the chief culprit of Minamata disease in Japan.
(2) button cell:
Buckle zinc-silver batteries are widely used in electronic clocks, calculators, hearing AIDS and so on. It is a familiar battery variety. The hazards of such batteries are mainly mercury, cadmium and silver. According to relevant data, a button cell can pollute 600,000 liters of water.
(3) Lithium battery:
Lithium battery refers to the battery containing lithium (including metal lithium, lithium alloy and lithium ion and lithium polymer) in electrochemical system. This class is used for watches, cameras, calculators, standby power supplies, pacemakers, safety alarms, etc. This kind of battery is relatively harmless, and the recovery is mainly to recover the useful component metal lithium.
(4) Alkaline storage battery:
Alkaline batteries include zinc-silver batteries, cadmium-nickel batteries, iron-nickel batteries and nickel-hydrogen batteries. Cadmium-nickel battery is the most widely used battery series at present, and it is also a battery that focuses on environmental pollution. Cadmium is a highly toxic substance, which is carcinogenic, while nickel is also carcinogenic, which has obvious harm to aquatic organisms.
(5) Lead-acid battery:
Lead-acid battery is one of the most widely used batteries in the world. Sales accounted for more than 30% of global battery sales. The annual output of lead-acid batteries in China is nearly 30 million kWh. The pollution of such batteries is mainly caused by heavy metal lead and electrolyte solution. Lead can cause nervous system neurasthenia, numbness of hands and feet, indigestion of digestive system, blood poisoning and kidney injury.
A large number of waste batteries are discarded in the environment, and acid-base electrolyte solution will affect the pH value of soil and water system, making soil and water system acidic or alkaline. After being absorbed by organisms, heavy metals such as mercury and cadmium will enter the human food chain through various channels and gather in the human body, leading to deformation or change of the human body and even death. A grain of button cell can pollute 600,000 liters of water, which is equivalent to a person's lifetime drinking water.
Baidu Encyclopedia-Recycling of Waste Batteries